HomeMy WebLinkAboutCitrus Ave Master Storm Drain Vol 1 1
44
SIERRA ENGINEERING .
CIVIL ENGINEERS
LAND SURVEYORS
3 ,
LAND PLANNERS
DRAINAGE STUDY h,, I 2000 IN(
3 FOR
'; CITRUS AVENUE MASTER STORM DRAIN
+ +
- VOLUME 1 -
+ +
ON CITRUS AVENUE
BETWEEN WEST FONTANA CHANNEL
I AND FOOTHILL BOULEVARD
1 ._ . . .
�Crat ,,, CITY OF FONTANA
cr"�a �+r? Af _ SAN BERNARDINO COUNTY i t 0E4
° � i R.C. . 33820
�t or ,Ir
e�, J.N. 90 -065
.5•>.,.. a D ATE : 5 -01 -91
0
I /Ida
I NAT' OWERS .
RCE 33820
1 .
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25864 BUSINESS CENTER DRIVE, SUITE F
REMANDS, Cif 92374
(714) 799 -8080 • FAX (714) 799 -8070
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TABLE OF CONTENTS
VOLUME 1
PAGES
1. , VICINITY MAP 1
2. INTENSITY AND SOIL GROUP CHARTS 2 - 6
1 3. HYDROLOGY STUDY FOR DRAINAGE AREAS IMPACTING
CITRUS AVENUE STORM DRAIN INCLUDING OVERFLOW
AREA FROM BASELINE AVENUE PER MASTER PLAN.
1 a - RATIONAL METHOD ( 100 YEAR ) 7 - 53
4.. HYDRLOGY STUDY FOR DRAINAGE AREAS IMPACTING
1 CITRUS AVENUE STORM DRAIN WITHOUT OVERFLOW
AREA FROM BASELINE AVENUE.
a - RATIONAL METHOD ( 100 YEAR ) 54 - 101
5. HYDROLOGY STUDY FOR DRAINAGE AREAS IMPACTING
CITRUS AVENUE STORM DRAIN, TO BE USED FOR
1 SIZING CATCH BASINS.
a - RATIONAL METHOD ( 25 YEAR ) 102 - 148
1 6.' UNIT HYDROGRAPH AND BASIN ROUTING ANALYSIS 149 - 192
WITH OVERFLOW FROM BASELINE AVENUE.
Q 100 YEAR FOR 3 HOUR, 6 HOUR AND 24 HOUR.
1 a - SUMMARY TABLE 150
7. UNIT HYDROGRAPH AND BASIN ROUTING ANALYSIS 193 - 235
1 WITHOUT OVERFLOW FROM BASELINE AVENUE.
Q 100 YEAR FOR 3 HOUR, 6 HOUR AND 24 HOUR.
1 a - SUMMARY TABLE 194
1
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1
71
Job No. Date
Sierra Engineering
CIVIL ENGINEERS • LAND SURVEYORS • LAND PLANNERS ."2/7;re2S
DIVISION OF PROJECT 2000, INC
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I
LEGEND � "'
1. _ _ _ _
SOIL GROUP 80UNDARY f....� ..••'�•- •- ••�� ^�
4 �\ =_,� •` SCALE - 148,000
A SOIL GROUP DESIGNATION
• �- � 0 _, ��\ 0 �._._�.- BOURDARY OF INDICATED SOURCE SCALE RED�.lCED BY 1 /2 H Y D R 0 LO G i C SOILS GROUP MAP
r SAN BERNARDYiO COUNTY f �
SAN SERNARDINO COUNTY � L� FOR
HYDROLOGY MANUAL � SOUTHWEST -A AREA
ca c -e c -a - f c -a
INDEX MAP I
_ _ __
HYDROLOGY STUDY
INCLUDE OVERFLOW FROM BASELINE AVENUE
Q 100 YEAR
,�
San Bernardino County Rational Hydrology Program
(Hydrology Manual Date - August 1986)
CivilCADD /Civi1DESIGN Engineering Software, (c) 1990 Version 2.3
Rational Hydrology Study Date: 3/19/91
HYDROLOGY ANALYSIS FOR CITRUS AVENUE STORM DRAIN, Q 100 YEAR
DESIGN Q, INCLUDES OVERFLOW FROM BASELINE, Q 25 -100 = 89.70 CFS
IN THE CITY OF FONTANA COUNTY OF SAN BERNARDINO
' DATA TO BE USED IN RAT002 FILE NAME RAT001 J.N. 90065
* * * * * * * ** Hydrology Study Control Information * * * * * * * * **
Rational hydrology study storm event year is 100.0
10 Year storm 1 hour rainfall = 1.010(In.)
100 Year storm 1 hour rainfall = 1�520(In.)
Computed rainfall intensity:
Storm year = 100.00 1 hour rainfall p = 1.520(In.)
Slope used for rainfall intensity curve b = 0.6000
Soil antecedent moisture condition (AMC) = 3
Process from Point /Station 214.100 to :Point /Station 100.100
* * ** USER DEFINED FLOW INFORMATION AT A POINT * * **
Soil classification AP and SCS values input by user
USER INPUT of soil data for subarea
SCS curve number for soil(AMC 2) _ .32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = ����2 :634(In /Hr) for a 100.0 year storm
User specified values are as� follows:
TC = 24.00 min. Rain intensity = 2.63 (Ii'f /Hr)
Total area = ��- .- 4�- {-Ac.) Total. runoff = �`�� 83.70(CFS)
Process from Point /Station :214.100 to Point /Station 100.100
I * * ** CONFLUENCE OF MINOR STREAMS * * **
i
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 46.400(Ac.)
Runoff from this stream = 89.700(CFS)
Time of concentration = 24.00 min.
iii Rainfall intensity 2.634(In /Hr)
�' Area averaged loss rate (Fm) = 0.3926(In /Hr)
� Area averaged Pervious ratio (Ap) = 0.5000
i
al
i Process from Point /Station 100.000 to Point /Station 100.100
* * ** INITIAL AREA EVALUATION * * ** -
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
i Decimal fraction soil group C = 0.000
� Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
�j
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
Initial subarea data:
� Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1396.700(Ft.)
Bottom (of initial area) elevation = 1387.000(Ft.)
Difference in elevation = 9.700(Ft.)
Slope = 0.00970 s(�)= 0.97
TC = k(0.304) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 12.176 min.
Rainfall intensity = 3.958(In /Hr) for a 100.0 year storm
'"" Effective runoff coefficient used for area (Q =KCIA) is C = 0.882
Subarea runoff = 17.456(CFS)
Total initial stream area = 5.000(Ac.)
� Pervious area fraction = 0.100
'Initial area Fm value = 0.079(In /Hr)
+�t +++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 100.000 to Point /Station 100.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
'� Along Main Stream number: 1 in normal stream number 2
Stream flow area = 5.000(Ac.)
Runoff from this stream = 17.456(CFS)
,,� Time of concentration = 12.18 min.
Rainfall intensity = 3.958(In /Hr)
Area averaged loss rate (Fm) = 0.0785(In /Hr)
Area averaged Pervious ratio (Ap) = 0.1000
�"""! Summary of stream data:
�i
Stream Flow rate TC Rainfall Intensity
� 'No. (CFS) (min) (In /Hr)
1 89.700 24.00 2.634
+�► 2 17.456 12.18 3.958
Qmax(1) _
1.000 * 1.000 * 89.700) +
0.659 * 1.000 * 17.456) + = 101.199
Qmax(2) _
1.591 * 0.507 * 89.700) +
1.000 * 1.000 * 17.456) + = 89.839
Total of 2 streams to confluence:
Flow rates before confluence point:
89.700 17.456
Maximum flow rates at confluence using above data:
101.199 89.839
Area of streams before confluence:
46.400 5.000
Effective area values after confluence:
51.400 28.541
Results of confluence:
Total flow rate = 101.199(CFS)
Time of concentration = 24.000 min.
Effective stream area after confluence = 51.400(Ac.)
Study area average Pervious fraction(Ap) = 0.461
Study area average soil loss rate(Fm) = 0.362(In /Hr)
Study area total (this main stream) = 51.40(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 100.100 to Point /Station 101.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
l�
- ._. .. .. .. - .. ..,. ,...., ,. �,t,
Top of street segment elevation = 1387.000(Ft.)
End of street segment elevation = 1381.500(Ft.)
Length of street segment = 330.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [2) side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 106.122(CFS)
Depth of flow = 0.772(Ft.)
Average velocity = 6.004(Ft /s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 5.25(Ft.)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 28.079(Ft.)
"R Flow velocity = 6.00(Ft /s)
Travel time = 0.92 min. TC = 24.92 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 2.575(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.877
Subarea runoff = 11.015(CFS) for 5.000(Ac.)
Total runoff = 112.214(CFS) Total area = 56.40(Ac.)
Area averaged Fm value = 0.365(In /Hr)
Street flow at end of street = 112.214(CFS)
Half street flow at end of street = 56.107(CFS)
Depth of flow = 0.784(Ft.)
Average velocity = 6.053(Ft /s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 5.88(Ft.)
Flow width (from curb towards crown)= 28.716(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 106.000 to Point /Station 101.100
* * ** SUBAREA FLOW ADDITION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Time of concentration = 24.92 min.
Rainfall intensity = 2.575(In /Hr) for a 100.0 year storm
/J
Effective runoff
rational method)
Subarea runoff =
Total runoff =
Area averaged Fm
coefficient used for area,(total area with modified
(Q =KCIA) is C = 0.869
8.841(CFS) for 4.500(Ac.)
121.055(CFS) Total area = 60.90(Ac.)
value = 0.367(In /Hr)
+++++++++++++++++++++++++++++++++++++ ++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 101.100 to Point /Station 102.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
di Top of street segment elevation = 1381.500(Ft.)
End of street segment elevation = 1378.500(Ft.)
+.�► Length of street segment = 200.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter.to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [2] side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
'r Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
�. Estimated mean flow rate at midpoint of street = 124.037(CFS)
Depth of flow = 0.819(Ft.)
+�► Average velocity = 5.880(Ft /s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 7.64(Ft.)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 30.474(Ft.)
Flow velocity = 5.88(Ft /s)
Travel time = 0.57 min. TC = 25.48 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 2.541(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.864
Subarea runoff = 3.908(CFS) for 3.000(Ac.)
Total runoff = 124.963(CFS) Total area = 63.90(Ac.)
Area averaged Fm value = 0.368(In /Hr)
Street flow at end of street = 124.963(CFS)
Half street flow at end of street = 62.481(CFS)
Depth of flow = 0.821(Ft.)
Average velocity = 5.887(Ft/s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 7.73(Ft.)
Flow width (from curb towards crown)= 30.561(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 102.100 to Point /Station 103.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
�tl
eel
Fl
0
p
J
Top of street segment elevation = 1378.500(Ft.)
End of street segment elevation = 1370.500(Ft.)
Length of street segment = 350.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on (2] side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break,= 0.0150
Manning's N from grade break to crown— 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.791(Ft.)
Average velocity = 7.119(Ft /s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property =
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 29.051(Ft.)
Flow velocity = 7.12(Ft /s)
Travel time = 0.82 min. TC = 26.30 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
135.327(CFS)
6.22(Ft.)
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 2.493(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.849
Subarea runoff = 17.290(CFS) for 10.600(Ac.)
Total runoff = 142.253(CFS) Total area = 74.50(Ac.)
Area averaged Fm value = 0.371(In /Hr)
Street flow at end of street = 142.253(CFS)
Half street flow at end of street = 71.127(CFS)
Depth of flow = 0.802(Ft.)
Average velocity = 7.174(Ft/s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 6.79(Ft.)
Flow width (from curb towards crown)= 29.624(Ft.)
+++++++++++++++++++++++++++++++++++++ ++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 103.100 to Point /Station 104.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1370.500(Ft.)
End of street segment elevation = 1352.000(Ft.)
Length of street segment = 960.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on (2] side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
/2
0
FI
t�
Fl
�
di
Area averaged Fm value = 0.375(In /Hr)
Street flow at end of street = 160.853(CFS)
Half street flow at end of street = 80.426(CFS)
Depth of flow = 0.884(Ft.)
Average velocity = 6.669(Ft/s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 10.86(Ft.)
Flow width (from curb towards crown)= 31.864(Ft.)
rational method)(Q =KCIA) is C = 0.831
Subarea runoff = 18.600(CFS) for 15.300(Ac.)
Total runoff = 160.853(CFS) Total area = 89.80(Ac.)
156.860(CFS)
10.57(Ft.)
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity 2.365(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (total area with modified
Gutter width = 2.000(Ft.)
Gutter hike from flowline = 2.000(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.878(Ft.)
Average velocity = 6.639(Ft/s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property =
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 31.572(Ft.)
Flow velocity = 6.64(Ft /s)
Travel time = 2.41 min. TC = 28.71 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 107.000 to Point /Station 104.100
* * ** SUBAREA FLOW ADDITION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000,
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Time of concentration = 28.71 min.
Rainfall intensity = 2.365(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.828
Subarea runoff = 6.037(CFS) for 3.400(Ac.)
Total runoff = 166.890(CFS) Total area = 93.20(Ac.)
Area averaged Fm value = 0.376(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 104.100 to Point /Station 105.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1352.000(Ft.)
/J
End of street segment elevation = 1341.000(Ft.)
Length of street segment = 640.000(Ft.)
Height of curb above gutter flowline 8.0(In.)
_
Width of half street (curb to crown) 32.000(Ft.)
Distance from crown to crossfall grade break
Slope from gutter to grade break (v /hz) _ 0.020
Slope from grade break to crown (v /hz) -
Street flow is on [2] side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 166.890(CFS)
Depth of flow = 0.871(Ft.)
Average velocity = 6. 599 (Ft /s)
Warning: depth of flow exceeds top of curb
Note: depth of flow exceeds top of street crown.
Distance that curb overflow reaches into property = 10.23(Ft.)
Streetflow hydraulics at midpoint of street travel:
+ Halfstreet flow width = 32.000(Ft.)
Flow velocity = 6.60(Ft /s)
•� Travel time = 1.62 min. TC = 30.33 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.3 Hr)
storm
Rainfall intensity = 2.289(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
r ational method)(Q =KCIA) is C = 0.826
'Subar runo� ff - -- = -- - _0.0 -10 CYS €er - - -- 8:00 c.
Total run = ( ) 93.20 Ac.
166.890 CFS Total area = (
Area averaged Fm value = 0.376(In /Hr
Street flow at end of street = 166.890(CF5)
Half street flow at end of street = 83.445(CFS)
Depth of flow = 0.871(Ft.)
Average velocity = 6.599(Ft/s)
Warning: depth of flow exceeds top of curb
Note: depth of flow exceeds top of street crown.
Distance that curb overflow reaches into property = 10.23(Ft.)
Flow width (from curb towards crown)= 32.000(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station * * ** 105.000 to Point /Station 105.100
* * ** SUBAREA FLOW ADDITION
RESIDENTIAL( - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Time of concentration = 30.33 min.
'III
Rainfall intensity = 2.289(In /Hr) for a 100.0 year storm
0
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.813
Subarea runoff = 26.355(CFS) for 19.200(Ac.)
Total runoff = 193.244(CFS) Total area = 112.40(AC.)
Area averaged Fm value = 0.379(In /Hr)
++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 108.000 to Point /Station 105.100
* * ** SUBAREA FLOW ADDITION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000.
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Time of concentration = 30.33 min.
Rainfall intensity = 2.289(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.812
Subarea runoff = 2. for 1.500(Ac.)
ew Total runoff = X 95.804 CFS) Total area = 113.90(Ac.)
Area averaged Fm value 0.379(In /Hr)
+ + + + + + + + + + + + + + + + + + + + + + + + ++ - F + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station \ 105.100 to Point /Station 109.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevate n = 1341.00(Ft.)
Downstream point /station elevat = 1329.70(Ft.)
Pipe length = 650.00(Ft.) M nning's N = 0.013
No. of pipes = 1 Required pipe f ow = 195.804(CFS)
Nearest_computed-pipe diameter =��� 48.00 In.
calculated endi ,dui pipe fl oes — f 9 - 5 - . - 804 (CFS)
Norma epth in pipe = 40.97
Flow top width inside pipe = 33.94(In.)
Critical depth could not be calculated.
Pipe flow velocity = 17.13(Ft/s)
Travel time through pipe = 0.63 min.
Time of concentration (TC) = 30.96 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 109.000 to Point /Station 109.100
* * ** SUBAREA FLOW ADDITION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Time of concentration = 30.96 min.
Rainfall intensity = 2 e dor area,(total n/ )00 a �ea e area modified
Effective runoff coefficient used
rational method)(Q =KCIA) is C = 0.803
Subarea runoff = 23.342(CFS) for 15.600(Ac.)
Total runoff = 219.147(CFS) Total area = 129.50(Ac.)
/S
Area averaged Fm value = 0.380(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 109.100 to Point /Station 110.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1329.70(Ft.)
Downstream point /station elevation = 1313.80(Ft.)
Pipe length = 920.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 219.147(CFS)
Nearest computed pipe diameter = 51.00(In.)
Calculated individual pipe flow = 219.147(CFS)
Normal flow depth in pipe = 41.25(In.)
Flow top width inside pipe = 40.11(In.)
Critical depth could not be calculated.
Pipe flow velocity = 17.84(Ft/s)
Travel time through pipe = 0.86 min.
Time of concentration (TC) = 31.82 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 110.000 to Point /Station 110.100
* * ** SUBAREA FLOW ADDITION * * **
RESIDENTIAL(
Decimal fracti on soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Time of concentration = 31.82 min.
Rainfall intensity = 2.224(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.795
Subarea runoff = 19.769(CFS) for 14.600(Ac.)
Total runoff = 238.916(CFS) Total area = 144.10(Ac.)
Area averaged Fm value = 0.382(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 110.100 to Point /Station 111.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1313.80(Ft.)
Downstream point /station elevation = 1307.70(Ft.)
Pipe length = 420.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 238.916(CFS)
Nearest computed pipe diameter = 54.00(In.)
Calculated individual pipe flow = 238.916(CFS)
Normal flow depth in pipe = 44.63(In.)
Flow top width inside pipe = 40.91(In.)
Critical Depth = 50.84(In.)
Pipe flow velocity = 16.98(Ft/s)
Travel time through pipe = 0.41 min.
Time of concentration (TC) = 32.23.min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 111.000 to Point /Station 111.100
* * ** SUBAREA FLOW ADDITION * * **
Fl
H
L '
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Time of concentration = 32.23 min.
Rainfall intensity = 2.207(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.784
Subarea runoff = 53.786(CFS) for 34.300(Ac.)
Total runoff =. 292.702(CFS) Total area = 178.40(Ac.)
Area averaged Fm value = 0.384(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 111.100 to Point /Station 112.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1307.70(Ft.)
Downstream point /station elevation = 1297.70(Ft.)
Pipe length = 650.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 292.702(CFS)
Nearest computed pipe diameter = 57.00(In.)
Calculated individual pipe flow = 292.702(CFS)
Normal flow depth in pipe = 48.94(In.)
Flow top width inside pipe = 39.73(In.)
Critical depth could not be calculated.
Pipe flow velocity = 18.06(Ft /s)
'gavel time through pipe = 0.60 min.
Time of concentration (TC) = 32.83 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 112.000 to Point /Station 112.100
* * ** SUBAREA FLOW ADDITION * * **
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
Time of concentration = 32.83 min.
Rainfall intensity = 2.182(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.789
Subarea runoff = 35.678(CFS) for 20.900(Ac.)
Total runoff = 328.380(CFS) Total area = 199.30(Ac.)
Area averaged Fm value = 0.352(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 112.000 to Point /Station 112.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 199.300(Ac.)
Runoff from this stream = 328.380(CFS)
Time of concentration = 32.83 min.
/7
Rainfall intensity = 2.182(In /Hr)
Area averaged loss rate (Fm) = 0.3518(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4480
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 105.100 to Point /Station 113.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance 1000.000(Ft.)
Top (of initial area) elevation = 1341.000(Ft.)
Bottom (of initial area) elevation = 1323.000(Ft.)
Difference in elevation = 18.000(Ft.)
Slope = 0.01800 s(%)= 1.80
TC = k(0.389) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 13.769 min.
Rainfall intensity = 3.676(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.804
., Subarea runoff = 6.797(CFS)
Total initial stream area = 2.300(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 113.100 to Point /Station 110.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1323.000(Ft.)
End of street segment elevation = 1313.800(Ft.)
Length of street segment = 570.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 8.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 8.422(CFS)
Depth of flow = 0.424(Ft.)
Average velocity = 4.633(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 10.680(Ft.)
Flow velocity = 4.63(Ft /s)
Travel time = 2.05 min. TC = 15.82 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
/, IF
rational method)(Q =KCIA) is C = 0.796
Subarea runoff = 2.352(CFS) for 1.100(Ac.)
Total runoff = 9.149(CFS) Total area = 3.40(Ac.)
Area averaged Fm value = 0.393(In /Hr)
Street flow at end of street = 9.149(CFS)
Half street flow at end of street = 9.149(CFS)
Depth of flow = 0.435(Ft.)
Average velocity = 4.711(Ft /s)
Flow width (from curb towards crown)= 11.244(Ft.)
I +++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 110.100 to Point /Station 112.100
9-4 * * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1313.800(Ft.)
End of street segment elevation = 1297.700(Ft.)
' Length of street segment = 1070.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
ail Slope from grade break to crown (v /hz) = 0.020
Street flow is on (1] side(s) of the street
!� Distance from curb to property line = 8.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
®w Gutter hike from flowline = 1.320(In.)
r Manning's N in gutter = 0.0130
�i Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 12.109(CFS)
i� Depth of flow = 0.481(Ft.)
Average velocity = 4.821(Ft /s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 13.542(Ft.)
Flow velocity = 4.82(Ft /s)
Travel time = 3.70 min. TC = 19.52 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000.
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 2.982(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.782
Subarea runoff = 3.901(CFS) for 2.200(Ac.)
Total runoff = 13.049(CFS) Total area = 5.60(Ac.)
Area averaged Fm value = 0.393(In /Hr)
Street flow at end of street = 13.049(CFS)
Half street flow at end of street = 13.049(CFS)
Depth of flow = 0.492(Ft.)
Average velocity = 4.884(Ft/s)
�y
Decimal
fraction soil
group C = 0.000
Decimal
fraction soil
group D = 0.000
SCS curve
number for
soil(AMC 2) = 32.00
Adjusted
SCS curve number
for AMC 3 = 52.00
Pervious
ratio(Ap) =
0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall
intensity =
3.382(In /Hr) for a 100.0 year storm
Effective
runoff coefficient
used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.796
Subarea runoff = 2.352(CFS) for 1.100(Ac.)
Total runoff = 9.149(CFS) Total area = 3.40(Ac.)
Area averaged Fm value = 0.393(In /Hr)
Street flow at end of street = 9.149(CFS)
Half street flow at end of street = 9.149(CFS)
Depth of flow = 0.435(Ft.)
Average velocity = 4.711(Ft /s)
Flow width (from curb towards crown)= 11.244(Ft.)
I +++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 110.100 to Point /Station 112.100
9-4 * * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1313.800(Ft.)
End of street segment elevation = 1297.700(Ft.)
' Length of street segment = 1070.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
ail Slope from grade break to crown (v /hz) = 0.020
Street flow is on (1] side(s) of the street
!� Distance from curb to property line = 8.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
®w Gutter hike from flowline = 1.320(In.)
r Manning's N in gutter = 0.0130
�i Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 12.109(CFS)
i� Depth of flow = 0.481(Ft.)
Average velocity = 4.821(Ft /s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 13.542(Ft.)
Flow velocity = 4.82(Ft /s)
Travel time = 3.70 min. TC = 19.52 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000.
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 2.982(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.782
Subarea runoff = 3.901(CFS) for 2.200(Ac.)
Total runoff = 13.049(CFS) Total area = 5.60(Ac.)
Area averaged Fm value = 0.393(In /Hr)
Street flow at end of street = 13.049(CFS)
Half street flow at end of street = 13.049(CFS)
Depth of flow = 0.492(Ft.)
Average velocity = 4.884(Ft/s)
�y
Flow width (from curb towards crown)= 14.122(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 1 * 0 * * 00 to Point /Station 112.100
* * ** CONFLUENCE OF MINOR STREAMS
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 5.600(Ac.)
Runoff from this stream = 13.049(CFS)
Time of concentration = 19.52 min.
kW Rainfall intensity = 2.982(In /Hr)
Area averaged loss rate (Fm) = 0.3926(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
tai
Stream Flow rate TC Rainfall Intensity
we No. (CFS) (min) (In /Hr)
1 328.380 32.83 2.182
2 13.049 19.52 2.982
Qmax (1) _
1.000 * 1.000 * 328.380) +
0.691 * 1.000 * 13.049) + = 337.401
Qmax(2) _
1.437 * 0.594 * 328.380) +
1.000 * 1.000 * 13.049) + = 293.491
Total of 2 streams to confluence:
Flow rates before confluence point:
328.380 13.049
Maximum flow rates at confluence using above data:
337.401 293.491
Area of streams before confluence:
199.300 5.600
Effective area values after confluence:
204.900 124.080
Results of confluence:
Total flow rate = 337.401(CFS)
Time of concentration = 32.832 min.
Effective stream area after confluence = 204.900(Ac.)
Study area average Pervious fraction(Ap) = 0.449
Hr In
Study area average soil loss rate(Fm) _ 0.353 ( /
Study area total (this main stream) = 204.90(Ac.)
End of computations, total study area = 204.90 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Note: These figures do not consider reduced effective area
effects caused by confluences in the rational equation.
Area averaged pervious area fraction(Ap) = 0.449
Area averaged SCS curve number = 32.0
San Bernardino County Rational Hydrology Program
(Hydrology Manual Date - August 1986)
Civi1CADD /Civi1DESIGN Engineering Software, (c) 1990 Version 2.3
Rational Hydrology Study Date: 3/19/91
------------------------------------------------------
HYDROLOGY ANALYSIS FOR CITRUS AVE STORM DRAIN
Q 100 YEAR
IN THE CITY OF FONTANA COUNTY OF SAN BERNARDINO
rrri DATA TO BE USED IN RAT003 FILE NAME RAT002 J.N. 90065 ------------------
-
,�,� ********* Hydrology Study Control Information **********
___ _________ -----------------------------------
Rational hydrology study storm event year is 100.0
10 Year storm 1 hour rainfall = 1.010(In.)
100 Year storm 1 hour rainfall = 1.520(In.)
Computed rainfall intensity: 520 In.
Storm year = 100.00 1 hour rainfall p = 1, ( )
Slope used for rainfall intensity curve b = 0.6000
Soil antecedent moisture condition (AMC) = 3
P'.
Fl
H-
t
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 112.100 to Point/Station 112.100
* * ** USER DEFINED FLOW INFORMATION AT A POINT
Soil classification AP and SCS values input by user
USER INPUT of soil data for subarea
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(AP) = 0.4490 Max loss rate(Fm)= 0.353(In /Hr)
Rainfall intensity = 2.183(In /Hr) for a 100.0 year storm
User specified values are as follows: Hr In
TC = 32.83 min. Rain intensity = 2.18 ( / )
Total area = 204.90(Ac.) Total runoff = 337.40(CFS)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 112.100 to Point/Stati 125.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size)
Upstream point /station elevation = 1297.70(Ft.)
Downstream point /station elevation = 1291.50(Ft.)
Pipe length 340.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 337.400(CFS)
Nearest computed pipe diameter = 60.00(In.)
Calculated individual pipe flow = 337.400(CFS)
Normal flow depth in pipe = 47.16(In.)
Flow top width inside pipe = 49.22(In.)
Critical depth could not be calculated.
Pipe flow velocity = 20.40(Ft /s)
Travel time through pipe = 0.28 min.
Time of concentration (TC) = 33.11 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 125.000 to Point /Station 125.100
* * ** SUBAREA FLOW ADDITION * * **
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000.
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
Time of concentration = 33.11 min.
Rainfall intensity = 2.172(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.897
Subarea runoff = 7.470(CFS) for 5.000(Ac.)
Total runoff = 344.870(CFS) Total area = 209.90(Ac.)
Area averaged Fm value = 0.346(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 125.100 to Point /Station 116.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = ley L.)
Downstream point /station elevation = .50(Ft ) %`
Pipe length = 240.00(Ft.) Manning s N = .013 '
No. of pipes = 1 Required pipe flow = 344.870(CFS)
Nearest computed pipe diameter = 63.00(In.)
Calculated individual pipe flow = 344.870(CFS)
Normal flow depth in pipe = 54.19(In.)
Flow top width inside pipe = 43.70(In.)
Critical Depth = 59.09(In.)
Pipe flow velocity = 17.40(Ft /s)
Travel time through pipe = 0.23 min.
Time of concentration (TC) = 33.34 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 125.100 to Point /Station 116.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 209.900(Ac.)
Runoff from this stream = 344.870(CFS)
Time of concentration = 33.34 min.
Rainfall intensity = 2.163(In /Hr)
Area averaged loss rate (Fm) = 0.3460(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4407
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 114.000 to Point /Station 114.100
* * ** INITIAL AREA EVALUATION * * **
COMMERCIAL subarea type
Decimal fraction soil group A
= 1.000
Decimal fraction soil group B
= 0.000
Decimal fraction soil group C
= 0.000
Decimal fraction soil group D
= 0.000
SCS curve number for soil(AMC
2) = 32.00
Adjusted SCS curve number for
Pervious ratio(Ap) = 0.1000
AMC 3 = 52.00
Max loss rate(Fm)= 0.079(In /Hr)
Initial subarea data:
Initial area flow distance =
1000.000(Ft.)
Top (of initial area) elevation
= 1304.500(Ft.)
Bottom (of initial area) elevation
= 1295.400(Ft.)
Difference in elevation =
9.100(Ft.)
Slope = 0.00910 s( %)=
0.91
n,�
TC = k(0.304) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 12.333 min.
Rainfall intensity = 3.927(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.882
Subarea runoff = 19.052(CFS) . Ac
Total initial stream area = 5.500 ( )
Pervious area fraction = 0.100
Initial area Fm value = 0.079(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
urr Process from Point /Station 114.100 to Point/Station* 115.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION
Top of street segment elevation = . 1295.400(Ft.)
End of street segment elevation = 1293.000(Ft.)
Length of street segment = 459.000(Ft.)
Height of curb above gutter flowline 8.0(In.)
Width of half street (curb to ,crown) = 18.000(Ft.)
Distance from crown to crossfa'11 grade break = 10.000(Ft.)
Slope from gutter to grade break _(v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
ilrl Street flow is on [2] side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Aw Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 24.074(CFS)
Depth of flow = 0.566(Ft.)
Average velocity = 3.129(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 17.802(Ft.)
Flow velocity = 3.13(Ft /s)
Travel time = 2.40 min. TC = 14.73 min.
Adding area flow to street
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
Rainfall intensity = 3.530(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.880
Subarea runoff = 7.044(CFS) for 2.9,00(Ac.)
Total runoff = 26.096(CFS) Total area = 8.40(Ac.)
Area averaged Fm value = 0.079(In /Hr)
Street flow at end of street = 26.096(CFS)
Half street flow at end of street = 13.048(CFS)
Depth of flow = 0.580(Ft.)
Average velocity = 3.184(Ft/s)
Note: depth of flow exceeds top of street crown.
Flow width (from curb towards crown)= 18.000(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
* * * *eSTREETmFLOW Point/Station
TRAVELTIME + Point/Station 116.100
* * **
Fl
vl
OR
0
E
Top of street segment elevation = 1293.000(Ft.)
End of street segment elevation = 1286.400(Ft.)
Length of street segment = 400.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
wn to crossfall grade break = 24.000(Ft.)
Total runo
Area averaged Fm value = 0.079(In /Hr)
Street flow at end of street = 55.486(CFS)
Half street flow at end of street = 55.486(CFS)
Depth of flow = 0.783(Ft.)
Average velocity = 6.017(Ft /s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 5.81(Ft.)
Flow width (from curb towards crown)= 28.646(Ft.)
42.095(CFS)
2.62(Ft.)
Adjusted SCS curve
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
Rainfall intensity = 3.375(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.879
Subarea runoff = 29.390(CFS) for 10.300(Ac.)
ff = 55 486(CFS) Total area = 18.70(Ac.)
Distance from cro
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = ' 0.719(Ft.)
Average velocity = 5.826(Ft/s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property =
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 25.455(Ft.)
Flow velocity = 5.83(Ft /s)
Travel time = 1.14 min. TC = 15.87 min.
Adding area flow to street
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
5CS curve number for soil(AMC 2) = 32.00
number for AMC 3 = 52.00
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 115.100 to Point /Station 116.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 18.700(Ac.)
Runoff from this stream = 55.486(CFS)
Time of concentration = 15.87 min.
Rainfall intensity = 3.375(In /Hr)
Area averaged loss rate (Fm) = 0.0785(In /Hr)
Area averaged Pervious ratio (Ap) = 0.1000
Summary of stream data:
Stream Flow rate TC
No. (CFS) (min)
Rainfall Intensity
(In /Hr)
4
0
1 344.870 33.34 2.163
2 55.486 15.87 3.375
Qmax (1) _
1.000 * 1.000 * 344.870) +
0.632 * 1.000 * 55.486) + = 379.945
Qmax(2) _
1.668 * 0.476 * 344.870) +
OR 1.000 * 1.000 * 55.486) + = 329.331
Total of 2 streams to confluence:
Flow rates before confluence point:
344.870 55.486
Maximum flow rates at confluence using above data:
379.945 329.331
Area of streams before confluence:
209.900 18.700
Effective area values after confluence:
228.600 118.646
Results of confluence:
Total flow rate = 379.945(CFS)
Time of concentration = 33.338 min.
Effective stream area after confluence = 228.600(Ac.)
Study area average Pervious fraction(Ap) = 0.413
Study area average soil loss rate(Fm) = 0.324(In /Hr)
Study area total (this main stream) = 228.60(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 126.000 to Point /Station 116.100
* * ** SUBAREA FLOW ADDITION * * **
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000.
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
Time of concentration = 33.34 min.
Rainfall intensity = 2.163(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.887
Subarea runoff = 7.679(CFS) for 5.000(Ac.)
Total runoff = 387.623(CFS) Total area = 233.60(Ac.)
Area averaged Fm value = 0.319(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 116.100 to Point /Station 118.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 88.5 (Ft.)
Downstream point /station elevation = 3.50(Ft.)
Pipe length = 230.00(Ft.) Manning's N = 0.'013
No. of pipes = 1 Required pipe flow = 387.623(CFS)
Nearest computed pipe diameter = 60.00(In.)
Calculated individual pipe flow = 387.623(CFS)
Normal flow depth in pipe = 49.69(In.)
Flow top width inside pipe = 45.27(In.)
Critical depth could not be calculated.
Pipe flow velocity = 22.29(Ft/s)
,5-
Travel time through pipe = 0.17 min.
Time of concentration (TC) = 33.51 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 116.100 to Point /Station 118.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 233.600(Ac.)
Runoff from this stream = 387.623(CFS)
' Time of concentration = 33.51 min.
Rainfall intensity = 2.156(In /Hr)
Area averaged loss rate (Fm) = 0.3189(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4061
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 117.000 to Point /Station 117.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1294.000(Ft.)
Bottom (of initial area) elevation = 1285.300(Ft.)
Difference in elevation = 8.700(Ft.)
Slope = 0.00870 s( %)= 0.87
TC = k(0.389) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 15.924 min.
Rainfall intensity = 3.369(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.795
Subarea runoff = 17.680(CFS)
Total initial stream area = 6.600(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 117.100 to Point /Station 118.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
{
Top of street segment elevation = 1285.300(Ft.)
End of street segment elevation = 1283.500(Ft.)
Length of street segment = 600.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [2] side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
1
OR
r
D
Effective runoff coefficien use ,
rational method)(Q =KCIA) is C = 0.780
Subarea runoff = 9.016(CFS) for 5.000(Ac.)
Total runoff = 26.696(CFS) Total area = 11.60(Ac.)
Area averaged Fm value = 0.393(In /Hr)
Street flow at end of street = 26.696(CFS)
Half street flow at end of street = 13.348(CFS)
Depth of flow = 0.638(Ft.)
Average velocity = 2.600(Ft /s)
Note: depth of flow exceeds top of street crown.
Flow width (from curb towards crown)= 18.000(Ft.)
24.377(CFS)
Adjusted SCS curve nu er
Pervious ratio(Ap) = 0.5000 Max loss rate(Floo storm
0.3 storm r)
Rainfall intensity'= 2.950(In /Hr) for a 100.0 year s
t d for area (total area with modified
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.620(Ft.)
Average velocity = 2.532(Ft/s)
Note: depth of flow exceeds top of street crown.
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 18.000(Ft.)
Flow velocity = 2.53(Ft /s)
Travel time = 3.95 min. TC = 19.87 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
mb for AMC 3 = 52.00
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 1** * *00 to Point /Station 118.100
* * ** CONFLUENCE OF MINOR STREAMS
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 11.600(Ac.)
Runoff from this stream = 26.696(CFS)
Time of concentration = 19.87 min.
Rainfall intensity = 2.950(In/or) In Hr
Area averaged loss rate (Fm) _ / )
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Area of streams before confluence:
Stream Flow rate TC Rainfall Intensity
No.
(CFS) (min) (In /Hr)
1 387.623 33.51 2.156
2 26.696 19.87 2.950
Qmax(1) _
1.000 * 1.000 * 387.623) +
0.690 * 1.000 * 26.696) + = 406.033
Qmax(2) _
1.432 * 0.593 * 387.623) +
1.000 * 1.000 * 26.696) + = 355.908
Total of 2 streams to confluence:
Flow rates before confluence point:
387.623 26.696
Maximum flow rates at confluence using above data:
406.033 355.908
,`7
233.600 11.600
Effective area values after confluence:
245.200 150.140
Results of confluence:
Total flow rate = 406.033(CFS)
Time of concentration = 33.510 min.
Effective stream area after confluence = 245.200(Ac.)
Study area average Pervious fraction(Ap) = 0.411
Study area average soil loss rate(Fm) = 0.322(In /Hr)
Study area total (this main stream) _ 245.20(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 118.100 to Point /Station 120.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1283.50(Ft.)
Downstream point /station elevation = 1276.50(Ft.)
Pipe length = 346.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 406.033(CFS)
Nearest computed pipe diameter = 63.00(In.)
Calculated individual pipe flow = 406.033(CFS)
Normal flow depth in pipe = 49.59(In.)
Flow top width inside pipe = 51.57(In.)
Critical depth could not be calculated.
Pipe flow velocity = 22.20(Ft /s)
Travel time through pipe = 0.26 mina
s., Time of concentration (TC) = 33.77 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 118.100 to Point /Station 120.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 245.200(Ac.)
Runoff from this stream = 406.033(CFS)
Time of concentration = 33.77 min.
Rainfall intensity = 2.146(In /Hr)
Area averaged loss rate (Fm) = 0.3224(In /Hr
Area averaged Pervious ratio (Ap) = 0.4106
Process from Point /Station 119.000 to Point /Station 119.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1287.000(Ft.)
Bottom (of initial area) elevation = 1280.000(Ft.)
Difference in elevation = 7.000(Ft.)
Slope = 0.00700 s(%)= 0.70
TC = k(0.389) *[(length ^3) /(elevation change)] ^0:2
Initial area time of concentration = 16.631 min.
Rainfall intensity = 3.282(In /Hr) for a 100.0 year storm
� ly
Effective runoff coefficient used for area (Q =KCIA) is C = 0.792
Subarea runoff = 13.004(CFS)
Total initial stream area = 5.000(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 119.100 to Point /Station 120.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1280.000(Ft.)
End of street segment elevation = 1276.500(Ft.)
Length of street segment = 600.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on (2] side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.522(Ft.)
Average velocity = 3.136(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 15.596(Ft.)
Flow velocity = 3.14(Ft /s)
Travel time = 3.19 min. TC = 19.82 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Ad'usted SCS curve number for AMC 3 = 52.00
Area averaged Fm
Street flow at el
Half street flow
Depth of flow =
Average velocity
Flow width (from
19.506(CFS)
7
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 2.954(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.780
Subarea runoff = 10.053(CFS) for 5.000(Ac.)
Total runoff = 23.057(CFS) Total, area = 10.00(Ac.)
value = 0.393(In /Hr)
ad of street = 23.057(CFS)
at end of street = 11.528(CFS)
0.550(Ft.)
3.225(Ft/s)
curb towards crown)= 17.022(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 119.100 to Point /Station 120.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
t
J
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 10.000(Ac.)
Runoff from this stream = 23.057(CFS)
Time of concentration = 19.82 min.
n
a' 7
vi
H
f
J
0
Rainfall intensity =
Area averaged loss rate
Area averaged Pervious
Summary of stream data:
2.954(In /Hr)
(Fm) = 0.3926(In /Hr)
ratio (Ap) = 0.5000
Stream
Flow rate
TC
Rainfall Intensity
No.
(CFS)
(min)
(In /Hr)
1
406.033
33.77
2.146
2
23.057
19.82
2.954
Qmax(1)
_
255.200 153.913
1.000 *
1.000 *
406.033) +
0.684 *
1.000 *
23.057) + = 421.813
Qmax(2)
1.443 * 0.587 * 406.033)
+
1.000 * 1.000 * 23.057)
+ = 367.017
Total of 2 streams to confluence:
Flow rates before confluence point:
406.033 23.057
Maximum flow rates at confluence using above data:
421.813 367.017
Area of streams before confluence:
245.200 10.000
Effective area values after confluence:
255.200 153.913
Results of confluence:
Total flow rate = 421.813(CFS)
Time of concentration = 33.769 min.
Effective stream area after confluence =
255.200(Ac.)
Study area average Pervious fraction(Ap)
= 0.414
Study area average soil loss rate(Fm) =
0.325(In /Hr)
Study area total (this main stream) =
255.20(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 120.100 to Point /Station 121.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1276.50(Ft.)
Downstream point /station elevation = 1270.50(Ft.)
Pipe length = 400.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 421.813(CFS)
Nearest computed pipe diameter = 66.00(In.)
Calculated individual pipe flow = 421.813(CFS)
Normal flow depth in pipe = 55.69(In.)
Flow top width inside pipe = 47.93(In.)
Critical depth could not be calculated.
Pipe flow velocity = 19.70(Ft /s)
Travel time through pipe = 0.34 min.
Time of concentration (TC) = 34.11 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 120.100 to Point /Station 121.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 255.200(Ac.)
Runoff from this stream = 421.813(CFS)
Time of concentration = 34.11 min.
Rainfall intensity = 2.133(In /Hr)
Area averaged loss rate (Fm) = 0.3251(In /Hr)
�O
J
M
0
Y�
J
0
Area averaged Pervious ratio (Ap) = 0.4141
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 121.000 to Point /Station 121.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1277.000(Ft.)
Bottom (of initial area) elevation = 1270.500(Ft.)
Difference in elevation = 6.500(Ft.)
Slope = 0.00650 s( %)= 0.65
TC = k(0.389) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = ' 16.880 min.
Rainfall intensity = 3.253(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.791
Subarea runoff = 15.705(CFS)
Total initial stream area = 6.100(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 121.000 to Point /Station 121.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 6.100(Ac.)
Runoff from this stream = 15.705(CFS)
Time of concentration = 16.88 min.
Rainfall intensity = 3.253(In /Hr)
Area averaged loss rate (Fm) = 0.3926(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC
No. (CFS) (min)
Rainfall Intensity
(In /Hr)
1
421.813
34.11
2.133
2
15.705
16.88
3.253
Qmax(1)
=
1.000
* 1.000 *
421.813)
+
0.608
* 1.000 *
15.705)
+ = 431.369
Qmax(2)
=
1.619
* 0.495 *
421.813)
+
1.000
* 1.000 *
15.705)
+ = 353.779
Total of 2 streams to confluence:
Flow rates before confluence point:
421.813 15.705
Maximum flow rates at confluence using above data:
431.369 353.779
Area of streams before confluence:
255.200 6.100
�J
0
Effective area values after confluence:
261.300 132.397
Results of confluence:
Total flow rate = 431.369(CFS)
Time of concentration = 34.108 min.
Effective stream area after confluence = 261.300(Ac.)
Study area average Pervious fraction(Ap) = 0.416
Study area average soil loss rate(Fm) = 0.327(In /Hr)
Study area total (this main stream) = 261.30(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 121.100 to Point /Station 121.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 261.300(Ac.)
Runoff from this stream = 431.369(CFS)
Time of concentration = 34.11 min.
Rainfall intensity = 2.133(In /Hr)
Area averaged loss rate (Fm) = 0.3267(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4161
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 127.000 to Point /Station 121.100
* * ** INITIAL AREA EVALUATION * * **
e
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1280.000(Ft.)
Bottom (of initial area) elevation = 1270.500(Ft.)
Difference in elevation = 9.500(Ft.)
Slope = 0.00950 s(%)= 0.95
TC = k(0.389) *[(length ^3) /(elevation change)] 1, 0.2
Initial area time of concentration = 15.646 min.
Rainfall intensity = 3.405(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.796
Subarea runoff = 9.760(CFS)
Total initial stream area = 3.600(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 127.000 to Point /Station 121.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 3.600(Ac.)
Runoff from this stream = 9.760(CFS)
Time of concentration = 15.65 min.
Rainfall intensity = 3.405(In /Hr)
Area averaged loss rate (Fm) = 0.3926(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
k
Stream Flow rate TC Rainfall
Intensity
No. (CFS) (min)
(In /Hr)
1 431.369 34.11
2.133
2 9.760 15.65
3.405
Qmax (1) _
1.000 * 1.000 * 431.369)
+
0.578 * 1.000 * 9.760)
+ = 437.008
Qmax (2 ) _
1.704 * 0.459 * 431.369)
+
1.000 * 1.000 * 9.760)
+ = 346.933
Total of 2 streams to confluence:
Flow rates before confluence point:
431.369 9.760
Maximum flow rates at confluence using above data:
f
437.008 346.933
Area of streams before confluence:
261.300 3.600
Effective area values after confluence:
I
264.900 123.464
Results of confluence:
.,
Total flow rate = 437.008(CFS)
Time of concentration = 34.108 min.
Effective stream area after confluence =
264.900(Ac.)
Study area average Pervious fraction(Ap)
= 0.417
Study area average soil loss rate(Fm) =
0.328(In /Hr)
Study area total (this main stream) =
264.90(Ac.)
rl
H3
!I
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 121.100 to Point /Station 123.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1270.50(Ft.)
Downstream point /station elevation = 1266.70(Ft.)
Pipe length = 200.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 437.008(CFS)
Nearest computed pipe diameter = 63.00(In.)
Calculated individual pipe flow = 437.008(CFS)
Normal flow depth in pipe = 57.00(In.)
Flow top width inside pipe = 36.99(In.)
Critical depth could not be calculated.
Pipe flow velocity = 21.20(Ft /s)
Travel time through pipe = 0.16 min.
Time of concentration (TC) = 34.27 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 121.100 to Point /Station 123.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 264.900(Ac.)
Runoff from this stream = 437.008(CFS)
Time of concentration = 34.27 min.
Rainfall intensity = 2.127(In /Hr)
Area averaged loss rate (Fm) = 0.3276(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4172
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
33
Process from Point /Station 122.000 to Point /Station 122.100
* * ** INITIAL AREA EVALUATION * * **
wi
0
V
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)=
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1276.000(Ft.)
Bottom (of initial area) elevation = 1268.300(Ft.)
Difference in elevation = 7.700(Ft.)
Slope = 0.00770 s(%)= 0.77
TC = k(0.389) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 16.317 min.
Rainfall intensity = 3.320(In /Hr) for a 100.0
Effective runoff coefficient used for area (Q =KCIA)
Subarea runoff = 17.916(CFS)
Total initial stream area = 6.800(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
0.393(In /Hr)
year storm
is C = 0.794
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 122.100 to Point /Station 123.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1268.300(Ft.)
End of street segment elevation = 1266.700(Ft.)
Length of street segment = 250.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [2] side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 23.186(CFS)
Depth of flow = 0.543(Ft.)
Average velocity = 3.355(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 16.667(Ft.)
Flow velocity = 3.35(Ft /s)
Travel time = 1.24 min. TC = 17.56 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 3.177(In /Hr) for a 100.0 year storm
t�
Effective runoff
rational method)
Subarea runoff =
coefficient used for area,(total area with modified
(Q =KCIA) is C = 0.789
9.149(CFS) for 4.000(Ac.)
Total runoff = 27.065(CFS) Total area =
Area averaged Fm value = 0.393(In /Hr)
Street flow at end of street = 27.065(CFS)
Half street flow at end of street = 13.533(CFS)
Depth of flow = 0.571(Ft.)
Average velocity = 3.444(Ft/s)
Note: depth of flow exceeds top of street crown.
Flow width (from curb towards crown)= 18.000(Ft.)
10.80(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 122.100 to Point /Station 123.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 10.800(Ac.)
Runoff from this stream = 27.065(CFS)
Time of concentration = 17.56 min.
Rainfall intensity = 3.177(In /Hr)
Area averaged loss rate (Fm) = 0.3926(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 128.000 to Point /Station 123.100
INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000,
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1280.000(Ft.)
Bottom (of initial area) elevation = '1266.700(Ft.)
Difference in elevation = 13.300(Ft.)
Slope = 0.01330 s(%)= 1.33
(0.389) *[(length ^3) /(elevation change) ] ^0.2
Inifterl area time of concentration = 14.628 min.
Rainfall intensity = 3.545(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.800
Subarea runoff = 24.117(CFS)
Total initial stream area = 8.500(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 128.000 to Point /Station 123.100
.� * * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 3
Stream flow area = 8.500(Ac.)
Runoff from this stream = 24.117(CFS)
Time of concentration = 14.63 min.
Rainfall intensity = 3.545(In /Hr)
Area averaged loss rate (Fm) = 0.3926(In /Hr)
3s
-
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In /Hr)
1 437.008 34.27 2.127
2 27.065 17.56 3.177
3 24.117 14.63 3.545
Qmax(1) =
1.000 * 1.000 * 437.008) +
0.623 * 1.000 * 27.065) +
0.550 * 1.000 * 24.117) + = 467.140
Qmax(2) =
1.583 * 0.512 * 437.008) +
1.000 * 1.000 * 27.065) +
0.883 * 1.000 * 24.117) + = 402.950
Qmax(3) =
1.788 * 0.427 * 437.008) +
1.132 * 0.833 * 27.065) +
1.000 * 1.000 * 24.117) + = 383.175
Total of 3 streams to confluence:
Flow rates before confluence p oint:
437.008 27.065 24.117
Maximum flow rates at confluence using above data:
467.140 402.950 383.175
Area of streams before confluence:
264.900 10.800 8.500
Effective area values after confluence:
284.200 155.050 130.583
Results of confluence:
Total flow rate = 467.140(CFS)
Time of concentration = 34.265 min.
Effective stream area after - confluence = 284.200(Ac.)
Study area average Pervious fraction(Ap) = 0.423
Study area average soil loss rate(Fm) = 0.332(In /Hr)
Study area total (this main stream) = 284.20(Ac.)
End of computations, total study area = 284.20 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Note: These figures do not consider reduced effective area
effects caused by confluences in the rational equation.
Area averaged pervious area fraction(Ap) = 0.423
Area averaged SCS curve number = 32.0
San Bernardino County Rational Hydrology Program
(Hydrology Manual Date - August 1986)
Civi1CADD /Civi1DESIGN Engineering Software, (c) 1990 Version 2.3
Rational Hydrology Study Date: 3/19/91
HYDROLOGY ANALYSIS FOR CITRUS AVE STORM DRAIN
Q 100 YEAR
IN THE CITY OF FONTANA COUNTY OF SAN BERNARDINO
FILE NAME RAT003 J.N. 90065
* * * * * * * ** Hydrology Study Control Information * * * * * * * * **
Rational hydrology study storm event year is 100.0
10 Year storm 1 hour rainfall = 1.010(In.)
100 Year storm 1 hour rainfall = 1.520(In.)
Computed rainfall intensity:
Storm year = 100.00 1 hour rainfall p = 1.520(In.)
Slope used for rainfall intensity curve b = 0.6000
Soil antecedent moisture condition (AMC) = 3
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 123.100 to Point /Station 123.100
* * ** USER DEFINED FLOW INFORMATION AT A POINT * * **
Soil classification AP and SCS values input by user
USER INPUT of soil data for subarea
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.4230 Max loss rate(Fm)= 0.332(In /Hr)
Rainfall intensity = 2.127(In /Hr) for a 100.0 year storm
User specified values are as follows:
TC = 34.26 min. Rain intensity = 2.13(In /Hr)
Total area = 284.20(Ac.) Total runoff = 467.14(CFS)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 123.100 to Point /Station 130.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1266.70(Ft.)
Downstream point /station elevation = 1254.90(Ft.)
Pipe length = 820.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 467.140(CFS)
Nearest computed pipe diameter = 69.00(In.)
Calculated individual pipe flow = 467.140(CFS)
Normal flow depth in pipe = 58.69(In.)
Flow top width inside pipe = 49.20(In.)
Critical depth could not be calculated.
Pipe flow velocity = 19.86(Ft /s)
Travel time through pipe = 0.69 min.
Time of concentration (TC) = 34.95 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 123.100 to Point /Station 130.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 284.200(Ac.)
37
Runoff from this stream = 467.140(CFS)
Time of concentration 34.95 min.
Rainfall intensity = 2.102(In /Hr)
Area averaged loss rate (Fm) = 0.3321(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4230
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 131.000 to Point /Station 130.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance = 900.000(Ft.)
Top (of initial area) elevation = 1266.000(Ft.)
Bottom (of initial area) elevation = 1254.900(Ft.)
Difference in elevation = 11.100(Ft.)
Slope = 0.01233 s( %)= 1.23
TC = k(0.389) *[(length ^3) /(elevation change)]^0.2
Initial area time of concentration = 14.237 min.
Rainfall intensity = 3.603(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.802
Subarea runoff = 12.714(CFS)
Total initial stream area = 4.400(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 131.000 to Point /Station 130.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 4.400(Ac.)
Runoff from this stream = 12.714(CFS)
Time of concentration = 14.24 min.
Rainfall intensity = 3.603(In /Hr)
Area averaged loss rate (Fm) = 0.3926(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 98.000 to Point /Station 130.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance = 820.000(Ft.)
Top (of initial area) elevation = 1266.000(Ft.)
Bottom (of initial area) elevation = 1254.900(Ft.)
Difference in elevation = 11.100(Ft.)
Slope = 0.01354 s(%)= 1.35
TC = k(0.389) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 13.464 min.
Rainfall intensity = 3.726(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.805
Subarea runoff = 7.500(CFS)
Total initial stream area = 2.500(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 98.000 to Point /Station 130.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1-in normal stream number 3
Stream flow area = 2.500(Ac.)
Runoff from this stream = 7.500(CFS)
Time of concentration = 13.46 min.
Rainfall intensity = 3.726(In /Hr)
Area averaged loss rate (Fm) = 0.3926(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In /Hr)
1 467.140 34.95 2.102
2 12.714 -14.24 3.603
3 7.500 13.46 3.726
Qmax(1) _
1.000 * 1.000 * 467.140) +
0.533 * 1.000 * 12.714) +
F'
0.513 * 1.000 * 7.500) + = 477.757
Qmax(2) _
1.848 * 0.407 * 467.140) +
1.000 * 1.000 * 12.714) +
0.963 * 1.000 * 7.500) + = 371.604
Qmax(3) _
1.917 * 0.385 * 467.140) +
1.038 * 0.946 * 12.714) +
1.000 * 1.000 * 7.500) + = 365.031
Total of 3 streams to confluence:
Flow rates before confluence point:
467.140 12.714 7.500
Maximum flow rates at confluence using above data:
477.757 371.604 365.031
Area of streams before confluence:
284.200 4.400 2.500
Effective area values after confluence:
291.100 122.680 116.151
Results of confluence:
Total flow rate = 477.757(CFS)
Time of concentration = 34.948 min.
Effective stream area after confluence = 291.100(Ac.)
Study area average Pervious fraction(Ap) = 0.425
Study area average soil loss rate(Fm) = 0.334(In /Hr)
Study area total (this main stream) = 291.10(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 98.000 to Point /Station 130.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 291.100(Ac.)
Runoff from this stream = 477.757(CFS)
Time of concentration = 34.95 min.
Rainfall intensity = 2.102(In /Hr)
Area averaged loss rate (Fm) = 0.3335(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4248
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 129.000 to Point /Station 129.100
* * ** INITIAL AREA EVALUATION * * **
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1269.000(Ft.)
Bottom (of initial area) elevation = 1256.700(Ft.)
Difference in elevation = 12.300(Ft.)
Slope = 0.01230 s(%)= 1.23
TC = k(0.304) *[(length ^3) /(elevation change)] ^0;2
Initial area time of concentration = 11.612 min.
Rainfall intensity = 4.072(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.883
Subarea runoff = 35.941(CFS)
Total initial stream area = 10.000(Ac.)
Pervious area fraction = 0.100
Initial area Fm value = 0.079(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 129.100 to Point /Station 130.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1256.700(Ft.)
End of street segment elevation = 1254.900(Ft.)
Length of street segment = 600.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.0
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 49.778(CFS)
Depth of flow = 0.952(Ft.)
Average velocity = 3.077(Ft /s)
Warning: depth of flow exceeds top of curb
yv
Note: depth of flow exceeds top of street crown. . Ft
Distance that curb overflow reaches into property = 14.28 ( )
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 32.000(Ft.)
Flow velocity = 3.08(Ft /s)
Travel time = 3.25 min. TC = 14.86 min.
Adding area flow to street
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
u� Adjusted SCS curve number for AMC 3 = 52.00 0,079 In Hr
= 0.1000 Max loss rate(Fm)= ( / )
Pervious ratio(Ap)
III for a 100.0 year storm
Rainfall intensity = 3.512 ( In / Hr )
Effective runoff coefficient used for area,
(total area with modified
rational method)(Q =KCIA) is C = 0.880
`j Subarea runoff = 18.748(CFS) for 7.700(Ac.)
Total runoff 17.70(Ac.)
.� Area averaged Fm value
Street flow at end of street = 54.688(CFS)
Half street flow at end of street = 54.688(CFS)
Depth of flow = 0.975(Ft.)
Average velocity = 3.180(Ft /s)
Warning: depth of flow exceeds top of curb
Note: depth of flow exceeds top of street crown.
Distance that curb overflow reaches into property = 15.44(Ft.)
Flow width (from curb towards crown)= 32.000(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + ± + + + + + + + + + + + + + + + + ++
Process from Point /Station 1** * 1 1 00 to Point /Station 130.100
1111 CONFLUENCE OF MINOR STREAMS
Along Main Stream numbe17.700normal stream number 2
Stream flow area = (Ac 54.688 CFS
Runoff from this stream = 54.688(CFS)
Time of concentration = 14.86 min.
Rainfall intensity = 3.512(In /Or0785(In /Hr)
Area averaged loss rate (Fm) _ = 0.1000
Area averaged Pervious ratio (Ap)
Summary of stream data:
Sri
Flow rate
TC Rainfall Intensity
Stream
(CFS)
(min)
(In /Hr)
No.
1 477.757
34 .95
2.102 3.512
2 54.688
14.86
Qmax(1) = 1.000 *
1.000 * 477.757)
+
509.995
0.589 *
1.000 * 54.688)
+ =
Qmax(2) _
1.797 *
0.425 * 477.757)
+
1.000 *
1.000 * 54.688)
+ = 41.9.734
Total of 2 streams
to confluence:
Flow rates before
confluence point:
477.757
Maximum flow rates
54.688
at confluence using above
data:
509.995
419.734
Area of streams before
confluence:
291.100
17.700
3
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 130.100 to Point/Station 133.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size)
U stream point /station elevation = 1254.90(Ft.)
P
Downstream point /station elevation = 1247.30(Ft.)
Pipe length = 340.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 509.995(CFS)
Nearest computed pipe diameter = 66.00(In.)
Calculated individual pipe flow = 509.995(CFS)
Normal flow depth in pipe = 55.12(In.)
Flow top width inside pipe = 48.97(In.)
Critical depth could not be calculated.
Pipe flow velocity = 24.07(Ft /s)
Travel time through pipe = 0.24 min.
Time of concentration (TC) = 35.18 min,
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 130.100 to Point /Station 133.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 308.800(Ac.)
Runoff from this stream = 509.995(CFS)
Time of concentration = 35.18 min.
Rainfall intensity = 2.094(In /Hr)
Area averaged loss rate (Fm) = 0.3189(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4062
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 132.000 to Point /Station 132.100
* * ** INITIAL AREA EVALUATION * * **
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.157(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1260.000(Ft:)
Bottom (of initial area) elevation = 1251.100(Ft.)
Difference in elevation = 8.900(Ft.)
Slope = 0.00890 s( %)= 0.89
TC = k(0.324) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 13.203 min.
Rainfall intensity = 3.770(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.863
Effective area values after confluence:
308.800 141.488
Results of confluence:
Total flow rate = 509.995(CFS)
Time of concentration = 34.948 min.
Effective stream area after confluence =
308.800(Ac.)
Study area average Pervious fraction(Ap)
= 0.406
Study area average soil loss rate(Fm) =
0.319(In /Hr)
Study area total (this main stream) =
308.80(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 130.100 to Point/Station 133.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size)
U stream point /station elevation = 1254.90(Ft.)
P
Downstream point /station elevation = 1247.30(Ft.)
Pipe length = 340.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 509.995(CFS)
Nearest computed pipe diameter = 66.00(In.)
Calculated individual pipe flow = 509.995(CFS)
Normal flow depth in pipe = 55.12(In.)
Flow top width inside pipe = 48.97(In.)
Critical depth could not be calculated.
Pipe flow velocity = 24.07(Ft /s)
Travel time through pipe = 0.24 min.
Time of concentration (TC) = 35.18 min,
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 130.100 to Point /Station 133.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 308.800(Ac.)
Runoff from this stream = 509.995(CFS)
Time of concentration = 35.18 min.
Rainfall intensity = 2.094(In /Hr)
Area averaged loss rate (Fm) = 0.3189(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4062
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 132.000 to Point /Station 132.100
* * ** INITIAL AREA EVALUATION * * **
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.157(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1260.000(Ft:)
Bottom (of initial area) elevation = 1251.100(Ft.)
Difference in elevation = 8.900(Ft.)
Slope = 0.00890 s( %)= 0.89
TC = k(0.324) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 13.203 min.
Rainfall intensity = 3.770(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.863
Subarea runoff = 23.737(CFS)
Total initial stream area = 7.300(Ac.)
Pervious area fraction = 0.200
Initial area Fm value = 0.157(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 132.100 to Point /Station 133.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1251.100(Ft.)
End of street segment elevation = 1247.300(Ft.)
Length of street segment = 550.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [2] side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
'► Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 31.541(CFS)
Depth of flow = 0.590(Ft.)
Average velocity = 3.679(Ft/s)
Note: depth of flow exceeds top of street crown.
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 18.000(Ft.)
Flow velocity = 3.68(Ft /s)
Travel time = 2.49 min. TC = 15.69 min.
Adding area flow to street
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
Rainfall intensity = 3.398(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.867
Subarea runoff = 11.902(CFS) for 4.800(Ac.)
Total runoff = 35.639(CFS) Total area = 12.10(Ac.)
Area averaged Fm value = 0.126(In /Hr)
Street flow at end of street = 35.639(CFS)
Half street flow at end of street = 17.819(CFS)
Depth of flow = 0.613(Ft.)
Average velocity = 3.802(Ft /s)
Note: depth of flow exceeds top of street crown.
Flow width (from curb towards crown)= 18.000(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 132.100 to Point /Station 133.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 12.100(Ac.)
Runoff from this stream = 35.639(CFS)
/0
Time of concentration = 15.69 min.
Rainfall intensity = 3.398(In /Hr)
Area averaged loss rate (Fm) = 0.1259(In /Hr)
Area averaged Pervious ratio (Ap) = 0.1603
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In /Hr)
1 509.995 35.18 2.094
2 35.639 15.69 3.398
Qmax (1) _
1.000 * 1.000 * 509.995) +
0.601 * 1.000 * 35.639) + = 531.425
Qmax(2) _
1.735 * 0.446 * 509.995) +
1.000 * 1.000 * 35.639) + = 430.370
Total of 2 streams to confluence:
Flow rates before confluence point:
509.995 35.639
Maximum flow rates at confluence using above data:
531.425 430.370
Area of streams before confluence:
308.800 12.100
Effective area values after confluence:
320.900 149.848
Results of confluence:
1 Total flow rate = 531.425(CFS)
Time of concentration = 35.183 min.
Effective stream area after confluence = 320.900(Ac.)
k,z Study area average Pervious fraction(Ap) = 0.397
Study area average soil loss rate(Fm) = 0.312(In /Hr)
Study area total (this main stream) 320.90(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
40 Process from Point /Station 133.100 to Point /Station 135.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1247.30(Ft.)
�► Downstream point /station elevation = 1243.50(Ft.)
Pipe length = 325.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 531.425(CFS)
Nearest computed pipe diameter = 75.00(In.)
Calculated individual pipe flow = 531.425(CFS)
Normal flow depth in pipe = 64.69(In.)
Flow top width inside pipe = 51.66(In.)
Critical Depth = 70.25(In.)
Pipe flow velocity = 18.89(Ft /s)
Travel time through pipe = 0.29 min.
Time of concentration (TC) = 35.47 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 133.100 to Point /Station 135.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 320.900(Ac.)
Runoff from this stream = 531.425(CFS)
Time of concentration = 35.47 min.
Rainfall intensity = 2.084(In /Hr)
y4
Area averaged loss rate (Fm) = 0.3117(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3969
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 134.000 to Point /Station 134.100
* * ** INITIAL AREA EVALUATION * * **
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.157(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1255.000(Ft.)
Bottom (of initial area) elevation = 1246.700(Ft.)
Difference in elevation = 8.300(Ft.)
Slope = 0.00830 s(%)= 0.83
TC = k(0.324)* (length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 13.388 min.
Rainfall intensity = 3.738(In/Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.862
Subarea runoff = 23.530(CFS)
Total initial stream area = 7.300(Ac.)
Pervious area fraction = 0.200
Initial area Fm value = 0.157(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 134.100 to Point /Station 135.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
ri Top of street segment elevation = 1246.700(Ft.)
End of street segment elevation = 1243.500(Ft.)
Length of street segment = 550.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
po Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [2] side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 31.266(CFS)
Depth of flow = 0.604(Ft.)
Average velocity = 3.446(Ft/s)
Note: depth of flow exceeds top of street crown.
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 18.000(Ft.)
Flow velocity = 3.45(Ft /s)
Travel time = 2.66 min. TC = 16.05 min.
Adding area flow to street
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
J
N
J
�I
�I
J
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
rational method)(Q =KCIA) is C = 0.858
Subarea runoff = 11.277(CFS) for 4.800(Ac.)
Total runoff = 34.807(CFS) Total area = 12.10(Ac.)
Area averaged Fm value = 0.157(In /Hr)
Street flow at end of street = 34.807(CFS)
Half street flow at,end of street = 17.404(CFS)
Depth of flow = 0.625(Ft.)
Average velocity = 3.551(Ft/s)
Note: depth of flow exceeds top of street crown.
Flow width (from curb towards crown)= 18.000(Ft.)
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.157(In /Hr)
Rainfall intensity = 3.353(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process. from Point /Station 134.100 to Point /Station 135.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 12.100(Ac.)
Runoff from this stream = 34.807(CFS)
Time of concentration = 16.05 min.
Rainfall intensity = 3.353(In /Hr)
Area averaged loss rate (Fm) = 0.1570(In /Hr)
Area averaged Pervious ratio (Ap) = 0.2000
Summary of stream data:
Stream
Flow rate
TC
Rainfall Intensity
No.
(CFS)
(min)
(In /Hr)
1
531.425
35.47
2.084
2
34.807
16.05
3.353
Qmax(1)
_
Study area total (this main stream) =
333.00(Ac.)
1.000 *
1.000 *
531.425) +
0.603 *
1.000 *
34.807) + = 552.406
Qmax(2) _ 1.717 * 0.452 * 531.425) +
1.000 * 1.000 * 34.807) + = 447.544
Total of 2 streams to confluence:
Flow rates before confluence point:
531.425 34.807
Maximum flow rates at confluence using above data:
552.406 447.544
Area of streams before confluence:
320.900 12.100
Effective area values after confluence:
333.000 157.294
Results of confluence:
Total flow rate = 552.406(CFS)
Time of concentration = 35.470 min.
Effective stream area after confluence =
333.000(Ac.)
Study area average Pervious fraction(Ap)
= 0.390
Study area average soil loss rate(Fm) =
0.306(In /Hr)
Study area total (this main stream) =
333.00(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
// �
Process from Point /Station 135.100 to Point/Stati 136.100
(
* * ** PIPEFLOW TRAVEL TIME (Program estimated size)
Upstream point /station elevation = 1243.50(Ft.)
Downstream point /station elevation = 1242.00(Ft.)
Pipe length = 120.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 552.406(CFS)
Nearest computed pipe diameter = 75.00(In.)
Calculated individual pipe flow = 552.406(CFS)
Normal flow depth in pipe = 65.25(In.)
Flow top width inside pipe = 50.45(In.)
1W Critical Depth = 70.84(In.)
Pipe flow velocity = 19.51(Ft /s)
OR Travel time through pipe = 0.10 min.
, - - 1 Time of concentration (TC) = 35.57 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
j Process from Point /Station 135.100 to Point /Station 136.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
40
Along Main Stream number: 1 in normal stream number
Stream flow area = 333.000(Ac.)
Runoff from this stream = 552.406(CFS)
on Time of concentration = 35.57 min.
``i Rainfall intensity = 2.080(In /Hr)
Area averaged loss rate (Fm) = 0.3060(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3898
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 136.000 to Point /Station 136.100
* * ** INITIAL AREA EVALUATION * * **
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
>� SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.1000 Max lss- ate(Fm)= 0.079(In /Hr)
+� Initial subarea data:
Initial area flow distance - 750.000(Ft.)
Top (of initial area) eleva ion = 1254.000( t.)
Bottom (of initial area) elevation = 12 . 00(Ft.)
Difference in elevation = 12.000(Ft.)
Slope = 0.01600 s(%)= 1.60
TC = k(0.304) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 9.819 min.
Rainfall intensity = 4.503(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.884
Subarea runoff = 15.131(CFS)
Total initial stream area = 3.800(Ac.)
Pervious area fraction = 0.100
Initial area Fm value = 0.079(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 136.000 to Point /Station 136.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 3.800(Ac.)
47
Runoff from this stream = 15.131(CFS)
Time of concentration = 9.82 min.
Rainfall intensity = 4.503(In /Hr)
Area averaged loss rate (Fm) = 0.0785(In /Hr)
Area averaged Pervious ratio (Ap) = 0.1000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS). (min) (In /Hr)
1 552.406 35.57 2.080
2 15.131 9.82 4.503
Qmax (1) _
1.000 * 1.000 * 552.406) +
0.452 * 1.000 * 15.131) + = 559.251
Qmax(2) _
2.366 * 0.276 * 552.406) +
1.000 * 1.000 * 15.131) + = 375.869
Total of 2 streams to confluence:
Flow rates before confluence point:
552.406 15.131
Maximum flow rates at confluence using above data:
559.251 375.869
Area of streams before confluence:
333.000 3.800
Effective area values after confluence:
336.800 95.718
Results of confluence:
Total flow rate = 559.251(CFS)
Time of concentration = 35.573 min.
Effective stream area after confluence = 336.800(Ac.)
Study area average Pervious fraction(Ap) = 0.387
Study area average soil loss rate(Fm) = 0.303(In /Hr)
Study area total (this main stream) = 336.80(Ac.)
,3
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 136.100 to Point /Station 137.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1242.00(Ft.)
M
Downstream point /station elevation = 1238.50(Ft.
Pipe length = 150.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 559.251(CFS)
Nearest computed pipe diameter = 69.00(In.)
Calculated individual pipe flow = 559.251(CFS)
Normal flow depth in pipe = 54.66(In.)
Flow top width inside pipe = 56.00(In.)
Critical depth could not be calculated.
Pipe flow velocity = 25.34(Ft /s)
Travel time through pipe = 0.10 min.
Time of concentration (TC) = 35.67 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 136.100 to Point /Station 137.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 336.800(Ac.)
Runoff from this stream = 559.251(CFS)
Time of concentration = 35.67 min.
Rainfall intensity = 2.077(In /Hr)
Area averaged loss rate (Fm) = 0.3035(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3865
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 137.000 to Point /Station 137.100
* * ** INITIAL AREA EVALUATION * * **
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.157(In /Hr)
Initial subarea data:
Initial area flow distance = 750.000(Ft.)
Top (of initial area) elevation = 1247.000(Ft.)
Bottom (of initial area) elevation = 1238.500(Ft.)
Difference in elevation = 8.500(Ft.)
Slope = 0.01133 s( %)= 1.13
TC = k(0.324) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 11.212 min.
Rainfall intensity,= 4.158(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.866
Subarea runoff = 20.887(CFS)
s Total initial stream area = 5.800(Ac.)
Pervious area fraction = 0.200
Initial area Fm value = 0.157(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 137.000 to Point /Station 137.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 5.800(Ac.)
Runoff from this stream = 20.887(CFS)
Time of concentration = 11.21 min.
Rainfall intensity = 4.158(In /Hr)
Area averaged loss rate (Fm) = 0.1570(In /Hr)
Area averaged Pervious ratio (Ap) = 0.2000
Summary of stream data:
In
Stream
Flow rate
TC
Rainfall Intensity
No.
(CFS)
(min)
(In /Hr)
1
559.251
35.67
2.077
2
20.887
11.21
4.158
Qmax (1)
_
1.000 *
1.000 *
559.251)
+
0.480 *
1.000 *
20.887)
+ = 569.271
Qmax(2)
_
2.174 *
1.000 *
0.314 *
1.000 *
559.251)
20.887)
+
+ = 403.061
Total of 2 streams to confluence:
Flow rates before confluence point:
559.251 20.887
Maximum flow rates at confluence using above data:
569.271 403.061 U
Upstream point /station elevation = 1238.50(Ft.)
Downstream point /station elevation = 1230.60(Ft.)
Pipe length = 660.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 569.271(CFS)
Nearest computed pipe diameter = 78.00(In.)
Calculated individual pipe flow = 569.271(CFS)
Normal flow depth in pipe = 63.38(In.)
Flow top width inside pipe = 60.89(In.)
Critical Depth = 72.58(In.)
Pipe flow velocity = 19.71(Ft/s)
Travel time through pipe = 0.56 min.
Time of concentration (TC) = 36.23 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 137.100 to Point /Station 139.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 342.600(Ac.)
Runoff from this stream = 569.271(CFS)
Time of concentration = 36.23 min.
Rainfall intensity = 2.057(In /Hr)
Area averaged loss rate (Fm) = 0.3010(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3834
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 138.000 to Point /Station 138.100
* * ** INITIAL AREA EVALUATION * * **
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm) =• 0.157(In /Hr)
Initial subarea data:
Initial area flow distance = 750.000(Ft.)
Top (of initial area) elevation = 1242.000(Ft.)
Bottom (of initial area) elevation = 1232.200(Ft.)
Difference in elevation = 9.800(Ft.)
Slope = 0.01307 s(%)= 1.31
TC = k(0.324) *[(length ^3) /(elevation change)] ^0;2
Initial area time of concentration = 10.898 min.
� n
Area of streams before confluence:
336.800 5.800
Effective area values after confluence:
342.600 111.665
Results of confluence:
Total flow rate = 569.271(CFS)
Time of concentration = 35.671 min.
Effective stream area after confluence =
342.600(Ac.)
Study area average Pervious fraction(Ap)
= 0.383
Study area average soil loss rate(Fm) =
0.301(In /Hr)
Study area total (this main stream) =
342.60(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 137.100
to Point /Station 139.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1238.50(Ft.)
Downstream point /station elevation = 1230.60(Ft.)
Pipe length = 660.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 569.271(CFS)
Nearest computed pipe diameter = 78.00(In.)
Calculated individual pipe flow = 569.271(CFS)
Normal flow depth in pipe = 63.38(In.)
Flow top width inside pipe = 60.89(In.)
Critical Depth = 72.58(In.)
Pipe flow velocity = 19.71(Ft/s)
Travel time through pipe = 0.56 min.
Time of concentration (TC) = 36.23 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 137.100 to Point /Station 139.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 342.600(Ac.)
Runoff from this stream = 569.271(CFS)
Time of concentration = 36.23 min.
Rainfall intensity = 2.057(In /Hr)
Area averaged loss rate (Fm) = 0.3010(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3834
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 138.000 to Point /Station 138.100
* * ** INITIAL AREA EVALUATION * * **
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm) =• 0.157(In /Hr)
Initial subarea data:
Initial area flow distance = 750.000(Ft.)
Top (of initial area) elevation = 1242.000(Ft.)
Bottom (of initial area) elevation = 1232.200(Ft.)
Difference in elevation = 9.800(Ft.)
Slope = 0.01307 s(%)= 1.31
TC = k(0.324) *[(length ^3) /(elevation change)] ^0;2
Initial area time of concentration = 10.898 min.
� n
Rainfall intensity = 4.230(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.867
Subarea runoff = 21.261(CFS)
Total initial stream area = 5.800(Ac.)
Pervious area fraction = 0.200
Initial area Fm value = 0.157(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 138.100 to Point /Station 139.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
E]
i'
�I
tr'
P'.
Top of street segment elevation = 1232.200(Ft.)
End of street segment elevation = 1230.600(Ft.)
Length of street segment = 300.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.763(Ft.)
Average velocity = 3.380(Ft /s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property =
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 27.670(Ft.)
Flow velocity = 3.38(Ft /s)
Travel time = 1.48 min. TC = 12.38 min.
Adding area flow to street
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
28.958(CFS)
4.84(Ft.)
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.157(In /Hr)
Rainfall intensity = 3.919(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.864
Subarea runoff = 12.596(CFS) for 4.200(Ac.)
Total runoff = 33.857(CFS) Total area = 10.00(Ac.)
Area averaged Fm value = 0.157(In /Hr)
Street flow at end of street = 33.857(CFS)
Half street flow at end of street = 33.857(CFS)
Depth of flow = 0.799(Ft.)
Average velocity = 3.458(Ft/s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 6.62(Ft.)
Flow width (from curb towards crown)= 29.455(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 140.000 to Point /Station 139.100
* * ** SUBAREA FLOW ADDITION * * **
5�
Fl
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.157(In /Hr)
Time of concentration = 12.38 min.
Rainfall intensity = 3.919(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.864
Subarea runoff = 6.094(CFS) for 1.800(Ac.)
Total runoff = 39.951(CFS) Total area = 11.80(Ac.)
Area averaged Fm value = 0.157(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 140.000 to Point /Station 139.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 11.800(Ac.)
Runoff from this stream = 39.951(CFS)
Time of concentration = 12.38 min.
Rainfall intensity = 3.919(In /Hr)
Area averaged loss rate (Fm) = 0.1570(In /Hr)
Area averaged Pervious ratio (Ap) = 0.2000
Summary of stream data:
Area of streams before confluence:
342.600 11.800
Effective area values after confluence:
354.400 128.843
Results of confluence:
Total flow rate = 5Q2-d 21 C_FS),
Time of concentration = 36 .229 m in.
Effective stream area a er con c =
Study area average Pervious fraction(Ap)
Study area average soil loss rate(Fm) _
Study area total (this main stream) _
End of computations, total study area =
The following figures may
354.400 (Ac.
0.377
0.296(In /Hr)
354.40(Ac.)
354.40 (Ac.)
be used for a unit hydrograph study of the same area.
Note: These figures do not consider reduced effective area
-� of
Stream Flow rate
TC
Rainfall Intensity
No. (CFS)
(min)
(In /Hr)
1 569.271
36.23
2.057
2 39.951
12.38
3.919
Qmax (1) _
.w
1.000 *
1.000 *
569.271)
+
0.505 *
1.000 *
39.951)
+ = 589.452
�
Qmax(2) _
2.060 *
0.342 *
569.271)
+
1.000 *
1.000 *
39.951)
+ = 440.570
Total of 2 streams
to confluence:
Flow rates before
569.271
confluence
39.951
point:
Maximum flow rates
at confluence
using above data:
589.452
440.570
Area of streams before confluence:
342.600 11.800
Effective area values after confluence:
354.400 128.843
Results of confluence:
Total flow rate = 5Q2-d 21 C_FS),
Time of concentration = 36 .229 m in.
Effective stream area a er con c =
Study area average Pervious fraction(Ap)
Study area average soil loss rate(Fm) _
Study area total (this main stream) _
End of computations, total study area =
The following figures may
354.400 (Ac.
0.377
0.296(In /Hr)
354.40(Ac.)
354.40 (Ac.)
be used for a unit hydrograph study of the same area.
Note: These figures do not consider reduced effective area
-� of
effects caused by confluences in the rational equation.
Area averaged pervious area fraction(Ap) = 0.377
Area averaged SCS curve number = 32.0
N
oft
wd
MR
ON
A.
r
F
MO
aw
a"
00
M
Ik
HYDROLOGY STUDY
_______________
VVZTBODT OVERFLOW FROM BASELINE AVENUE
_____________________________________
{) 100 YEAR
___________
���
�7-
San Bernardino County Rational Hydrology Program
(Hydrology Manual Date - August 1986)
CivilCADD /Civi1DESIGN Engineering Software, (c) 1990 Version 2.3
-- - - - - -- Rational Hydrology Study Date: 3/19/91
---------------- ---------------------------
HYDROLOGY ANALYSIS FOR CITRUS AVE STORM DRAIN
Q 100 YEAR
IN THE CITY OF FONTANA COUNTY OF SAN BERNARDINO
DATA TO BE USED IN RAT2 FILE NAME RAT1 J.N. 90065
------------------------------------------------------------------------
********* Hydrology Study Control Information * * * * * * * * **
Rational hydrology study storm event year is 100.0
10 Year storm 1 hour rainfall = 1.010(In.)
i�r11 100 Year storm 1 hour rainfall = 1.520(In.)
Computed rainfall intensity:
Storm year = 100.00 1 hour rainfall p = 1.520(In.)
Slope used for rainfall intensity curve b = 0.6000
Soil antecedent moisture condition (AMC) = 3
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 100.000 to Point /Station 100.100
INITIAL AREA EVALUATION * * **
im COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1396.700(Ft.)
Bottom (of initial area) elevation = 1387.000(Ft.)
Difference in elevation = 9.700(Ft.)
Slope = 0.00970 s(%)= 0.97
TC = k(0.304) *[(length ^ 3) /(elevation change)] ^0.2
Initial area time of concentration = 12.176 min.
Rainfall intensity = 3.958(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.882
Subarea runoff = 17.456(CFS)
Total initial stream area = 5.000(Ac.)
Pervious area fraction = 0.100
Initial area Fm value = 0.079(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 100.100 to Point /Station 101.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1387.000(Ft.)
End of street segment elevation = 1381.500(Ft.)
Length of street segment = 330.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
55-
Slope from grade break to crown (v /hz) = 0.020
Street flow is on (1) side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 26.183(CFS)
Depth of flow = 0.605(Ft.)
� Average velocity = 5.729(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 19.731(Ft.)
Flow velocity = 5.73(Ft /s)
W Travel time = 0.96 min. TC = 13.14 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000,
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
iri SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 3.781(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.844
Subarea runoff = 14.457(CFS) for 5.000(Ac.)
Total runoff = 31.912(CFS) Total area = 10.00(Ac.)
Area averaged Fm value = 0.236(In /Hr)
Street flow at end of street = 31.912(CFS)
Half street flow at end of street = 31.912(CFS)
Depth of flow = 0.644(Ft.)
Average velocity 5.928(Ft /s)
Flow width (from curb towards crown)= 21.693(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 101.100 to Point /Station 102.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1381.500(Ft.)
End of street segment elevation = 1378.500(Ft.)
Length of street segment = 200.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
M R Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1) side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 36.699(CFS)
Depth of flow = 0.696(Ft.)
Average velocity = 5.552(Ft/s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 1.48(Ft.)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 24.313(Ft.)
Flow velocity = 5.55(Ft /s)
Travel time = 0.60 min. TC = 13.74 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 3.681(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.834'
Subarea runoff = 7.979(CFS) for 3.000(Ac.)
Total runoff = 39.891(CFS) Total area = 13.00(Ac.)
Area averaged Fm value = 0.272(In /Hr)
Street flow at end of street = 39.891(CFS)
Half street flow at end of street = 39.891(CFS)
Depth of flow = 0.718(Ft.)
Average velocity = 5.553(Ft/s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 2.55(Ft.)
Flow width (from curb towards crown)= 25.381(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
po Process from Point /Station 102.100 to Point /Station 103.100
W * * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1378.500(Ft.)
End of street segment elevation = 1370.500(Ft.)
Length of street segment = 350.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
�+ Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 56.155(CFS)
Depth of flow = 0.748(Ft.)
Average velocity = 6.939(Ft/s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 4.09(Ft.)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 26.922(Ft.)
Flow velocity = 6.94(Ft /s)
Travel time = 0.84 min. TC = 14.58 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
57
r�
rl
0"
rn
h
F]
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 3.552(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.817
Subarea runoff = 28.637(CFS) for 10.600(Ac.)
Total runoff = 68.528(CFS) Total area = 23.60(Ac.)
Area averaged Fm'value = 0.326(In /Hr)
Street flow at end of street = 68.528(CFS)
Half street flow at end of street = 68.528(CFS)
Depth of flow = 0.794(Ft.)
Average velocity = 7.133(Ft/s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 6.36(Ft.)
Flow width (from curb towards crown)= 29.197(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 103.100 to Point /Station 104.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1370.500(Ft.)
End of street segment elevation = 1352.000(Ft.)
Length of street segment = 960.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
. Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 90.742(CFS)
Depth of flow = 0.877(Ft.)
Average velocity = 7.038(Ft /s)
Warning: depth of flow exceeds top of curb
Note: depth of flow exceeds top of street crown.
Distance that curb overflow reaches into property = 10.52(Ft.)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 32.000(Ft.)
Flow velocity = 7.04(Ft /s)
Travel time = 2.27 min. TC = 16.85 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 3.257(In /Hr) for a . 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.803.
Subarea runoff = 33.154(CFS) for 15.300(Ac.)
Total runoff = 101.682(CFS) Total area = 38.90(Ac.)
Area averaged Fm value = 0.352(In /Hr)
Street flow at end of street = 101.682(CFS)
Half street flow at end of street = 101.682(CFS)
Depth of flow = 0.903(Ft.)
5�1
Average velocity = 7.260(Ft /s)
Warning: depth of flow exceeds top of curb
Note: depth of flow exceeds top of street crown.
Distance that curb overflow reaches into property = 11.81(Ft.)
Flow width (from curb towards crown)= 32.000(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 104.100 to Point/Station ** 105.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION
0
F!
N
e
Top of street segment elevation = 1352.000(Ft.)
End of street segment elevation = 1341.000(Ft.)
Length of street segment = 640.000(Ft.)
Height of curb above gutter flowline 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
f row crossfall grade break = 24.000(Ft.)
101.682(CFS)
12.48 (Ft.)
Adjusted S cur
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 3.091(In /Hr) for a 100.0 year storm
ff' t used for area (total area with modified
Dstance rom c
ope from Butte obluroperty ade break (v /hz) = 0.040
ope from grad to crown (v /hz) = 0.020
reet flow is ide(s) of the street
cu line = 20.000(Ft.)
15 pe from curb erty line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.916(Ft.)
Average velocity = 6.966(Ft/s)
Warning: depth of flow exceeds top of curb
Note: depth of flow exceeds top of street crown.
Distance that curb overflow reaches into property =
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 32.000(Ft.)
Flow velocity = 6.97(Ft /s)
Travel time = 1.53 min. TC = 18.38 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
sCS curve number for soil(AMC 2) = 32.00
CS ve number for AMC 3 = 52.00
Effective runoff co- i% n
rational method)(Q =KCIA) is C = 0.797
Subarea runoff = 0.000(CFS) for 0.000(Ac.)
Total runoff = 101.682(CFS) Total area = 38.90(Ac.)
Area averaged Fm value = 0.352(In /Hr)
Street flow at end of street = 101.682(CFS)
Half street flow at end of street = 101.682(CFS)
Depth of flow = 0.916(Ft.)
Average velocity = 6.966(Ft/s)
Warning: depth of flow exceeds top of curb
Note: depth of flow exceeds top of street crown.
Distance that curb overflow reaches into property = 12.48(Ft.)
Flow width (from curb towards crown)= 32.000(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 105.000 to Point /Station 105.100
.�,y
* * ** SUBAREA FLOW ADDITION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Time of concentration = 18.38 min.
Rainfall intensity = 3.091(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.794
Subarea runoff = 40.831(CFS) for 19.200(Ac.)
Total runoff = 142.513(CFS) Total area = 58.10(Ac.)
Area averaged Fm value = 0.366(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 105.000 to Point /Station 105.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
rrr
Along Main Stream number: 1 in normal stream number 1
o�• Stream flow area = 58.100(Ac.)
Runoff from this stream = 142.513(CFS)
Time of concentration = 18.38 min.
Rainfall intensity = 3.091(In /Hr)
�. Area averaged loss rate (Fm) = 0.3655(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4656
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 106.000 to Point /Station 106.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1391.600(Ft.)
Bottom (of initial area) elevation = 1379.000(Ft.)
Difference in elevation = 12.600(Ft.)
Slope = 0.01260 s( %)= 1.26
TC = k(0.389) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 14.787 min.
Rainfall intensity = 3.522(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.800
Subarea runoff = 12.675(CFS)
Total initial stream area = 4.500(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr) '
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 106.100 to Point/Stat 104.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION
k-
Top of street segment elevation = 1379.000(Ft.)
End of street segment elevation = 1352.000(Ft.)
Length of street segment = 1400.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
17.463(CFS)
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 3.041(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (total area with modified
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 8.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.519(Ft.)
Average velocity = 5.688(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 15.469(Ft.)
Flow velocity = 5.69(Ft /s)
Travel time = 4.10 min. TC = 18.89 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
rational method)(Q =KCIA) is C = 0.784
Subarea runoff = 6.155(CFS) for 3.400
Total runoff = 18.830(CFS) Total a ea = 7.90(Ac.)
Area averaged Fm value = 0.393(In /Hr)
Street flow at end of street = 18.830(CFS)
Half street flow at end of street = 18.830(CFS)
Depth of flow = 0.532(Ft.)
Average velocity = 5.760(Ft /s)
Flow width (from curb towards crown)= 16.099(Ft.)
M
t�
r1
Fl
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 104.100 to Point /Station 105.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1352.000(Ft.)
End of street segment elevation = 1341.000(Ft.)
Length of street segment = 640.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 8.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
19�,/
0
0
an
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.558(Ft.)
Average velocity = 5.574(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 17.383(Ft.)
Flow velocity = 5.57(Ft /s)
Travel time = 1.91 min. TC = 20.80 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
20.617(CFS)
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 2.870(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.777
Subarea runoff = 2.128(CFS) for 1.500(Ac.)
Total runoff = 20.958(CFS) Total area = 9.40(Ac.)
Area averaged Fm value = 0.393(In /Hr)
Street flow at end of street = 20.958(CFS)
Half street flow at end of street = 20.958(CFS)
Depth of flow = 0.561(Ft.)
Average velocity = 5.589(Ft/s)
Flow width (from curb towards crown)= 17.528(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 104.100 to Point /Station 105.100
CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 9.400(Ac.)
Runoff from this stream = 20.958(CFS)
Time of concentration = 20.80 min.
Rainfall intensity = 2.870(In /Hr)
Area averaged loss rate (Fm) = 0.3926(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In /Hr)
1 142.513
18.38
3.091
2 20.958
20.80
2.870
Qmax(1) _
1.000 *
1.000
* 142.513)
+
1.089 *
0.884
* 20.958)
+ = 162.685
Qmax(2) _
0.919 *
1.000
* 142.513)
+
1.000 *
1.000
* 20.958)
+ = 151.907
Total of 2 streams
to confluence:
Flow rates before
confluence
point:
142.513
20.958
Maximum flow rates
at confluence
using above data:
162.685
151.907
Area of streams before
confluence:
58.100
9.400
Effective area values
after
confluence:
0
Ei
F
E]
�r
66.406 67.500
Results of confluence:
Total flow rate = 162.685(CFS)
Time of concentration = 18.382 min.
Effective stream area after confluence = 66.406(Ac.)
Study area average Pervious fraction(Ap) = 0.470
Study area average soil loss rate(Fm) = 0.369(In /Hr)
Study area total (this main stream) = 67.50(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 105.100 to Point /Station 109.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1341.00(Ft.)
Downstream point /station elevation =- 1329.70(Ft.)
Pipe length = 650.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 162.685(CFS)
Nearest computed pipe diameter = 45.00(In.)
Calculated individual pipe flow = 162.685(CFS)
Normal flow depth in pipe = 37.78(In.)
Flow top width inside pipe = 33.03(In.)
Critical depth could not be calculated.
Pipe flow velocity = 16.44(Ft /s)
Travel time through,pipe = 0.66 min.
Time of concentration (TC) = 19.04 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 109.000 to Point /Station 109.100
* * ** SUBAREA FLOW ADDITION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Time of concentration = 19.04 min.
Rainfall intensity = 3.026(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.866
Subarea runoff = 33.092(CFS) for 15.600(Ac.)
Total runoff = 195.777(CFS) Total area = 82.01(Ac.)
Area averaged Fm value = 0.374(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 109.100 to Point /Station 110.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1329.70(Ft.)
Downstream point /station elevation = 1313.80(Ft.)
Pipe length = 920.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 195.777(CFS)
Nearest computed pipe diameter = 48.00(In.)
Calculated individual pipe flow = 195.777(CFS)
Normal flow depth in pipe = 41.16(In.)
Flow top width inside pipe = 33.57(In.)
Critical depth could not be calculated.
Pipe flow velocity = 17.07(Ft /s)
Travel time through pipe = 0.90 min.
Xn
Time of concentration (TC) = 19.94 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 110.000 to Point /Station 110.100
SUBAREA FLOW ADDITION * * **
■
RESIDENTIAL(5 - 7 dwl /acre)
{ Decimal fraction soil group A = 1.000
. Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Time of concentration = 19.94 min.
Rainfall intensity = 2.944(In /Hr) for a 100.0 year storm
■ Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.853
Subarea runoff = 27.432(CFS) for 14.600(Ac.)
Total runoff = 223.209(CFS) Total area = 96.61(Ac.)
Area averaged Fm value = 0.377(In /Hr)
■ +++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 110.100 to Point /Station 111.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1313.80(Ft.)
Downstream point /station elevation = 1307.70(Ft.)
Pipe length = 420.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 223.209(CFS)
Nearest computed pipe diameter = 54.00(In.)
Calculated individual pipe flow = 223.209(CFS)
Normal flow depth in pipe = 41.67(In.)
Flow top width inside pipe = 45.33(In.)
Critical Depth = 49.99(In.)
Pipe flow velocity = 16.94(Ft /s)
Travel time through pipe = 0.41 min.
Time of concentration (TC) = 20.35 min.
■ +++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 111.000 to Point /Station 111.100
* * ** SUBAREA FLOW ADDITION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Time of concentration = 20.35 min.
Rainfall intensity = 2.908(In /Hr) for a 100.0 year storm
• Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.833
Subarea runoff = 74.515(CFS) for 34.300(Ac.)
Total runoff = 297.724(CFS) Total area = 130.91(Ac.)
Area averaged Fm value = 0.381(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
rZ
Process from Point /Station 111.100 to Point /Station 112.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1307.70(Ft.)
Downstream point /station elevation = 1297.70(Ft.)
Pipe length = 650.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 297.724(CFS)
Nearest computed pipe diameter = 57.00(In.)
Calculated individual pipe flow = 297.724(CFS)
Normal flow depth in pipe = 50.44(In.)
Flow top width inside pipe = 36.39(In.)
Critical depth could not be calculated.
Pipe flow velocity = 17.96(Ft /s)
Travel time through pipe = 0.60 min.
Time of concentration (TC) = 20.96 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 112.000 to Point /Station 112.100
* * ** SUBAREA FLOW ADDITION * * **
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
Time of concentration = 20.96 min.
Rainfall intensity = 2.857(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.833
Subarea runoff = 46.318(CFS) for 20.900(Ac.)
Total runoff = 344..042(CFS) Total area = 151.81(Ac.)
Area averaged Fm value = 0.339(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 112.000 to Point /Station 112.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 151.806(Ac.)
Runoff from this stream = 344.042(CFS)
Time of concentration = 20.96 min.
Rainfall intensity = 2.857(In /Hr)
Area averaged loss rate (Fm) = 0.3392(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4320
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 105.100 to Point /Station 113.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1341.000(Ft.)
Bottom (of initial area) elevation = 1323.000(Ft.)
Difference in elevation = 18.000(Ft.)
Slope = 0.01800 s( %)= 1.80
TC = k(0.389) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 13.769 min.
Rainfall intensity = 3.676(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.804
Subarea runoff = 6.797(CFS)
Total initial stream area = 2.300(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 113.100 to Point /Station 110.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1323.000(Ft.)
End of street segment elevation = 1313.800(Ft.)
Length of street segment = 570.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 8.000(Ft.)
Scope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 8.422(CFS)
Depth of flow = 0.424(Ft.)
Average velocity = 4.633(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 10.680(Ft.)
Flow velocity = 4.63(Ft /s)
Travel time = 2.05 min. TC = 15.82 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 3.382(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.796
Subarea runoff = 2.352(CFS) for 1.100(Ac.)
Total runoff = 9.149(CFS) Total area = •3.40(Ac.)
Area averaged Fm value = 0.393(In /Hr)
Street flow at end of street = 9.149(CFS)
Half street flow at end of street = 9.149(CFS)
Depth of flow = 0.435(Ft.)
Average velocity = 4.711(Ft /s)
Flow width (from curb towards crown)= 11.244(Ft.)
ti
0
OR
6
F�
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 110.100 to Point /Station 112.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1313.800(Ft.)
End of street segment elevation = 1297.700(Ft.)
Length of street segment = 1070.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
12.109(CFS)
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 2.982(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 8.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.481(Ft.)
Average velocity = 4.821(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 13.542(Ft.)
Flow velocity = 4.82(Ft /s)
Travel time = 3.70 min. TC = 19.52 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Ad'7
usted SCS curve number for AMC 3 = 52.00
rational method)(Q =KCIA) is C = 0.782
Subarea runoff = 3.901(CFS) for 2.200(Ac.)
Total runoff = 13.049(CFS) Total area = 5.60(Ac.)
Area averaged Fm value = 0.393(In /Hr)
Street flow at end of street = 13.049(CFS)
Half street flow at end of street = 13.049(CFS)
Depth of flow = 0.492(Ft.)
Average velocity = 4.884(Ft/s)
Flow width (from curb towards crown)= 14.122(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 110.100 to Point /Station 112.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 5.600(Ac.)
Runoff from this stream = 13.049(CFS)
Time of concentration = 19.52 min.
Rainfall intensity = 2.982(In /Hr)
Area averaged loss rate (Fm) = 0.3926(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC
No. (CFS) (min)
e-
Rainfall Intensity
(In /Hr)
hJ
e
Fl
C
n
G
1 344.042
2 13.049
Qmax (1) =
1.000
0.952
Qmax(2) =
1.049
1.000
20.96
19.52
2.857
2.982
1.000 * 344.042) +
1.000 * 13.049) + _
0.931 * 344.042) +
1.000 * 13.049) + _
356.464
349.330
Total of 2 streams to confluence:
Flow rates before confluence point:
344.042 13.049
Maximum flow rates at confluence using above data:
356.464 349.330
Area of streams before confluence:
151.806 5.600
Effective area values after confluence:
157.406 146.994
Results of confluence:
Total flow rate = 356.464(CFS)
Time of concentration = 20.956 min.
Effective stream area after confluence = 157.406(Ac.)
Study area average Pervious fraction(Ap) = 0.434
Study area average soil loss rate(Fm) = 0.341(In /Hr)
Study area total (this main stream) = 157.41(Ac.)
End of computations, total study area = 158.50 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Note: These figures do not consider reduced effective area
effects caused by confluences in the rational equation.
Area averaged pervious area fraction(Ap) = 0.435
Area averaged SCS'curve number = 32.0
Bernardino Count Rational Hydrology Pro
San Ber y Y gY ram g
(Hydrology Manual Date - August 1986)
Civi1CADD /Civi1DESIGN Engineering Software, (c) 1990 Version 2.3
Rational Hydrology Study Date: 3/19/91
------------------------------------------------------------------ - - - - --
HYDROLOGY ANALYSIS FOR CITRUS AVE STORM DRAIN
Q 100 YEAR
IN THE CITY OF FONTANA COUNTY OF SAN BERNARDINO
DATA TO BE USED IN RAT3 FILE NAME RAT2 J.N. 90065
* * * * * * * ** Hydrology Study Control Information * * * * * * * * **
Rational hydrology study storm event year is 100.0
10 Year storm 1 hour rainfall = 1.010(In.)
100 Year storm 1 hour rainfall = 1.520(In.)
Computed rainfall intensity:
Storm year = 100.00 1 hour rainfall p = 1.520(In.)
Slope used for rainfall intensity curve b = 0.6000
Soil antecedent moisture condition (AMC) = 3
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 112.100 to Point /Station 112.100
* * ** USER DEFINED FLOW INFORMATION AT A POINT * * **
Soil classification AP and SCS values input by user
USER INPUT of soil data for subarea
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.4350 Max loss rate(Fm)= 0.342(In /Hr)
Rainfall intensity = 2.857(In /Hr) for a 100.0 year storm
User specified values are as follows:
TC = 20.96 min. Rain intensity = 2.86(In /Hr)
Total area = 158.50(Ac.) Total runoff = 356.46(CFS)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 112.100 to Point /Station 125.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1297.70(Ft.)
Downstream point /station elevation = 1291.50(Ft.)
Pipe length = 340.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 356.460(CFS)
Nearest computed pipe diameter = 60.00(In.)
Calculated individual pipe flow = 356.460(CFS)
Normal flow depth in pipe = 49.97(In.)
Flow top width inside pipe = 44.78(In.)
Critical depth could not be calculated.
Pipe flow velocity = 20.41(Ft /s)
Travel time through pipe = 0.28 min.
Time of concentration (TC) = 21.24 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 125.000 to Point /Station 125.100
* * ** SUBAREA FLOW ADDITION * * **
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
Time of concentration = 21.24 min.
Rainfall intensity = 2.834(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
.� rational method)(Q =KCIA) is C = 0.897
Subarea runoff = 11.557(CFS) for 5.000(Ac.)
Wr Total runoff = 368.017(CFS) Total area = 163.50(Ac.)
Area averaged Fm value = 0.333(In /Hr)
im +++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 125.100 to Point /Station 116.100
PIPEFLOW TRAVEL TIME (Program estimated size) **
Upstream point /station elevation = 1291.
Downstream point /station elevation = 50( . Pipe length = 240.00(Ft.) Manni JfE
- .013
No. of pipes = 1 Required pipe flow = 368.017(CFS)
Nearest computed pipe diameter = 66.00(In.)
O Calculated individual pipe flow = 368.017(CFS)
Normal flow depth in pipe = 52.97(In.)
Flow top width inside pipe = 52.55(In.)
Critical Depth = 61.10(In.)
'^ Pipe flow velocity = 18.01(Ft /s)
�j Travel time through pipe = 0.22 min.
Time of concentration (TC) = 21.46 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 125.100 to Point /Station 116.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 163.500(Ac.)
Runoff from this stream = 368.017(CFS)
Time of concentration = 21.46 min.
Rainfall intensity = 2.817(In /Hr)
Area averaged loss rate (Fm) = 0.3335(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4248
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station
114.000 to Point /Station 114.100
* * ** INITIAL AREA EVALUATION * * **
COMMERCIAL subarea type
Decimal fraction soil group A
= 1.000
Decimal fraction soil group B
= 0.000
Decimal fraction soil group C
= 0.000
Decimal fraction soil group D
= 0.000
SCS curve number for soil(AMC
2) = 32.00
Adjusted SCS curve number for
Pervious ratio(Ap) = 0.1000
AMC 3 = 52.00
Max loss rate(Fm)= 0.079(In /Hr)
Initial subarea data:
Initial area flow distance =
1000.000(Ft.)
Top (of initial area) elevation = 1304.500(Ft.)
Bottom (of initial area) elevation = 1295.400(Ft.)
Difference in elevation =
9.100(Ft.)
Slope = 0.00910 s( %)=
0.91
7
h
TC = k(0.304) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 12.333 min.
Rainfall intensity = 3.927(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.882
Subarea runoff = 19.052(CFS)
Total initial stream area = 5.500(Ac.)
Pervious area fraction = 0.100
Initial area Fm value = 0.079(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 114.100 to Point /Station 115.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
F
irr
Top of street segment elevation = 1295.400(Ft.)
End of street segment elevation = 1293.000(Ft.)
Length of street segment = 450.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
rational method)(Q =KCIA) is C = 0.880
Subarea runoff = 7.044(CFS) for 2.900(Ac.)
Total runoff = 26.096(CFS) Total area = 8.40(Ac.)
Area averaged Fm value = 0.079(In /Hr)
Street flow at end of street = 26.096(CFS)
Half street flow at end of street = 13.048(CFS)
Depth of flow = 0.580(Ft.)
Average velocity = 3.184(Ft /s)
Note: depth of flow exceeds top of street crown.
Flow width (from curb towards crown)= 18.000(Ft.)
24.074(CFS)
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
Rainfall intensity = 3.530(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [2] side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.566(Ft.)
Average velocity = 3.129(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 17.802(Ft.)
Flow velocity = 3.13(Ft /s)
Travel time = 2.40 min. TC = 14.73 min.
Adding area flow to street
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Ad'7
usted SCS curve number for AMC 3 = 52.00
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 115.100 to Point /Station 116.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
r'/
F
e
Top of street segment elevation = 1293.000(Ft.)
End of street segment elevation = 1286.400(Ft.)
Length of street segment = 400.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on (1) side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.719(Ft.)
Average velocity = 5.826(Ft/s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property =
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 25.455(Ft.)
Flow velocity = 5.83(Ft /s)
Travel time = 1.14 min. TC = 15.87 min.
Adding area flow to street
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Ad'usted SCS curve number for AMC 3 = 52.00
42.095(CFS)
2.62(Ft.)
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
Rainfall intensity = 3.375(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
n; d
rational method)(Q =KCIA) is C = 0.879
Subarea runoff = 29.390(CFS) for 10.300(Ac.)
Total runoff = 55.486(CFS) Total area = 18.70(Ac.)
Area averaged Fm value = 0.079(In /Hr)
Street flow at end of street = 55.486(CFS)
Half street flow at end of street = 55.486(CFS)
Depth of flow = 0.783(Ft.)
Average velocity = 6.017(Ft /s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 5.81(Ft.)
Flow width (from curb towards crown)= 28.646(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 115.100 to Point /Station 116.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
�1
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 18.700(Ac.)
Runoff from this stream = 55.486(CFS)
Time of concentration = 15.87 min.
Rainfall intensity = 3.375(In /Hr)
Area averaged loss rate (Fm) = 0.0785(In /Hr)
Area averaged Pervious ratio (Ap) = 0.1000
Summary of stream data:
Stream Flow rate TC
No. (CFS) (min)
Rainfall Intensity
( In /Hr)
�:z
1
2
Qmax(1)
368.017 21.46
55.486 15.87
2.817
3.375
1.000 * 1.000 * 368.017) +
0.831 * 1.000 * 55.486) + = 414.102
Qmax(2) _
1.225 * 0.740 * 368.017) +
1.000 * 1.000 * 55.486) + = 388.942
Total of 2 streams to confluence:
Flow rates before confluence point:
368.017 55.486
Maximum flow rates at confluence using above data:
414.102 388.942
Area of streams before confluence:
+! 163.500 18.700
Effective area values after confluence:
182.200 139.643
s* Results of confluence:
Total flow rate = 414.102(CFS)
it Time of concentration = 21.460 min.
Effective stream area after confluence = 182.200(Ac.)
Study area average Pervious fraction(Ap) = 0.391
Study area average soil loss rate(Fm) = 0.307(In /Hr)
Study area total (this main stream) = 182.20(Ac.)
W +++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 126.000 to Point /Station 116.100
* * ** SUBAREA FLOW ADDITION * * **
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
j Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
id Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= .079(In /Hr)
Time of concentration = 21.46 min.
�• Rainfall intensity = 2.817(In /Hr) for a 100.0 ear storm
Effective runoff coefficient used for area,(total a a with modified
rational method)(Q =KCIA) is C = 0.888
Subarea runoff = 9.727(CFS) for 5.000(Ac.
Total runoff = 423.830(CFS) Total area = 187.20(Ac.)
Area averaged Fm value = 0.301(In /Hr)
++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++ + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 116.100 to oint /Station 118.100
* * ** PIPEFLOW TRAVEL TIME (Program a im ed size) * * **
Upstream point /station elevation = V128 (Ft.)
Downstream point /station elevation .50(Ft.).-
Pipe length = 230.00(Ft.) Manni = 0.
No. of pipes = 1 Required pipe flow = 423.830(CFS)
Nearest computed pipe diameter = 63.00(In.)
Calculated individual pipe flow = 423.830(CFS)
Normal flow depth in pipe = 49.97(In.)
Flow top width inside pipe = 51.04(In.)
Critical depth could not be calculated.
Pipe flow velocity = 23.02(Ft /s)
73
Travel time through pipe = 0.17 min.
Time of concentration (TC) = 21.63 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 116.100 to Point /Station 118.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 187.200(Ac.)
Runoff from this stream = 423.830(CFS)
Time of concentration = 21.63 min.
Rainfall intensity = 2.804(In /Hr)
Area averaged loss rate (Fm) = 0.3012(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3836
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 117.000 to Point /Station 117.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
i Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
'fop (of initial area) elevation = 1294.000(Ft.)
Bottom (of initial area) elevation = 1285.300(Ft.)
Difference in elevation = 8.700(Ft.)
Slope = 0.00870 s( %)= 0.87
TC = k(0.389) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 15.924 min.
Rainfall intensity = 3.369(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.795
Subarea runoff = 17.680(CFS)
Total initial stream area = 6.600(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 117.100 to Point /Station 118.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1285.300(Ft.)
End of street segment elevation = 1283.500(Ft.)
Length of street segment = 600.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [2] side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
`7'
ri
F'
Effective runoff coe icie
rational method)(Q =KCIA) is C = 0.780
Subarea runoff = 9.016(CFS) for 5.000(Ac.)
Total runoff = 26.696(CFS) Total area = 11.60(Ac.)
Area averaged Fm value = 0.393(In /Hr)
Street flow at end of street = 26.696(CFS)
Half street flow at end of street = 13.348(CFS)
Depth of flow = 0.638(Ft.)
Average velocity = 2.600(Ft /s)
Note: depth of flow exceeds top of street crown.
Flow width (from curb towards crown)= 18.000(Ft.)
24.377(CFS)
Adjusted SCS curve
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 2.950(In /Hr) for a 100.0 year storm
ff' ' nt used for area (total area with modified
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.620(Ft.)
Average velocity = 2.532(Ft/s)
Note: depth of flow exceeds top of street crown.
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 18.000(Ft.)
Flow velocity = 2.53(Ft /s)
Travel time = 3.95 min. TC = 19.87 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A•= 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
number for AMC 3 = 52.00
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 117.100 to Point /Station 118.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 11.600(Ac.)
Runoff from this stream = 26.696(CFS)
Time of concentration = 19.87 min.
Rainfall intensity = 2.950(In /Hr)
Area averaged loss rate (Fm) = 0.3926(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC
No. (CFS) (min)
Rainfall Intensity
( In /Hr)
1
423.830
21.63
2.804
2
26.696
19.87
2.950
Qmax (1)
_
1.000
* 1.000 *
423.830)
+
0.943
* 1.000 *
26.696)
+ = 449.003
Qmax(2)
_
1.058
* 0.919 *
423.830)
+ .
1.000
* 1.000 *
26.696)
+ = 438.874
Total of 2 streams to confluence:
Flow rates before confluence point:
423.830 26.696
Maximum flow rates at confluence using above data:
449.003 438.874
Area of streams before confluence:
75
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 118.100 to Point /Station 120.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1283.50(Ft.)
Downstream point /station elevation = 1276.50(Ft.)
Pipe length = 346.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 449.003(CFS)
Nearest computed pipe diameter = 63.00(In.)
Calculated individual pipe flow = 449.003(CFS)
Normal flow depth in pipe = 56.62(In.)
Flow top width inside pipe = 38.00(In.)
Critical depth could not be calculated.
Pipe flow velocity = 21.92(Ft /s)
Travel time through pipe = 0.26 min.
Time of concentration (TC) = 21.89 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 118.100 to Point /Station 120.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 198.800(Ac.)
Runoff from this stream = 449.003(CFS)
Time of concentration = 21.89 min.
Rainfall intensity = 2.784(In /Hr)
Area averaged loss rate (Fm) = 0.3065(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3904
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 119.000 to Point /Station 119.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1287.000(Ft.)
Bottom (of initial area) elevation = 1280.000(Ft.)
Difference in elevation = 7.000(Ft.)
Slope = 0.00700 s(%)= 0.70
TC = k(0.389) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 16.631 min.
Rainfall intensity = 3.282(In /Hr) for a 100.0 year storm
187.200 11.600
Effective area values after confluence:
198.800 183.627
Results of confluence:
Total flow rate = 449.003(CFS)
Time of concentration = 21.626 min.
Effective stream area after confluence =
Study area average Pervious fraction(Ap)
198.800(Ac.)
= 0.390
Study area average soil loss rate(Fm) =
0.307(In /Hr)
Study area total (this main stream) =
198.80(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 118.100 to Point /Station 120.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1283.50(Ft.)
Downstream point /station elevation = 1276.50(Ft.)
Pipe length = 346.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 449.003(CFS)
Nearest computed pipe diameter = 63.00(In.)
Calculated individual pipe flow = 449.003(CFS)
Normal flow depth in pipe = 56.62(In.)
Flow top width inside pipe = 38.00(In.)
Critical depth could not be calculated.
Pipe flow velocity = 21.92(Ft /s)
Travel time through pipe = 0.26 min.
Time of concentration (TC) = 21.89 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 118.100 to Point /Station 120.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 198.800(Ac.)
Runoff from this stream = 449.003(CFS)
Time of concentration = 21.89 min.
Rainfall intensity = 2.784(In /Hr)
Area averaged loss rate (Fm) = 0.3065(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3904
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 119.000 to Point /Station 119.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1287.000(Ft.)
Bottom (of initial area) elevation = 1280.000(Ft.)
Difference in elevation = 7.000(Ft.)
Slope = 0.00700 s(%)= 0.70
TC = k(0.389) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 16.631 min.
Rainfall intensity = 3.282(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.792
Subarea runoff = 13.004(CFS)
Total initial stream area = 5.000(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 119.100 to Point /Station 120.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1280.000(Ft.)
End of street segment elevation = 1276.500(Ft.)
*� Length of street segment = 600.000(Ft.)
Height of curb above gutter flowline 8.0(In.)
Width of half street (curb to crown) = 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
go
W
�I
rational method)(Q =KCIA) is C = 0.780
Subarea runoff = 10.053(CFS) for 5.000(Ac.)
Total runoff = 23.057(CFS) Total area = 10.00(Ac.)
Area averaged Fm value = 0.393(In /Hr)
Street flow at end of street = 23.057(CFS)
Half street flow at end of street = 11.528(CFS)
Depth of flow = 0.550(Ft.)
Average velocity = 3.225(Ft/s)
Flow width (from curb towards crown)= 17.022(Ft.)
19.506(CFS)
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 2.954(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (total area with modified
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [2) side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.522(Ft.)
Average velocity = 3.136(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 15.596(Ft.)
Flow velocity = 3.14(Ft /s)
Travel time = 3.19 min. TC = 19.82 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 119.100 to Point /Station 120.100
* * ** CONFLUENCE OF MINOR STREAMS * * ** .
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 10.000(Ac.)
Runoff from this stream = 23.057(CFS)
Time of concentration = 19.82 min.
7 7
Rainfall intensity = 2.954(In /Hr)
Area averaged loss rate'(Fm) = 0.3926(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In /Hr)
1 449.003 21.89 2.784
�A 2 23.057 19.82 2.954
Qmax (1) _
1.000 * 1.000 * 449.003) +
0.933 * 1.000 * 23.057) + = 470.521
Qmax(2) _
1.069 * 0.905 * 449.003) +
1.000 * 1.000 * 23.057) + = 457.663
Total of 2 streams to confluence:
Flow rates before confluence point:
449.003 23.057
Maximum flow rates at confluence using above data:
470.521 457.663
Area of streams before confluence:
198.800 10.000
Effective area values after confluence:
208.800 190.007
Results of confluence:
Total flow rate = 470.521(CFS)
Time of concentration = 21.889 min.
Effective stream area after confluence = 208.800(Ac.)
Study area average Pervious fraction(Ap) = 0.396
Study area average soil loss rate(Fm) = 0.311(In /Hr)
Study area total (this main stream) = 208.80(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 120.100 to Point /Station 121.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
k'
Upstream point /station elevation = 1276.50(Ft.)
Downstream point /station elevation = 1270.50(Ft.)
Pipe length = 400.00(Ft.) Manning's N = 0.013
W No. of pipes = 1 Required pipe flow = 470.521(CFS)
Nearest computed pipe diameter 69.00(In.)
Calculated individual pipe flow = 470.521(CFS)
Normal flow depth in pipe = 57.56(In.)
Flow top width inside pipe = 51.32(In.)
Critical depth could not be calculated.
Pipe flow velocity = 20.31(Ft /s)
Travel time through pipe = 0.33 min.
Time of concentration (TC) = 22.22 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 120.100 to Point /Station 121.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 208.800(Ac.)
Runoff from this stream = 470.521(CFS)
Time of concentration = 22.22 min.
Rainfall intensity = 2.759(In /Hr)
Area averaged loss rate (Fm) = 0.3107(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3957
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 121.000 to Point /Station 121.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1277.000(Ft.)
�y Bottom (of initial area) elevation = 1270.500(Ft.)
Difference in elevation = 6.500(Ft.)
�w Slope = 0.00650 s( %)= 0.65
TC = k(0.389) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 16.880 min.
Rainfall intensity = 3.253(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.791
Subarea runoff = 15.705(CFS)
Total initial stream area = 6.100(Ac.)
Pervious area fraction = 0.500
ew Initial area Fm value = 0.393(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 121.000 to Point /Station 121.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 6.100(Ac.)
Runoff from this stream = 15.705(CFS)
Time of concentration = 16.88 min.
Rainfall intensity = 3.253(In /Hr)
Area averaged loss rate (Fm) = 0.3926(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In /Hr)
1 470.521 22.22 2.759
2 15.705 16.88 3.253
Qmax(1) _
1.000 * 1.000 * 470.521) +
0.827 * 1.000 * 15.705) + = 483.512
Qmax(2) _
1.202 * 0.760 * 470.521) +
1.000 * 1.000 * 15.705) + = 445.384
Total of 2 streams to confluence:
Flow rates before confluence point:
470.521 15.705
Maximum flow rates at confluence using above data:
483.512 445.384
Area of streams before confluence:
208.800 6.100
r7�
t�
y
t
Effective area values after confluence:
214.900 164.736
Results of confluence:
Total flow rate = 483.512(CFS)
Time of concentration = 22.218 min.
Effective stream area after confluence = 214.900(Ac.)
Study area average Pervious fraction(Ap) = 0.399
Study area average soil loss rate(Fm) = 0.313(In /Hr)
Study area total (this main stream) = 214.90(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 121.100 to Point /Station 121.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 214.900(Ac.)
Runoff from this stream = 483.512(CFS)
Time of concentration = 22.22 min.
Rainfall intensity = 2.759(In /Hr)
Area averaged loss rate (Fm) = 0.3130(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3986
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 127.000 to Point /Station 121.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1280.000(Ft.)
Bottom (of initial area) elevation = 1270.500(Ft.)
Difference in elevation = 9.500(Ft.)
Slope = 0.00950 s( %)= 0.95
TC = k(0.389) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 15.646 min.
Rainfall intensity = 3.405(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.796
Subarea runoff = 9.760(CFS)
Total initial stream area = 3.600(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 127.000 to Point /Station 121.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 3.600(Ac.)
Runoff from this stream =, 9.760(CFS)
Time of concentration = 15.65 min.
Rainfall intensity = 3.405(In /Hr)
Area averaged loss rate (Fm) = 0.3926(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In /Hr)
1 483.512 22.22 2.759
2 9.760 15.65 3.405
Qmax(1) _
1.000 * 1.000 * 483.512) +
0.786 * 1.000 * 9.760) + = 491.178
Qmax(2) _
+r� 1.264 * 0.704 * 483.512) +
1.000 * 1.000 * 9.760) + = 440.197
Total of 2 streams to confluence:
Flow rates before confluence point:
483.512 9.760
Maximum flow rates at confluence using above data:
491.178 440.197
Area of streams before confluence:
214.900 3.600
Effective area values after confluence:
218.500 154.937
Results of confluence:
�•. Total flow rate = 491.178(CFS)
Time of concentration = 22.218 min.
Effective stream area after confluence = 218.500(Ac.)
Study area average Pervious fraction(Ap) = 0.400
Study area average soil loss rate(Fm) = 0.314(In /Hr)
Study area total (this main stream) = 218.50(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 121.100 to Point /Station 123.100
* ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
�j Upstream point /station elevation = 1270.50(Ft.)
Downstream point /station elevation = 1266.70(Ft.)
Pipe length = 200.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 491.178(CFS)
irr Nearest computed pipe diameter = 66.00(In.)
Calculated individual pipe flow = 491.178(CFS)
Normal flow depth in pipe = 58.87(In.)
Flow top width inside pipe = 40.96(In.)
Critical depth could not be calculated.
Pipe flow velocity = 21.96(Ft /s)
Travel time through pipe = 0.15 min.
Time of concentration (TC) = 22.37 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 121.100 to Point /Station 123.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 218.500(Ac.)
Runoff from this stream = 491.178(CFS)
Time of concentration = 22.37 min.
Rainfall intensity = 2.748(In /Hr)
Area averaged loss rate (Fm) = 0.3143(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4003
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 122.000 to Point /Station 122.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1276.000(Ft.)
Bottom (of initial area) elevation = 1268.300(Ft.)
Difference in elevation = 7.700(Ft.)
Slope = 0.00770 s( %)= 0.77
TC = k(0.389) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 16.317 min.
Rainfall intensity = 3.320(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.794
Subarea runoff = 17.916(CFS)
Total initial stream area = 6.800(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
0
0
�i
H
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 122.100 to Point /Station 123.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1268.300(Ft.)
End of street segment elevation = 1266.700(Ft.)
Length of street segment = 250.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [2] side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 23.186(CFS)
Depth of flow = 0.543(Ft.)
Average velocity = 3.355(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 16.667(Ft.)
Flow velocity = 3.35(Ft /s)
Travel time = 1.24 min. TC = 17.56 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Rainfall intensity = 3.177(In/Hr) for a 100.0 year storm
t/z
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.789
Subarea runoff = 9.149(CFS) for 4.000(Ac.)
Total runoff = 27.065(CFS) Total area = 10.80(Ac.)
Area averaged Fm value = 0.393(In /Hr)
Street flow at end of street = 27.065(CFS)
Half street flow at end of street = 13.533(CFS)
Depth of flow = 0.571(Ft.)
Average velocity = 3.444(Ft/s)
Note: depth of flow exceeds top of street crown.
'J Flow width (from curb towards crown)= 18.000(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 122.100 to Point /Station 123.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 10.800(Ac.)
Runoff from this stream = 27.065(CFS)
Time of concentration = 17.56 min.
Rainfall intensity = 3.177(In /Hr)
Area averaged loss rate (Fm) = 0.3926(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
am Process from Point /Station 128.000 to Point /Station 123.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
6W Top (of initial area) elevation = 1280.000(Ft.)
Bottom (of initial area) elevation = 1266.700(Ft.)
Difference in elevation = 13.300(Ft.)
Slope = 0.01330 s(%)= 1.33
TC = k(0.389) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 14.628 min. -
Rainfall intensity = 3.545(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C 0.800
Subarea runoff = 24.117(CFS)
Total initial stream area = 8.500(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 128.000 to Point /Station 123.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 3
Stream flow area = 8.500(Ac.)
Runoff from this stream = 24.117(CFS)
Time of concentration = 14.63 min.
Rainfall intensity = 3.545(In /Hr)
Area averaged loss rate (Fm) = 0.3926(In /Hr)
g-3
Fl
Kv]
0
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In /Hr)
1.328 * 0.654 * 491.178) +
1.132 * 0.833 * 27.065) +
1.000 * 1.000 * 24.117) + = 476.116
Total of 3 streams to confluence:
Flow rates before confluence point:
491.178 27.065 24.117
Maximum flow rates at confluence using above data:
532.084 501.996 476.116
Area of streams before confluence:
218.500 10.800 8.500
Effective area values after confluence:
237.800 190.817 160.379
Results of confluence:
Total flow rate = 532.084(CFS)
Time of concentration = 22.369 min.
Effective stream area after confluence = 237.800(Ac.)
Study area average Pervious fraction(Ap) = 0.408
Study area average soil loss rate(Fm) = 0.321(In /Hr)
Study area total (this main stream) = 237.80(Ac.)
End of computations, total study area = 237.80 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Note: These figures do not consider reduced effective area
effects caused by confluences in the rational equation.
Area averaged pervious area fraction(Ap) = 0.408
Area averaged SCS curve number = 32.0
1
491.178
22.37
2.748
2
27.065
17.56
3.177
3
24.117
14.63
3.545
Qmax (1)
=
1.000
*
1.000
*
491.178)
+
0.846
*
1.000
*
27.065)
+
0.747
*
1.000
*
24.117)
+ = 532.084
Qmax(2)
=
1.177
*
0.785
*
491.178)
+
1.000
*
1.000
*
27.065)
+
0.883
*
1.000
*
24.117)
+ = 501.996
Qmax(3)
=
San Bernardino County Rational Hydrology Program
(Hydrology Manual Date - August 1986)
Civi1CADD /Civi1DESIGN Engineering Software, (c) 1990 Version 2.3
-------- Rational - Hydrology - Study - - - - -- Date_ 3/19/91
-- -
HYDROLOGY ANALYSIS FOR CITRUS AVE STORM DRAIN
Q 100 YEAR
IN THE CITY OF FONTANA COUNTY OF SAN BERNARDINO
FILE NAME RAT3 J.N. 90065
------------------------------------------------------------------------
.,� * * * * * * * ** Hydrology Study Control Information * * * * * * * * **
Rational hydrology study storm event year is 100.0
10 Year storm 1 hour rainfall = 1.010(In.)
100 Year storm 1 hour rainfall = 1.520(In.)
Computed rainfall intensity:
Storm year = 100.00 1 hour rainfall p = 1.520(In.)
Slope used for rainfall intensity curve b = 0.6000
Soil antecedent moisture condition (AMC) = 3
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 123.100 to Point /Station 123.100
* * ** USER DEFINED FLOW INFORMATION AT A POINT * * **
Soil classification AP and SCS values input by user
USER INPUT of soil data for subarea
$CS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.4080 Max loss rate(Fm)= 0.320(In /Hr)
Rainfall intensity = 2.747(In /Hr) for a 100.0 year storm
User specified values are as follows:
TC = 22.37 min. Rain intensity = 2.75(In /Hr)
Total area = 237.80(Ac.) Total runoff = 532.08(CFS)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 123.100 to Point /Station 130.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1266.70(Ft.)
Downstream point /station elevation = 1254.90(Ft.)
Pipe length = 820.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 532.080(CFS)
Nearest computed pipe diameter = 72.00(In.)
Calculated individual pipe flow = 532.080(CFS)
Normal flow depth in pipe = 62.62(In.)
Flow top width inside pipe = 48.46(In.)
Critical depth could not be calculated.
Pipe flow velocity = 20.37(Ft /s)
Travel time through pipe = 0.67 min.
Time of concentration (TC) = 23.04 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 123.100 to Point /Station 130.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 237.800(Ac.)
Runoff from this stream = 532.080(CFS)
Time of concentration = 23.04 min.
Rainfall intensity = 2.699(In /Hr)
Area averaged loss rate (Fm) = 0.3203(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4080
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 131.000 to Point /Station 130.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance = 900.000(Ft.)
Top (of initial area) elevation = 1266.000(Ft.)
Bottom (of initial area) elevation = 1254.900(Ft.)
Difference in elevation = 11.100(Ft.)
Slope = 0.01233 s( %)= 1.23
TC = k(0.389) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 14.237 min.
Rainfall intensity = 3.603(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.802
Subarea runoff = 12.714(CFS)
Total initial stream area = 4.400(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
i
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 131.000 to Point /Station 130.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
W Stream flow area = 4.400(Ac.)
Runoff from this stream = 12.714(CFS)
Time of concentration = 14.24 min.
Rainfall intensity = 3.603(In /Hr)
Area averaged loss rate (Fm) = 0.3926(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station
98.000 to Point /Station 130.100
* * ** INITIAL AREA EVALUATION
* * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A
= 1.000
Decimal fraction soil group B
= 0.000
Decimal fraction soil group C
= 0.000
Decimal fraction soil group D
= 0.000
SCS curve number for soil(AMC
2) = 32.00
Adjusted SCS curve number for
AMC 3 = 52.00
Pervious ratio(Ap) = 0.5000
Max loss rate(Fm)= 0.393(In /Hr)
Initial subarea data:
Initial area flow distance =
820.000(Ft.)
Top (of initial area) elevation = 1266.000(Ft.)
Bottom (of initial area) elevation = 1254.900(Ft.)
Difference in elevation = 11.100(Ft.)
Slope = 0.01354 s(%)= 1.35
TC = k(0.389) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 13.464 min.
Rainfall intensity = 3.726(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.805
Subarea runoff = 7.500(CFS)
Total initial stream area = 2.500(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.393(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 98.000 to Point /Station 130.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 3
Stream flow area = 2.500(Ac.)
Runoff from this stream = 7.500(CFS)
Time of concentration = 13.46 min.
Rainfall intensity = 3.726(In /Hr)
Area averaged loss rate (Fm) = 0.3926(In /Hr)
bw Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In /Hr)
1 532.080 23.04 2.699
2 12.714 14.24 3.603
3 7.500 13.46 3.726
Qmax(1) =
1.000 * 1.000 * 532.080) +
0.718 * 1.000 * 12.714) +
0.692 * 1.000 * 7.500) + = 546.404
Qmax(2) _
1.380 * 0.618 * 532.080) +
1.000 * 1.000 * 12.714) +
0.963 * 1.000 * 7.500) + = 473.647
+� Qmax(3) _
1.432 * 0.584 * 532.080) +
1.038 * 0.946 * 12.714) +
1.000 * 1.000 * 7.500) + = 465.096
Total of 3 streams to confluence:
Flow rates before confluence point:
532.080 12.714 7.500
Maximum flow rates at confluence using above data:
546.404 473.647 465.096
Area of streams before confluence:
237.800 4.400 2.500
Effective area values after confluence:
244.700 153.841 145.620
Results of confluence:
Total flow rate = 546.404(CFS)
Time of concentration = 23.041 min.
3 Effective stream area after confluence = 244.700(Ac.)
Study area average Pervious fraction(Ap) = 0.411
Study area average soil loss rate(Fm) = 0.322(In /Hr)
3 Study area total (this main stream) = 244.70(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
3 ;�� 7
Process from Point /Station 98.000 to Point /Station 130.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 244.700(Ac.)
Runoff from this stream = 546.404(CFS)
Time of concentration = 23.04 min.
Rainfall intensity = 2.699(In /Hr)
Area averaged loss rate (Fm) = 0.3224(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4106
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 129.000 to Point /Station 129.100
* * ** INITIAL AREA EVALUATION * * **
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
�. Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1269.000(Ft.)
Bottom (of initial area) elevation = 1256.700(Ft.)
Difference in .elevation = 12.300(Ft.)
Slope = 0.01230 s(%)= 1.23
TC = k(0.304) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 11.612 min.
Rainfall intensity = 4.072(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.883
Subarea runoff = 35.941(CFS)
Total initial stream area = 10.000(Ac.)
Pervious area fraction = 0.100
Initial area Fm value = 0.079(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 129.100 to Point /Station 130.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1256.700(Ft.)
End of street segment elevation = 1254.900(Ft.)
Length of street segment = 600.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1) side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 49.778(CFS)
Depth of flow = 0.952(Ft.)
Average velocity = 3.077(Ft /s)
Warning: depth of flow exceeds top of curb
D
0
7
1
�l
0
rational method)(Q =KCIA) is C = 0.880
Subarea runoff = 18.748(CFS) for 7.700(Ac.)
Total runoff = 54.688(CFS) Total area = 17.70(Ac.)
Area averaged Fm value = 0.079(In /Hr)
Street flow at end of street = 54.688(CFS)
Half street flow at end of street = 54.688(CFS)
Depth of flow = 0.975(Ft.)
Average velocity = 3.180(Ft /s)
Warning: depth of flow exceeds top of curb
Note: depth of flow exceeds top of street crown.
Distance that curb overflow reaches into property = 15.44(Ft.)
Flow width (from curb towards crown)= 32.000(Ft.)
14.28 (Ft.)
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
Rainfall intensity = 3.512(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
Note: depth of flow exceeds top of street crown.
Distance that curb overflow reaches into property =
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 32.000(Ft.)
Flow velocity = 3.08(Ft /s)
Travel time = 3.25 min. TC = 14.86 min.
Adding area flow to street
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 129.100 to Point /Station 130.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 17.700(Ac.)
Runoff from this stream = 54.688(CFS)
Time of concentration = 14.86 min.
Rainfall intensity = 3.512(In /Hr)
Area averaged loss rate (Fm) = 0.0785(In /Hr)
Area averaged Pervious ratio (Ap) = 0.1000
Summary of stream data:
Stream Flow rate TC
No. (CFS) (min)
Rainfall Intensity
(In /Hr)
1
546.404
23.04
2.699
2
54.688
14.86
3.512
Qmax (1)
_
1.000
* 1.000 *
546.404)
+
0.763
* 1.000 *
54.688)
+ = 588.152
Qmax(2)
_
1.342
* 0.645 *
546.404)
+
1.000
* 1.000 *
54.688)
+ = 527.573
Total of 2 streams to confluence:
Flow rates before confluence point:
546.404 54.688
Maximum flow rates at confluence using above data:
588.152 527.573
Area of streams before confluence:
244.700 17.700
E
�rll`
iki
r-
L
!- 3
6,
iW
Fl
�r l
Effective area values after confluence:
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 130.100 to Point /Station 133.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1254.90(Ft.)
Downstream point /station elevation = 1247.30(Ft.)
Pipe length = 340.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 588.152(CFS)
Nearest computed pipe diameter = 69.00(In.)
Calculated individual pipe flow = 588.152(CFS)
Normal flow depth in pipe = 59.44(In.)
Flow top width inside pipe = 47.68(In.)
Critical depth could not be calculated.
Pipe flow velocity = 24.72(Ft/s)
Travel time through pipe = 0.23 min.
Time of concentration (TC) = 23.27 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 130.100 to Point /Station 133.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 1n normal stream number 1
Stream flow area = 262.400(Ac.)
Runoff from this stream = 588.152(CFS)
Time of concentration = 23.27 min.
Rainfall intensity = 2.683(In /Hr)
Area averaged loss rate (Fm) = 0.3059(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3896
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 132.000 to Point /Station 132.100
* * ** INITIAL AREA EVALUATION * * **
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.157(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1260.000(Ft.)
Bottom (of initial area) elevation = 1251.100(Ft.)
Difference in elevation = 8.900(Ft.)
Slope = 0.00890 s( %)= 0.89
TC = k(0.324) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 13.203 min.
Rainfall intensity = 3.770(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.863
y�
262.400 175.531
Results
of confluence:
Total
flow rate = 588.152(CFS)
Time
of concentration = 23.041
min.
Effective
stream area after
confluence =
262.400(Ac.)
Study
area average Pervious
fraction(Ap)
= 0.390
Study
area average soil loss
rate(Fm) =
0.306(In /Hr)
Study
area total (this main
stream) =
262.40(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 130.100 to Point /Station 133.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1254.90(Ft.)
Downstream point /station elevation = 1247.30(Ft.)
Pipe length = 340.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 588.152(CFS)
Nearest computed pipe diameter = 69.00(In.)
Calculated individual pipe flow = 588.152(CFS)
Normal flow depth in pipe = 59.44(In.)
Flow top width inside pipe = 47.68(In.)
Critical depth could not be calculated.
Pipe flow velocity = 24.72(Ft/s)
Travel time through pipe = 0.23 min.
Time of concentration (TC) = 23.27 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 130.100 to Point /Station 133.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 1n normal stream number 1
Stream flow area = 262.400(Ac.)
Runoff from this stream = 588.152(CFS)
Time of concentration = 23.27 min.
Rainfall intensity = 2.683(In /Hr)
Area averaged loss rate (Fm) = 0.3059(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3896
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 132.000 to Point /Station 132.100
* * ** INITIAL AREA EVALUATION * * **
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.157(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1260.000(Ft.)
Bottom (of initial area) elevation = 1251.100(Ft.)
Difference in elevation = 8.900(Ft.)
Slope = 0.00890 s( %)= 0.89
TC = k(0.324) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 13.203 min.
Rainfall intensity = 3.770(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.863
y�
Subarea runoff = 23.737(CFS)
Total initial stream area = 7.300(Ac.)
Pervious area fraction = 0.200
Initial area Fm value = 0.157(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 132.100 to Point /Station 133.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1251.100(Ft.)
End of street segment elevation = 1247.300(Ft.)
Length of street segment = 550.000(Ft.)
Height of curb above gutter flowline 8.0(In.)
_
Width of half street (curb to crown) 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on (2] side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 31.541(CFS)
Depth of flow = 0.590(Ft.)
Average velocity = 3.679(Ft/s)
im Note: depth of flow exceeds top of street crown.
Streetflow hydraulics at midpoint of street travel:
P" Halfstreet flow width = 18.000(Ft.)
Flow velocity = 3.68(Ft /s)
Travel time = 2.49 min. TC = 15.69 min.
Adding area flow to street
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = ,52.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
j Rainfall intensity = 3.398(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.867
Subarea runoff = 11.902(CFS) for 4.800(Ac.)
Total runoff = 35.639(CFS) Total area = 12.10(Ac.)
Area averaged Fm value = 0.126(In /Hr)
Street flow at end of street = 35.639(CFS)
Half street flow at end of street = 17.819(CFS)
Depth of flow = 0.613(Ft.)
Average velocity = 3.802(Ft /s)
Note: depth of flow exceeds top of street crown.
Flow width (from curb towards crown)= 18.000(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 132.100 to Point /Station 133.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 12.100(Ac.)
Runoff from this stream = 35.639(CFS)
9�
Time of concentration = 15.69 min.
Rainfall intensity = 3.398(In /Hr)
Area averaged loss rate (Fm) = 0.1259(In /Hr)
Area averaged Pervious ratio (Ap) = 0.1603
Summary of stream data:
• Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In /Hr)
1 588.152 23.27 2.683
j 2 35.639 15.69 3.398
Qmax (1) _
1.000 * 1.000 * 588.152) +
0.781 * 1.000 * 35.639) + = 616.001
Qmax(2) _
1.301 * 0.674 * 588.152) +
1.000 * 1.000 * 35.639) + = 551.668
firl
Total of 2 streams to confluence:
Flow rates before confluence point:
588.152 35.639
Maximum flow rates at confluence using above data:
616.001 551.668
Area of streams before confluence:
262.400 12.100
Effective area values after confluence:
274.500 189.074
Results of confluence:
Total flow rate = 616.001(CFS)
Time of concentration = 23.270 min.
Effective stream area after confluence = 274.500(Ac.)
`5 Study area average Pervious fraction(Ap) = 0.380
Study area average soil loss rate(Fm) = 0.298(In /Hr)
Study area total (this main stream) = 274.50(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 133.100 to Point /Station 135.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1247.30(Ft.)
+�* Downstream point /station elevation = 1243.50(Ft.)
Pipe length = 325.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 616.001(CFS)
Nearest computed pipe diameter = 81.00(In.)
IR Calculated individual pipe flow = 616.001(CFS)
Normal flow depth in pipe = 65.16(In.)
Flow top width inside pipe = 64.26(In.)
Critical Depth = 75.08(In.)
Pipe flow velocity = 19.97(Ft/s)
Travel time through pipe = 0.27 min.
Time of concentration (TC) = 23.54 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 133.100 to Point /Station 135.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 274.500(Ac.)
Runoff from this stream = 616.001(CFS)
Time of concentration = 23.54 min.
Rainfall intensity = 2.665(In /Hr)
G��
Area averaged loss rate (Fm) = 0.2980(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3795
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 134.000 to Point /Station 134.100
* * ** INITIAL AREA EVALUATION * * **
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
�+ Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.157(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1255.000(Ft.)
Bottom (of initial area) elevation = 1246.700(Ft.)
Difference in elevation = 8.300(Ft.)
Slope = 0.00830 s( %)= 0.83
0 TC = k(0.324)* (length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 13.388 min.
Rainfall intensity = 3.738(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.862
Subarea runoff = 23.530(CFS)
Total initial stream area = 7.300(Ac.)
Pervious area fraction = 0.200
Initial area Fm value = 0.157(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 134.100 to Point /Station 135.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1246.700(Ft.)
End of street segment elevation = 1243.500(Ft.)
Length of street segment = 550.000(Ft.)
A Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
!^ Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on (2) side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 31.266(CFS)
Depth of flow = 0.604(Ft.)
Average velocity = 3.446(Ft/s)
Note: depth of flow exceeds top of street crown.
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 18.000(Ft.)
Flow velocity = 3.45(Ft /s)
Travel time = 2.66 min. TC = 16.05 min.
Adding area flow to street
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.157(In /Hr)
Rainfall intensity = 3.353(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.858
Subarea runoff = 11.277(CFS) for 4.800(Ac.)
Total runoff = 34.807(CFS) Total area = 12.10(Ac.)
Area averaged Fm value = 0.157(In /Hr)
Street flow at end of street = 34.807(CFS)
Half street flow at end of street = 17.404(CFS)
Depth of flow = 0.625(Ft.)
Average velocity = 3.551(Ft/s)
Note: depth of flow exceeds top of street crown.
Flow width (from curb towards crown)= 18.000(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 134.100 to Point /Station 135.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 1 11 normal stream number 2
Stream flow area = 12.100(Ac.)
Runoff from this stream = 34.807(CFS)
Time of concentration = 16.05 min.
Rainfall intensity = 3.353(In /Hr)
Area averaged loss rate (Fm) = 0.1570(In /Hr)
Area averaged Pervious ratio (Ap) = 0.2000
Summary of stream data:
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Stream Flow rate TIC Rainfall Intensity
No. (CFS) (min)
(In /Hr)
1 616.001 23.54
2.665
2 34.807 16.05
3.353
Qmax (1) _
1.000 * 1.000 * 616.001)
+
0.785 * 1.000 * 34.807)
+ = 643.309
Qmax(2) _
1.291 * 0.682 * 616.001)
+
1.000 * 1.000 * 34.807)
+ = 576.948
Total of 2 streams to confluence:
Flow rates before confluence point:
616.001 34.807
Maximum flow rates at confluence using above data:
643.309 576.948
Area of streams before confluence:
274.500 12.100
Effective area values after confluence:
286.600 199.233
Results of confluence:
Total flow rate = 643.309(CFS)
Time of concentration = 23.541 min.
=
286.600(Ac.)
Effective stream area after confluence
Study area average Pervious fraction(Ap)
soil loss rate(Fm) =
= 0.372
0.292(In /Hr)
Study area average
Study area total (this main stream) =
286.60(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 135.100 to Point /Station 136.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
+�I Upstream point /station elevation = 1243.50(Ft.)
Downstream point /station elevation = 1242.00(Ft.)
Pipe length = 120.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 643.309(CFS)
Nearest computed pipe diameter = 81.00(In.)
Calculated individual pipe flow = 643.309(CFS)
Normal flow depth in pipe = 65.81(In.)
Flow top width inside pipe = 63.23(In.)
Critical Depth = 75.87(In.)
Pipe flow velocity = 20.65(Ft /s)
Travel time through pipe = 0.10 min.
Time of concentration (TC) = 23.64 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 135.100 to Point /Station 136.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 286.600(Ac.)
Runoff from this stream = 643.309(CFS)
+� Time of concentration = 23.64 min.
Rainfall intensity = 2.658(In /Hr)
Area averaged loss rate (Fm) = 0.2920(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3720
{
rri
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 136.000 to Point /Station 136.100
r * * ** INITIAL AREA EVALUATION * * **
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
�i
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
.� Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
w+ Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.079(In /Hr)
�* Initial subarea data:
Initial area flow distance = 750.000(Ft.)
Top (of initial area) elevation = 1254.000(Ft.)
Bottom (of initial area) elevation = 1242.000(Ft.)
Difference in elevation = 12.000(Ft.)
Slope = 0.01600 s( %)= 1.60
TC = k(0.304) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 9.819 min.
Rainfall intensity = 4.503(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.884
Subarea runoff = 15.131(CFS)
Total initial stream area = 3.800(Ac.)
Pervious area fraction = 0.100
Initial area Fm value = 0.079(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 136.000 to Point /Station 136.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 3.800(Ac.)
5
jI
J
t
�I
Runoff from this stream
Time of concentration =
Rainfall intensity =
Area averaged loss rate
Area averaged Pervious
Summary of stream data:
Stream Flow rate
No. (CFS)
= 15.131(CFS)
9.82 min.
4.503(In /Hr)
(Fm) = 0.0785(In /Hr)
ratio (Ap) = 0.1000
TC Rainfall Intensity
(min) (In /Hr)
1
643.309
23.64
data:
2.658
2
15.131
9.82
286.600 3.800
4.503
Qmax (1)
_
290.400 122.852
Results of confluence:
1.000
* 1.000 *
643.309)
+
Effective stream area after confluence =
0.583
* 1.000 *
15.131)
+ = 652.131
Qmax(2)
_
290.40(Ac.)
1.780
* 0.415 *
643.309)
+
1.000
* 1.000 *
15.131)
+ = 490.716
Total of 2 streams to confluence:
Flow rates before confluence point:
643.309 15.131
Maximum flow rates at confluence using above
data:
652.131 490.716
Area of streams before confluence:
286.600 3.800
Effective area values after confluence:
290.400 122.852
Results of confluence:
Total flow rate = 652.131(CFS)
Time of concentration = 23.638 min.
Effective stream area after confluence =
290.400(Ac.)
Study area average Pervious fraction(Ap)
= 0.368
Study area average soil loss rate(Fm) =
0.289(In /Hr)
Study area total (this main stream) =
290.40(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 136.100 to Point/Stat 137.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size)
Upstream point /station elevation = 1242.00(Ft.)
Downstream point /station elevation = 1238.50(Ft.)
Pipe length = 150.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 652.131(CFS)
Nearest computed pipe diameter = 72.00(In.)
Calculated individual pipe flow = 652.131(CFS)
Normal flow depth in pipe = 59.53(In.)
Flow top width inside pipe = 54.49(In.)
Critical depth could not be calculated.
Pipe flow velocity = 26.08(Ft /s)
Travel time through pipe = 0.10 min.
Time of concentration (TC) = 23.73 min. _
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 136.100 to Point /Station 137.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 290.400(Ac.)
Runoff from this stream = 652.131(CFS)
Time of concentration = 23.73 min.
76
Rainfall intensity = 2.652(In /Hr)
Area averaged loss rate (Fm) = 0.2892(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3684
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 137.000 to Point /Station 137.100
* * ** INITIAL AREA EVALUATION * * **
w APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.157(In /Hr)
Initial subarea data:
+ Initial area flow distance = 750.000(Ft.)
Top (of initial area) elevation = 1247.000(Ft.)
Bottom (of initial area) elevation = 1238.500(Ft.)
Difference in elevation = 8.500(Ft.)
Slope = 0.01133 s(%)= 1.13
TC = k(0.324) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 11.212 min. -
Rainfall intensity = 4.158(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C 0.866
Subarea runoff = 20.887(CFS)
Total initial stream area = 5.800(Ac.)
Pervious area fraction = 0.200
Initial area Fm value = 0.157(In /Hr)
r
D
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 137.000 to Point /Station 137.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 5.800(Ac.)
Runoff from this stream = 20.887(CFS)
Time of concentration = 11.21 min.
Rainfall intensity = 4.158(In /Hr)
Area averaged loss rate (Fm) = 0.1570(In /Hr)
Area averaged Pervious ratio (Ap) = 0.2000
Summary of stream data:
Stream Flow rate TC
No. (CFS) (min)
Rainfall Intensity
(In /Hr)
1
652.131
23.73
2.652
2
20.887
11.21
4.158
Qmax (1)
_
1.000
* 1.000 *
652.131)
+
0.623
* 1.000 *
20.887)
+ = 665.152
Qmax(2)
_
1.638
* 0.472 *
652.131)
+
1.000
* 1.000 *
20.887)
+ = 525.451
Total of 2 streams to confluence:
Flow rates before confluence point:
652.131 20.887
Maximum flow rates at confluence using above data:
665.152 525.451
'7 /
Area of streams before confluence:
290.400 5.800
Effective area values after confluence:
296.200 142.990
Results of confluence:
Total flow rate = 665.152(CFS)
Time of concentration = 23.734 min.
Effective stream area after confluence = 296.200(Ac.)
Study area average Pervious fraction(Ap) = 0.365
Study area average soil loss rate(Fm) = 0.287(In /Hr)
Study area total (this main stream) = 296.20(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 137.100 to Point /Station 139.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1238.50(Ft.)
Downstream point /station elevation = 1230.60(Ft.)
Pipe length = 660.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 665.152(CFS)
Nearest computed pipe diameter = 81.00(In.)
Calculated individual pipe flow = 665.152(CFS)
Normal flow depth in pipe = 70.69(In.)
Flow top width inside pipe = 54.00(In.)
Critical Depth = 76.38(In.)
Pipe flow velocity = 20.08(Ft /s)
Travel time through pipe = 0.55 min.
Time of concentration (TC) = 24.28 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 137.100 to Point /Station 139.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 296.200(Ac.)
Runoff from this stream = 665.152(CFS)
Time of concentration = 24.28 min.
Rainfall intensity = 2.616(In /Hr)
Area averaged loss rate (Fm) = 0.2867(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3651
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 138.000 to Point /Station 138.100
* * ** INITIAL AREA EVALUATION * * **
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.157(In /Hr)
Initial subarea data:
Initial area flow distance = 750.000(Ft.)
Top (of initial area) elevation = 1242.000(Ft.)
Bottom (of initial area) elevation = 1232.200(Ft.)
Difference in elevation = 9.800(Ft.)
Slope = 0.01307 s( %)= 1.31
TC = k(0.324) *[(length ^3) /(elevation change)] "0.2
Initial area time of concentration = 10.898 min.
Rainfall intensity = 4.230(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.867
Subarea runoff = 21.261(CFS)
Total initial stream area = 5.800(Ac.)
Pervious area fraction = 0.200
Initial area Fm value = 0.157(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 138.100 to Point /Station 139.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1232.200(Ft.)
End of street segment elevation = 1230.600(Ft.)
Length of street segment = 300.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 28.958(CFS)
Depth of flow = 0.763(Ft.)
Average velocity = 3.380(Ft /s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 4.84(Ft.)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 27.670(Ft.)
Flow velocity = 3.38(Ft /s)
Travel time = 1.48 min. TC = 12.38 min.
Adding area flow to street
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.157(In /Hr)
Rainfall intensity = 3.919(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.864
Subarea runoff = 12.596(CFS) for 4.200(Ac.)
Total runoff = 33.857(CFS) Total area = 10.00(Ac.)
Area averaged Fm value = 0.157(In /Hr)
Street flow at end of street = 33.857(CFS)
Half street flow at end of street = 33.857(CFS)
Depth of flow = 0.799(Ft.)
Average velocity = 3.458(Ft/s) •
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 6.62(Ft.)
Flow width (from curb towards crown)= 29.455(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 140.000 to Point /Station 139.100
* * ** SUBAREA FLOW ADDITION * * **
99
{
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Adjusted SCS curve number for AMC 3 = 52.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.157(In /Hr)
Time of concentration = 12.38 min.
Rainfall intensity = 3.919(In /Hr) for a 100.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.864
Subarea runoff = 6.094(CFS) for 1.800(Ac.)
Total runoff = 39.951(CFS) Total area = 11.80(Ac.)
Area averaged Fm value = 0.157(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 140.000 to Point /Station 139.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 11.800(Ac.)
Runoff from this stream = 39.951(CFS)
Time of concentration = 12.38 min.
Rainfall intensity = 3.919(In /Hr)
Area averaged loss rate (Fm) = 0.1570(In /Hr)
Area averaged Pervious ratio (Ap) = 0.2000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In /Hr)
1 665.152 24.28 2.616
2 39.951 12.38 3.919
Qmax (1) =
1.000 * 1.000 * 665.152) +
0.654 * 1.000 * 39.951) + = 691.262
Qmax(2) =
1.560 * 0.510 * 665.152) +
1.000 * 1.000 * 39.951) + = 568.737
Total of 2 streams to confluence:
Flow rates before confluence point:
665.152 39.951
Maximum flow rates at confluence using above data:
691.262 568.737
Area of streams before confluence:
296.200 11.800
Effective area values after confluence:
308.000 162.781
Results of confluence:
Total flow rate = 691.262(CFS)
Time of concentration = 24.282 min.
Effective stream area after confluence = 308.000(Ac.)
Study area average Pervious fraction(Ap) = 0.359
Study area average soil loss rate(Fm) = 0.282(In /Hr)
Study area total (this main stream) = 308.00(Ac.)
End of computations, total study area = 308.00 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Note: These figures do not consider reduced effective area
//O
effects caused by confluences in the rational equation.
Area averaged pervious area fraction(Ap) = 0.359
Area averaged SCS curve number = 32.0
E
r
4"
rri
F
E
Oft
VI
HYDROLOGY STUDY
---------------
WITHOUT OVERFLOW FROM BASELINE AVENUE
-------------------------------------
Q 25 YEAR
-----------
TO BE USED FOR CATCH BASINS DESIGN
,w
k"
k
San Bernardino County Rational Hydrology Program
(Hydrology Manual Date - August 1986)
Civi1CADD /Civi1DESIGN Engineering Software, (c) 1990 Version 2.3
Rational Hydrology Study Date: 3/19/91
------------------------------------------------------------------ - - - - --
Q 25 YEAR
IN THE CITY OF FONTANA COUNTY OF SAN BERNARDINO
DATA TO BE USED IN RAT252 FILE NAME RAT251 J.N. 90065
HYDROLOGY ANALYSIS FOR CITRUS AVE STORM DRAIN
* * * * * * * ** Hydrology Study Control Information * * * * * * * * **
Nl
,
J
K
0
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 100.000 to Point /Station 100.100
* * ** INITIAL AREA EVALUATION * * **
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.098(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1396.700(Ft.)
Bottom (of initial area) elevation = 1387.000(Ft.)
Difference in elevation = 9.700(Ft.)
Slope = 0.00970 s( %)= 0.97
TC = k(0.304) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 12.176 min.
Rainfall intensity = 3.158(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.872
Subarea runoff = 13.771(CFS)
Total initial stream area = 5.000(Ac.)
Pervious area fraction = 0.100
Initial area Fm value = 0.098(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 100.100 to Point /Station 101.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1387.000(Ft.)
End of street segment elevation = 1381.500(Ft.)
Length of street segment = 330.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
/v3
Rational hydrology study
storm event year is 25.0
on
10 Year storm 1 hour
rainfall =
1.010(In.)
100 Year storm 1 hour
rainfall =
1.520(In.)
Computed rainfall intensity:
Storm year = 25.00
1 hour rainfall
p = 1.213(In.)
Slope used for rainfall
intensity curve
b = 0.6000
Soil antecedent moisture
condition (AMC)
= 2
Nl
,
J
K
0
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 100.000 to Point /Station 100.100
* * ** INITIAL AREA EVALUATION * * **
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.098(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1396.700(Ft.)
Bottom (of initial area) elevation = 1387.000(Ft.)
Difference in elevation = 9.700(Ft.)
Slope = 0.00970 s( %)= 0.97
TC = k(0.304) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 12.176 min.
Rainfall intensity = 3.158(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.872
Subarea runoff = 13.771(CFS)
Total initial stream area = 5.000(Ac.)
Pervious area fraction = 0.100
Initial area Fm value = 0.098(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 100.100 to Point /Station 101.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1387.000(Ft.)
End of street segment elevation = 1381.500(Ft.)
Length of street segment = 330.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
/v3
J
r
i�
.A
-0
0
Street flow is on [1] side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.561(Ft.)
Average velocity = 5.504(Ft /s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 17.537(Ft.)
Flow velocity = 5.50(Ft /s)
Travel time = 1.00 min. TC = 13.18 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
20.657(CFS)
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Rainfall intensity = 3.012(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.812
Subarea runoff = 10.698(CFS) for 5.000(Ac.)
Total runoff = 24.469(CFS) Total area = 10.00(Ac.)
Area averaged Fm value = 0.293(In /Hr)
Street flow at end of street = 24.469(CFS)
Half street flow at end of street = 24.469(CFS)
Depth of flow = 0.592(Ft.)
Average velocity = 5.663(Ft/s)
Flow width (from curb towards crown)= 19.087(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 101.100 to Point /Station 102.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1381.500(Ft.)
End of street segment elevation = 1378.500(Ft.)
Length of street segment = 200.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 28.139(CFS)
Depth of flow = 0.629(Ft.)
Average velocity = 5.553(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 20.953(Ft.)
Flow velocity = 5.55(Ft /s)
Travel time = 0.60 min. TC = 13.78 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489 (In /Hr)
Rainfall intensity = 2.933(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.796
Subarea runoff = 5.883(CFS) for 3.000(Ac.)
Total runoff = 30.352(CFS) Total area = 13.00(Ac.)
Area averaged Fm value = 0.338(In /Hr)
Street flow at end of street = 30.352(CFS)
Half street flow at end of street = 30.352(CFS)
Depth of flow = 0.644(Ft.)
Average velocity = 5.626(Ft/s)
Flow width (from curb towards crown)= 21.719(Ft.)
+++++++++++++++++++++++++++++++++++++++ 1 F 1-- + + + + + + + + + + +..
Process from Point /Station 102.100 to Point /Station 103.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
�* Top of street segment elevation = 1378.500(Ft.)
End of street segment elevation = 1370.500(Ft.)
Length of street segment = 350.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
'Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 42.726(CFS)
Depth of flow = 0.678(Ft.)
Average velocity = 6.938(Ft/s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 0.57(Ft.)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 23.404(Ft.)
Flow velocity = 6.94(Ft /s)
Travel time = 0.84 min. TC = 14.62 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(.Fm)= 0.489(In /Hr)
Rainfall intensity = 2.830(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.771
Subarea runoff = 21.138(CFS) for 10.600(Ac.)
Total runoff = 51.490(CFS) Total area = 23.60(Ac.)
Area averaged Fm value = 0.406(In /Hr)
Street flow at end of street = 51.490(CFS)
Half street flow at end of street = 51.490(CFS)
Depth of flow = 0.728(Ft.)
Average velocity = 6.876(Ft/s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 3.08(Ft.)
Flow width (from curb towards crown)= 25.915(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 103.100 to Point /Station 104.100
STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1370.500(Ft.)
End of street segment elevation = 1352.000(Ft.)
Length of street segment = 960.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 20.000(Ft.)
i Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 68.181(CFS)
Depth of flow = 0.812(Ft.)
Average velocity = 6.632(Ft/s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 7.29(Ft.)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 30.120(Ft.)
+e� Flow velocity = 6.63(Ft /s)
Travel time = 2.41 min. TC = 17.03 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
iw Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Rainfall intensity = 2.582(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.747
Subarea runoff = 23.562(CFS) for 15.300(Ac.)
Total runoff = 75.052(CFS) Total area = 38.90(Ac.)
Area averaged Fm value = 0.439(In /Hr)
Street flow at end of street = 75.052(CFS)
Half street flow at end of street = 75.052(CFS)
Depth of flow = 0.835(Ft.)
Average velocity = 6.735(Ft/s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 8.41(Ft.)
Flow width (from curb towards crown)= 31.239(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 104.100 to Point /Station 105.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
0
OR
ar
Wri
rw
0
�111
Top of street segment elevation = - 1352.000(Ft.)
End of street segment elevation = 1341.000(Ft.)
Length of street segment = 640.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
75.052(CFS)
9.08(Ft.)
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Rainfall intensity = 2.442(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.).
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.848(Ft.)
Average velocity = 6.421(Ft /s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property =
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 31.915(Ft.)
Flow velocity = 6.42(Ft /s)
Travel time = 1.66 min. TC = 18.69 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
rational method)(Q =KCIA) is C = 0.738
Subarea runoff = 0.000(CFS) for 0.000(Ac.)
Total runoff = 75.052(CFS) Total area = 38.90(Ac.)
Area averaged Fm value = 0.439(In /Hr)
Street flow at end of street = 75.052(CFS)
Half street flow at end of street = 75.052(CFS)
Depth of flow = 0.848(Ft.)
Average velocity = 6.421(Ft /s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 9.08(Ft.)
Flow width (from curb towards crown)= 31.915(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 105.000 to Point /Station 105.100
* * ** SUBAREA FLOW ADDITION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Time of concentration = 18.69 min.
Rainfall intensity = 2.442(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.732
Subarea runoff = 28.841(CFS) for 19.200(Ac.)
/a7
Total runoff = 103.892(CFS) Total area = 58.10(Ac.)
Area averaged Fm value = 0.455(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 105.000 to Point /Station 105.100
_. * * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 58.100(Ac.)
Runoff from this stream = 103.892(CFS)
Time of concentration = 18.69 min.
Rainfall intensity = 2.442(In /Hr)
Area averaged loss rate (Fm) = 0.4552(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4656
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 106.000 to Point /Station 106.100
* * ** INITIAL AREA EVALUATION * * **
on RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
0 " Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
"* Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1391.600(Ft.)
Bottom (of initial area) elevation =. 1379.000(Ft.)
Difference in elevation = 12.600(Ft.)
bw Slope = 0.01260 s( %)= 1.26
TC = k(0.389) *[(.length ^3) /(elevation change)] ^0
in Initial area time of concentration = 14.787 min.
Rainfall intensity = 2.811(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.743
Subarea runoff = 9.403(CFS)
Total initial stream area = 4.500(Ac.)
prj Pervious area fraction = 0.500
Initial area Fm value = 0.489(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 106.100 to Point /Station 104.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1379.000(Ft.)
End of street segment elevation = 1352.000(Ft.)
Length of street segment = 1400.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 8.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
D
0
12.955(CFS)
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Rainfall intensity = 2.410(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.472(Ft.)
Average velocity = 5.405(Ft /s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 13.113(Ft.)
Flow velocity = 5.40(Ft /s)
Travel time = 4.32 min. TC = 19.10 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
*� rational method)(Q =KCIA) is C = 0.717
Subarea runoff = 4.258(CFS) for 3.400(Ac.)
Total runoff = 13.661(CFS) Total area = 7.90(Ac.)
Area averaged Fm value = 0.489(In /Hr)
Street flow at end of street = 13.661(CFS)
Half street flow at end of street = 13.661(CFS)
Depth of flow = 0.480(Ft.)
+w Average velocity = 5.455(Ft/s)
Flow width (from curb towards crown)= 13.515(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 104.100 to Point /Station 105.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
J
r
6
Top of street segment elevation = 1352.000(Ft.)
End of street segment elevation = 1341.000(Ft.)
Length of street segment = 640.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on (1] side(s) of the street
Distance from curb to property line = 8.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 14.958(CFS)
Depth of flow = 0.504(Ft.)
Average velocity = 5.282(Ft /s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 14.677(Ft.)
Flow velocity = 5.28(Ft /s)
Travel time = 2.02 min. TC = 21.12 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Rainfall intensity = 2.269(In /Hr) for a 25.0 year storm
/0
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.706
Subarea runoff = 1.401(CFS) for 1.500(Ac.)
Total runoff = 15.061(CFS) Total area = 9.40(Ac.)
Area averaged Fm value = 0.489(In /Hr)
Street flow at end of street = 15.061(CFS)
" Half street flow at end of street = 15.061(CFS)
Depth of flow = 0.505(Ft.)
Average velocity = 5.289(Ft/s)
Flow width (from curb towards crown)= 14.732(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 104.100 to Point /Station 105.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 9.400(Ac.)
Runoff from this stream = 15.061(CFS)
Time of concentration = 21.12 min.
�. Rainfall intensity = 2.269(In /Hr)
Area averaged loss rate (Fm) = 0.4889(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In /Hr)
NW 1 103.892 18.69 2.442
2 15.061 21.12 2.269
Qmax (1) _
1.000 * 1.000 * 103.892) +
1.097 * 0.885 * 15.061) + = 118.513
Qmax(2) _
0.913 * 1.000 * 103.892) +
1.000 * 1.000 * 15.061) + = 109.914
Total of 2 streams to confluence:
Flow rates before confluence point:
go 103.892 15.061
Maximum flow rates at confluence using above data:
118.513 109.914
Area of streams before confluence:
58.100 9.400
Effective area values after confluence:
66.417 67.500
Results of confluence:
Total flow rate = 118.513(CFS)
Time of concentration = 18.690 min.
Effective stream area after confluence = 66.417(Ac.)
Study area average Pervious fraction(Ap) = 0.470
Study area average soil loss rate(Fm) = 0.460(In /Hr)
Study area total (this main stream) = 67.50(Ac.)
++++++++++++++++++++++++++++++++++++++++ + + + + + +' + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 105.100 to Point /Station 109.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1341.00(Ft.)
Downstream point /station elevation = 1329.70(Ft.)
Pipe length = 650.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 118.513(CFS)
& ='
Nearest computed pipe diameter = 42.00(In.)
Calculated individual pipe flow = 118.513(CFS)
Normal flow depth in pipe = 30.94(In.)
Flow top width inside pipe = 37.00(In.)
Critical Depth = 38.87(In.)
Pipe flow velocity = 15.59(Ft/s)
Travel time through pipe = 0.70 min.
Time of concentration (TC) = 19.39 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 109.000 to Point /Station 109.100
* * ** SUBAREA FLOW ADDITION * * **
MIR
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Time of concentration = 19.39 min.
Rainfall intensity = 2.389(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.847
Subarea runoff = 23.488(CFS) for 15.600(Ac.)
Total runoff = . 142.002(CFS) Total area = 82.02(Ac.)
Area averaged Fm value = 0.465(In /Hr)
X11
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 109.100 to Point /Station 110.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1329.70(Ft.)
Downstream point /station elevation = 1313.80(Ft.)
Pipe length = 920.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 142.002(CFS)
Nearest computed pipe diameter = 42.00(In.)
Calculated individual pipe flow = 142.002(CFS)
Normal flow depth in pipe = 38.62(In.)
Flow top width inside pipe = 22.84(In.)
Critical depth could not be calculated.
Pipe flow velocity = 15.33(Ft/s)
Travel time through pipe = 1.00 min.
Time of concentration (TC) = 20.39 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station
110.000 to Point /Station 110.100
* * ** SUBAREA FLOW ADDITION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A =
1.000
Decimal fraction soil group B =
0.000
Decimal fraction soil group C =
0.000
Decimal fraction soil group D =
SCS curve number for soil(AMC 2)
0.000
= 32.00
Pervious ratio(Ap) = 0.5000
Max loss rate(Fm)= 0.489(In /Hr)
Time of concentration = 20.39
min.
Rainfall intensity = 2.318(In
/Hr) for a 25.0 year storm
Effective runoff coefficient used
for area,(total area with modified
rational method)(Q =KCIA) is C =
0.825
Subarea runoff = 18.793(CFS)
for 14.600(Ac.)
Total runoff = 160.794(CFS) Total area = 96.62(Ac.)
Area averaged Fm value = 0.469(In /Hr)
' +++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 110.100 to Point /Station 111.100
' * * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1313.80(Ft.)
Downstream point /station elevation = 1307.70(Ft.)
' Pipe length = 420.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 160.794(CFS)
Nearest computed pipe diameter = 48.00(In.)
' Calculated individual pipe flow = 160.794(CFS)
Normal flow depth in pipe = 36.56(In.)
Flow top width inside pipe 40.90(In.)
Critical Depth = 44.06(In.)
' Pipe flow velocity = 15.64(Ft /s)
Travel time through pipe = 0.45 min.
Time of concentration (TC) = 20.83 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 111.000 to Point /Station 111.100
t * * ** SUBAREA FLOW ADDITION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
'SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Time of concentration = 20.83 min.
Rainfall intensity = 2.288(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.795
Subarea runoff = 52.933(CFS) for 34.300(Ac.)
Total runoff = 213.728(CFS) Total area = 130.92(Ac.)
Area averaged Fm value = 0.474(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 111.100 to Point /Station 112.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
' Upstream point/station elevation = 1307.70(Ft.)
Downstream point /station elevation = 1297.70(Ft.)
Pipe length = 650.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 213.728(CFS)
Nearest computed pipe diameter 51.00(In.)
Calculated individual pipe flow = 213.728(CFS)
Normal flow depth in pipe = 42.84(In.)
' Flow top width inside pipe = 37.39(In.)
Critical Depth = 48.33(In.)
Pipe flow velocity = 16.81(Ft /s)
' Travel time through pipe = 0.64 min.
Time of concentration (TC) = 21.48 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
' Process from Point /Station 112.000 to Point /Station 112.100
* * ** SUBAREA FLOW ADDITION * * **
//Z
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.098(In /Hr)
Time of concentration = 21.48 min.
Rainfall intensity = 2.247(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.794
Subarea runoff = 35.538(CFS) for 20.900(Ac.)
Total runoff = 249.266(CFS) Total area = 151.82(Ac.)
Area averaged Fm value = 0.422(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 112.000 to Point /Station 112.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 151.817(Ac.)
Runoff from this stream = 249.266(CFS)
Time of concentration = 21.48 min.
Rainfall intensity = 2.247(In /Hr)
Area averaged loss rate (Fm) = 0.4224(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4320
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 105.100 to Point /Station 113.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal•fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1341.000(Ft.)
Bottom (of initial area) elevation = 1323.000(Ft.)
Difference in elevation = 18.000(Ft.)
Slope = 0.01800 s( %)= 1.80
TC = k(0.389) *[(length ^3) /(elevation change)]^0.2
Initial area time of concentration = 13.769 min.
Rainfall intensity = 2.934(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.750
Subarea runoff = 5.060(CFS)
Total initial stream area = 2.300(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.489(In /Hr)
+++++++++++++++++++++-+-+++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 113.100 to Point /Station 110.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1323.000(Ft.)
End of street segment elevation = 1313.800(Ft.)
Length of street segment = 570.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
///3
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 8.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 6.271(CFS)
Depth of flow = 0.386(Ft.)
Average velocity = 4.319(Ft /s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 8.800(Ft.)
Flow velocity = 4.32(Ft /s)
Travel time = 2.20 min. TC = 15.97 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Rainfall intensity = 2.684(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.736
Subarea runoff = 1.656(CFS) for 1.100(Ac.)
Total runoff = 6.717(CFS) Total area = 3.40(Ac.)
Area averaged Fm value = 0.489(In /Hr)
Street flow at end of street = 6.717(CFS)
Half street flow at end of street = 6.717(CFS)
Depth of flow = 0.394(Ft.)
Average velocity = 4.397(Ft/s)
Flow width (from curb towards crown)= 9.219(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 110.100 to Point /Station 112.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1313.800(Ft.)
End of street segment elevation = 1297.700(Ft.)
Length of street segment = 1070.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 8.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 8.890(CFS)
Depth of flow = 0.436(Ft.)
Average velocity = 4.555(Ft/s)
Streetflow hydraulics at midpoint of street travel:
k�
e
M
rational method)(Q =KCIA) is C = 0.713
Subarea runoff = 2.679(CFS) for 2.200(Ac.)
Total runoff = 9.395(CFS) Total area = 5.60(Ac.)
Area averaged Fm value = 0.489(In /Hr)
Street flow at end of street = 9.395(CFS)
Half street flow at end of street = 9.395(CFS)
Depth of flow = 0.444(Ft.)
Average velocity = 4.604(Ft /s)
Flow width (from curb towards crown)= 11.675(Ft.)
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Rainfall intensity = 2.353(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
Halfstreet flow width = 11.288(Ft.)
Flow velocity = 4.55(Ft /s)
Travel time = 3.92 min. TC = 19.88 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 110.100 to Point /Station 112.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 5.600(Ac.)
Runoff from this stream = 9.395(CFS)'
Time of concentration = 19.88 min.
Rainfall intensity = 2.353(In /Hr)
Area averaged loss rate (Fm) = 0.4889(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC
No. (CFS) (min)
Rainfall Intensity
(In /Hr)
1
249.266
21.48
2.247
2
9.395
19.88
2.353
Qmax (1)
=
1.000
* 1.000 *
249.266)
+
0.943
* 1.000 *
9.395)
+ = 258.125
Qmax(2)
=
1.058
* 0.926 *
249.266)
+
1.000
* 1.000 *
9.395)
+ = 253.620
258.125 253.620
Area of streams before confluence:
151.817 5.600
Effective area values after confluence:
157.417 146.151
Total of 2 streams to confluence:
Flow rates before confluence point:
249.266 9.395
Maximum flow rates confluence using above data:
Results of confluence:
Total flow rate = 258.125(CFS)
Time of concentration = 21.477 min.
Effective stream area after confluence = 157.417(Ac.)
Study area average Pervious fraction(Ap) = 0.434
Study area average soil loss rate(Fm) = 0.425(In /Hr)
Study area total (this main stream) = 157.42(Ac.)
End of computations, total study area = 158.50 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Note: These figures do not consider reduced effective area
effects caused by confluences in the rational equation.
Area averaged pervious area fraction(Ap) = 0.435
Area averaged SCS curve number = 32.0
e
E
ti
0
►l
San Bernardino County Rational Hydrology Program
(Hydrology Manual Date - August 1986)
Civi1CADD /Civi1DESIGN Engineering Software, (c) 1990 Version 2.3
Rational Hydrology Study Date: 3/19/91
------------------------------------------------------------------ - - - - --
HYDROLOGY ANALYSIS FOR CITRUS AVE STORM DRAIN
Q 25 YEAR
IN THE CITY OF FONTANA COUNTY OF SAN BERNARDINO
DATA TO BE USED IN RAT253 FILE NAME RAT252 J.N. 90065
* * * * * * * ** Hydrology Study Control Information * * * * * * * * **
ti
�i
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 112.100 to Point /Station 112.100
* * ** USER DEFINED FLOW INFORMATION AT A POINT * * **
Soil classification AP and SCS values input by user
USER INPUT of soil data for subarea
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.4350 Max loss rate(Fm)= 0.425(In /Hr)
Rainfall intensity = 2.247(In /Hr) for a 25.0 year storm
User specified values are as follows:
TC = 21.48 min. Rain intensity = 2.25(In /Hr)
Total area = 158.50(Ac.) Total runoff = 258.12(CFS)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 112.100 to Point /Station 125.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1297.70(Ft.)
Downstream point /station elevation = 1291.50(Ft.)
Pipe length = 340.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 258.120(CFS)
Nearest computed pipe diameter = 54.00(In.)
Calculated individual pipe flow = 258.120(CFS)
Normal flow depth in pipe = 42.94(In.)
Flow top width inside pipe = 43.59(In.)
Critical depth could not be calculated.
Pipe flow velocity = 19.03(Ft /s)
Travel time through pipe = 0.30 min.
Time of concentration (TC) = 21.78 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 125.000 to Point /Station 125.100
* * ** SUBAREA FLOW ADDITION * * **
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
//7
Rational hydrology study
storm event year is 25.0
10 Year storm 1 hour
rainfall =
1.010(In.)
j
100 Year storm 1 hour
rainfall =
1.520(In.)
Computed rainfall intensity:
Storm year = 25.00
1 hour rainfall
p = 1.213(In.)
Slope used for rainfall
intensity curve
b = 0.6000
Soil antecedent moisture
condition (AMC)
= 2
ti
�i
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 112.100 to Point /Station 112.100
* * ** USER DEFINED FLOW INFORMATION AT A POINT * * **
Soil classification AP and SCS values input by user
USER INPUT of soil data for subarea
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.4350 Max loss rate(Fm)= 0.425(In /Hr)
Rainfall intensity = 2.247(In /Hr) for a 25.0 year storm
User specified values are as follows:
TC = 21.48 min. Rain intensity = 2.25(In /Hr)
Total area = 158.50(Ac.) Total runoff = 258.12(CFS)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 112.100 to Point /Station 125.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1297.70(Ft.)
Downstream point /station elevation = 1291.50(Ft.)
Pipe length = 340.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 258.120(CFS)
Nearest computed pipe diameter = 54.00(In.)
Calculated individual pipe flow = 258.120(CFS)
Normal flow depth in pipe = 42.94(In.)
Flow top width inside pipe = 43.59(In.)
Critical depth could not be calculated.
Pipe flow velocity = 19.03(Ft /s)
Travel time through pipe = 0.30 min.
Time of concentration (TC) = 21.78 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 125.000 to Point /Station 125.100
* * ** SUBAREA FLOW ADDITION * * **
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
//7
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.098(In /Hr)
Time of concentration = 21.78 min.
Rainfall intensity = 2.228(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.895
Subarea runoff = 8.622(CFS) for 5.000(Ac.)
Total runoff = 266.742(CFS) Total area = 163.50(Ac.)
Area averaged Fm value = 0.415(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 125.100 to Point /Station 116.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1291.50(Ft.)
Downstream point /station elevation = 1288.50(Ft.)
Pipe length = 240.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 266.742(CFS)
Nearest computed pipe diameter 57.00(In.)
Calculated individual pipe flow 266.742(CFS)
Normal flow depth in pipe = 49.88(In.)
Flow top width inside pipe = 37.70(In.)
Critical Depth = 53.37(In.)
Pipe flow velocity = 16.23(Ft/s)
Travel time through pipe = 0.25 min.
" Time of concentration (TC) = 22.02 min.
it
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 125.100 to Point /Station 116.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
go Along Main Stream number: 1 in normal stream number 1
Stream flow area = 163.500(Ac.)
Runoff from this stream = 266.742(CFS)
.� Time of concentration = 22.02 min.
Rainfall intensity = 2.213(In /Hr)
1W Area averaged loss rate (Fm) = 0.4153(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4248
sA
iW +++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 114.000 to Point /Station 114.100
** * INITIAL AREA EVALUATION * * **
OMMERCIAL subarea type
Decimal fraction soil group A = 1.00.0
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.098(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1304.500(Ft.)
Bottom (of initial area) elevation = 1295.400(Ft.)
Difference in elevation = 9.100(Ft.)
Slope = 0.00910 s( %)= 0.91
TC = k(0.304) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 12.333 min.
Rainfall intensity = 3.134(In /Hr) for a 25.0 year storm
0
h
�rl
0
Effective runoff coefficient used for area (Q =KCIA) is C = 0.872
Subarea runoff = 15.029(CFS)
Total initial stream area = 5.500(Ac.)
Pervious area fraction = 0.100
Initial area Fm value = 0.098(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 114.100 to Point /Station 115.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1295.400(Ft.)
End of street segment elevation = 1293.000(Ft.)
Length of street segment = 450.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [2] side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
18.991(CFS)
Depth of flow = 0.525(Ft.)
Average velocity = 3.008(Ft /s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 15.746(Ft.)
Flow velocity = 3.01(Ft /s)
Travel time = 2.49 min. TC = 14.83 min.
Adding area flow to street
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)=
0.098(In /Hr)
Rainfall intensity = 2.806(In /Hr) for a 25.0
year storm
Effective runoff coefficient used for area,(total area
with modified
rational method)(Q =KCIA) is C = 0.869
Subarea runoff = 5.446(CFS) for 2.900(Ac.)
Total runoff = 20.475(CFS) Total area =
8.40(Ac.)
Area averaged Fm value = 0.098(In /Hr)
Street flow at end of street = 20.475(CFS)
Half street flow at end of street = 10.238(CFS)
Depth of flow = 0.538(Ft.)
Average velocity = 3.046(Ft /s)
Flow width (from curb towards crown)= 16.382(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 115.100 to Point /Station 116.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1293.000(Ft.)
End of street segment elevation = 1286.400(Ft.)
Length of street segment = 400.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
r , MY
r
r�
iw
Distance from crown to crossfall grade break = 24.000(Ft.)
33.029(CFS)
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.098(In /Hr)
Rainfall intensity = 2.686(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area.(total area with modified
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.652(Ft.)
Average velocity = 5.939(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 22.099(Ft.)
Flow velocity = 5.94(Ft /s)
Travel time = 1.12 min. TC = 15.95 min.
Adding area flow to street
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
rational method)(Q =KCIA) is C = 0.867
Subarea runoff = 23.083(CFS) for 10.300(Ac.)
T otal runoff = 43.559(CFS) Total area =
Area average �Fm value - = - 0:098 (In /Hr)
Street flow at end of street = 43.559(CFS)
Half street flow at end of street = 43.559(CFS)
Depth of flow = 0.727(Ft.)
Average velocity = 5.840(Ft /s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property =
Flow width (from curb towards crown)= 25.864(Ft.)
18.70(Ac.)
� �13 /4W
3.03(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 115.100 to Point /Station 116.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 18.700(Ac.)
Runoff from this stream = 43.559(CFS)
Time of concentration = 15.95 min.
Rainfall intensity = 2.686(In /Hr)
Area averaged loss rate (Fm) = 0.0978(In /Hr)
Area averaged Pervious ratio (Ap) = 0.1000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In /Hr)
1 266.742 22.02 2.213
2 43.559 15.95 2.686
Qmax (1) _
1.000 * 1.000 * 266.742) +
0.817 * 1.000 * 43.559) + = 302.342
Qmax(2) _
1.263 * 0.724 * 266.742) +
1.000 * 1.000 * 43.559) + = 287.529
Total of 2 streams to confluence:
Flow rates before confluence point:
266.742 43.559
Maximum flow rates at confluence using above data:
302.342 287.529
Area of streams before confluence:
163.500 18.700
Effective area values after confluence:
182.200 137.099
Results of confluence:
Total flow rate = 302.342(CFS)
Time of concentration = 22.024 min.
Effective stream area after confluence = 182.200(Ac.)
Study area average Pervious fraction(Ap) = 0.391
Study area average soil loss rate(Fm) = 0.383(In /Hr)
111
Study area total (this main stream) = 182.20(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 126.000 to Point /Station 116.100
* * ** SUBAREA FLOW ADDITION * * **
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
j� Decimal fraction soil group D = 0.000
SCS curve number for soi.l(AMC 2) = 32.00
'Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.098(In /Hr)
Time of concentration = 22.02 min.
Rainfall intensity = 2.213(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
w rational method)(Q =KCIA) is C = 0.881
Subarea runoff = 7.312(CFS) for 5.000(Ac.)
Total runoff = 309.654(CFS) Total area = 187.20(Ac.)
Area averaged Fm value = 0.375(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 116.100 to Point /Station 118.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1288.50(Ft.)
Downstream point /station elevation = 1283.50(Ft.)
Pipe length = 230.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 309.654(CFS)
Nearest computed pipe diameter = 54.00(In.)
Calculated individual pipe flow = 309.654(CFS)
Normal flow depth in pipe = 48.75(In.)
Flow top width inside pipe = 32.00(In.)
Critical depth could not be calculated.
Pipe flow velocity = 20.48(Ft /s)
Travel time through pipe = 0.19 min.
Time of concentration (TC) = 22.21 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 116.100 to Point /Station 118.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
1-91
M
Stream flow area = 187.200(Ac.)
Runoff from this stream = 309.654(CFS)
Time of concentration = 22.21 min.
Rainfall intensity = 2.202(In /Hr)
Area averaged loss rate (Fm) = 0.3751(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3836
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 117.000 to Point /Station 117.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1294.000(Ft.)
Bottom (of initial area) elevation = 1285.300(Ft.)
Difference in elevation = 8.700(Ft.)
Slope = 0.00870 s(%)= 0.87
TC = k(0.389) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 15.924 min.
Rainfall intensity = 2.688(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.736
Subarea runoff = 13.065(CFS)
Total initial stream area = 6.600(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.489(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 117.100 to Point /Station 118.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
�i
A
Top of street segment elevation = 1285.300(Ft.)
End of street segment elevation = 1283.500(Ft.)
Length of street segment = 600.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [2] side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.566(Ft.)
Average velocity = 2.346(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 17.782(Ft.)
Flow velocity = 2.35(Ft /s)
Travel time = 4.26 min. TC = 20.19 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
/;z
18.014(CFS)
•A
t1
Fl
rational method)(Q =KCIA) is C = 0.711
Subarea runoff = 6.175(CFS) for 5.000(Ac.)
T otal runoff = 19.240(CFS) Total area = 11.60(Ac.)
Area average Fm value = - U.489(In /Hr)
Street flow at end of street = 19.240(CFS)
Half street flow at end of street = 9.620(CFS) Q� GIB N °l3
Depth of flow = 0.577(Ft.)
Average velocity = 2.378(Ft/s)
Note: depth of flow exceeds top of street crown.
Flow width (from curb towards crown)= 18.000(Ft.)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Rainfall intensity = 2.332(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area.(total area with modified
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 117.100 to Point /Station 118.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 11.600(Ac.)
Runoff from this stream = 19.240(CFS)
Time of concentration = 20.19 min.
Rainfall intensity = 2.332(In /Hr)
Area averaged loss rate (Fm) = 0.4889(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream
Flow rate
TC
Rainfall Intensity
No.
(CFS)
(min)
(In /Hr)
1
309.654
22.21
2.202
2
19.240
20.19
2.332
Qmax (1)
_
1.000 *
1.000 *
309.654)
+
0.929 *
1.000 *
19.240)
+ = 327.537
Qmax(2)
_
1.071 *
0.909 *
309.654)
+
1.000 *
1.000 *
19.240)
+ = 320.688
Total of 2 streams to confluence:
Flow rates before confluence point:
309.654 19.240
Maximum flow rates at confluence using above data:
327.537 320.688
Area of streams before confluence:
187.200 11.600
Effective area values after confluence:
198.800 181.732
Results of confluence:
Total flow rate = 327.537(CFS)
Time of concentration = 22.212 min.
Effective stream area after confluence =
Study area average Pervious fraction(Ap)
Study area average soil loss rate(Fm) _
Study area total (this main stream) _
198.800(Ac.)
0.390
0.382(In /Hr)
198.80(Ac.)
�i
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 118.100 to Point /Station 120.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1283.50(Ft.)
Downstream point /station elevation = 1276.50(Ft.)
Pipe length = 346.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 327.537(CFS)
Nearest computed pipe diameter = 57.00(In.)
Calculated individual pipe flow = 327.537(CFS)
Normal flow depth in pipe = 47.44(In.)
Flow top width inside pipe = 42.60(In.)
Critical depth could not be calculated.
Pipe flow velocity = 20.77(Ft /s)
Travel time through pipe = 0.28 min.
Time of concentration (TC) = 22.49 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 118.100 to Point /Station 120.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 198.800(Ac.)
Runoff from this stream = 327.537(CFS)
Time of concentration = 22.49 min.
Rainfall intensity = 2.185(In /Hr)
Area averaged loss rate (Fm) = 0.3818(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3904
im
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
j-1 Process from Point /Station 119.000 to Point /Station 119.100
* * ** INITIAL AREA EVALUATION * * **
�* RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
irr SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
�.. Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1287.000(Ft.)
Bottom (of initial area) elevation = 1280.000(Ft.)
Difference in elevation = 7.000(Ft.)
Slope = 0.00700 s( %)= 0.70
TC = k(0.389) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 16.631 min.
Rainfall intensity = 2.619(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.732
Subarea runoff = 9.587(CFS)
Total initial stream area = 5.000(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.489(In /Hr)
i +++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 119.100 to Point /Station 120.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1280.000(Ft.)
End of street segment elevation = 1276.500(Ft.)
im / y
0
0
M
F
F
Length of street segment = 600.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
rational method)(Q =KCIA) is C = 0.712
Subarea runoff = 7.123(CFS) for 5.000(Ac.)
T otal runoff = 16.710(CFS Total area = 10.00(Ac.)
Area average m value = 0.489(In /Hr)
Street flow at end of street = 16.710(CFS)
Half street flow at end of street = 8.355(CFS)
Depth of flow = 0.497(Ft.)
Average velocity = 3.056(Ft /s)
14.380(CFS)
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Rainfall intensity = 2.346(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on (2] side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.474(Ft.)
Average velocity = 2.977(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 13.181(Ft.)
Flow velocity = 2.98(Ft /s)
Travel time = 3.36 min. TC = 19.99 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Flow width (from curb towards crown)= 14.342(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 119.100 to Point /Station 120.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 10.000(Ac.)
Runoff from this stream = 16.710(CFS)
Time of concentration = 19.99 min.
Rainfall intensity = 2.346(In /Hr)
Area averaged loss rate (Fm) = 0.4889(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC
No. (CFS) (min)
1 327.537 22.49
2 16.710 19.99
Qmax(1) _
1.000 * 1.000 *
0.914 * 1.000 *
Rainfall Intensity
(In /Hr)
2.185
2.346
327.537) +
16.710) + = 342.806
/6S
Qmax(2)
Yr
F]
F.
P1
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 120.100 to Point /Station 121.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1276.50(Ft.)
Downstream point /station elevation = 1270.50(Ft.)
Pipe length = 400.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 342.806(CFS)
Nearest computed pipe diameter = 60.00(In.)
Calculated individual pipe flow = 342.806(CFS)
Normal flow depth in pipe = 56.28(In.)
Flow top width inside pipe = 28.94(In.)
Critical depth could not be calculated.
Pipe flow velocity = 17.94(Ft /s)
Travel time through pipe = 0.37 min.
Time of concentration (TC) = 22.86 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 120.100 to Point /Station 121.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 208.800(Ac.)
Runoff from this stream = 342.806(CFS)
Time of concentration = 22.86 min.
Rainfall intensity = 2.164(In /Hr)
Area averaged loss rate (Fm) = 0.3869(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3957
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 121.000 to Point /Station 121.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
1.089 * 0.889 * 327.537)
+
1.000 * 1.000 * 16.710)
+ = 333.685
Total of 2 streams to confluence:
Flow rates before confluence point:
*�
327.537 16.710
Maximum flow rates at confluence using above data:
342.806 . 333.685
Area of streams before confluence:
198.800 10.000
Effective area values after confluence:
208.800 186.710
Results of confluence:
Total flow rate = 342.806(CFS)
Time of concentration = 22.489 min.
Effective stream area after confluence =
208.800(Ac.)
Study area average Pervious fraction(Ap)
= 0.396
Study area average soil loss rate(Fm) =
0.387(In /Hr)
Study area total (this main stream) =
208.80(Ac.)
Yr
F]
F.
P1
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 120.100 to Point /Station 121.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1276.50(Ft.)
Downstream point /station elevation = 1270.50(Ft.)
Pipe length = 400.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 342.806(CFS)
Nearest computed pipe diameter = 60.00(In.)
Calculated individual pipe flow = 342.806(CFS)
Normal flow depth in pipe = 56.28(In.)
Flow top width inside pipe = 28.94(In.)
Critical depth could not be calculated.
Pipe flow velocity = 17.94(Ft /s)
Travel time through pipe = 0.37 min.
Time of concentration (TC) = 22.86 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 120.100 to Point /Station 121.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 208.800(Ac.)
Runoff from this stream = 342.806(CFS)
Time of concentration = 22.86 min.
Rainfall intensity = 2.164(In /Hr)
Area averaged loss rate (Fm) = 0.3869(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3957
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 121.000 to Point /Station 121.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1277.000(Ft.)
Bottom (of initial area) elevation = 1270.500(Ft.)
Difference in elevation = 6.500(Ft.)
Slope = 0.00650 s(o)= 0.65
TC = k(0.389) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 16.880 min.
Rainfall intensity = 2.596(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.731
Subarea runoff = ll.568(CFS
Total initial stream area = 6.100(Ac.) o
Pervious area fraction = 0.500
Initial area Fm value = 0.489(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 121.000 to Point /Station 121.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 6.100(Ac.)
Runoff from this stream = 11.568(CFS)
Time of concentration = 16.88 min.
Rainfall intensity = 2.596(In /Hr)
Area averaged loss rate (Fm) = 0.4889(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In /Hr)
1 342.806 22.86 2.164
2 11.568 16.88 2.596
�* Qmax(1) _
1.000 * 1.000 * 342.806) +
0.795 * 1.000 * 11.568) + = 352.003
Qmax(2) _
1.243 * 0.738 * 342.806) +
1.000 * 1.000 * 11.568) + = 326.207
Total of 2 streams to confluence:
Flow rates before confluence point:
342.806 11.568
Maximum flow rates at confluence using above data:
352.003 326.207
Area of streams before confluence:
208.800 6.100
Effective area values after confluence:
214.900 160.272
Results of confluence:
Total flow rate = 352.003(CFS)
Time of concentration = 22.861 min.
Effective stream area after confluence = 214.900(Ac.)
Study area average Pervious fraction(Ap) = 0.399
Study area average soil loss rate(Fm) = 0.390(In /Hr)
Study area total (this main stream) = 214.90(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 121.100 to Point /Station 121.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
r
/.7 7
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 214.900(Ac.)
Runoff from this stream = 352.003(CFS)
Time of concentration = 22.86 min.
Rainfall intensity = 2.164(In /Hr)
Area averaged loss rate (Fm) = 0.3898(In /Hr)
s, Area averaged Pervious ratio (Ap) = 0.3986
++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 127.000 to Point /Station 121.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1280.000(Ft.)
Bottom (of initial area) elevation = 1270.500(Ft.)
Difference in elevation = 9.500(Ft.)
Slope = 0.00950 s( %)= 0.95
TC = k(0.389) *[(length ^3) /(elevation change)] ^0:2
Initial area time of concentration = 15.646 min.
Rainfall intensity = 2.717(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.738
Subarea runoff = 7. 219 CFS
Zo a initial stream area = 3.600(Ac.) C O��O
Pervious area fraction = 0.500
Initial area Fm value = 0.489(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 127.000 to Point /Station 121.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 3.600(Ac.)
Runoff from this stream = 7.219(CFS)
Time of concentration = 15.65 min.
Rainfall intensity = 2.717(In /Hr)
Area averaged loss rate (Fm) = 0.4889(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream
Flow rate
TC
Rainfall Intensity
No.
(CFS)
(min)
(In /Hr)
*A!
1 352.003
22.86
2.164
2
7.219
15.65
2.717
Qmax(1)
_
1.000 *
1.000 *
352.003)
� ,
+
0.752 *
1.000 *
7.219)
+ = 357.431
Qmax(2)
_
1.312 *
0.684 *
352.003)
+
1.000 *
1.000 *
7.219)
+ = 323.204
Total of
2 streams
to confluence:
Flow rates before
confluence
point:
hl/
F]
M
an
w
stir
rr
352.003 7.219
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Maximum flow rates at confluence using above
data:
357.431 323.204
Area of streams before confluence:
* * **
214.900 3.600
RESIDENTIAL(5 - 7 dwl /acre)
Effective area values after confluence:
218.500 150.679
= 1.000
Results of confluence:
Decimal fraction soil group B
Total flow rate = 357.431(CFS)
Time of concentration = 22.861 min.
= 0.000
Effective stream area after confluence =
218.500(Ac.)
Study area average Pervious fraction(Ap)
= 0.400
Study area average soil loss rate(Fm) =
0.391(In /Hr)
Study area total (this main stream) =
218.50(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 121.100 to Point /Station 123.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1270.50(Ft.)
Downstream point /station elevation = 1266.70(Ft.)
Pipe length = 200.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 357.431(CFS)
Nearest computed pipe diameter = 60.00(In.)
Calculated individual pipe flow = 357.431(CFS)
Normal flow depth in pipe = 48.94(In.)
Flow top width inside pipe = 46.53(In.)
Critical depth could not be calculated.
Pipe flow velocity = 20.84(Ft /s)
Travel time through pipe = 0.16 min.
Time of concentration (TC) = 23.02 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
�+ Process from Point /Station 121.100 to Point /Station 123.100
do * * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 218.500(Ac.)
Runoff from this stream = 357.431(CFS)
Time of concentration = 23.02 min.
Rainfall intensity = 2.155(In /Hr)
Area averaged loss rate (Fm) = 0.3914(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4003
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station
122.000 to Point /Station 122.100
* * ** INITIAL AREA EVALUATION
* * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A
= 1.000
Decimal fraction soil group B
= 0.000
Decimal fraction soil group C
= 0.000
Decimal fraction soil group D
= 0.000
SCS curve number for soil(AMC
Pervious ratio(Ap) = 0.5000
2) = 32.00
Max loss rate(Fm)= 0.489(In /Hr)
Initial subarea data:
Initial area flow distance =
1000.000(Ft.)
Top (of initial area) elevation
= 1276.000(Ft.)
Bottom (of initial area) elevation
= 1268.300(Ft.)
Difference in elevation =
7.700(Ft.)
Slope = 0.00770 s( %)=
0.77
TC = k(0.389) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 16.317 min.
Rainfall intensity = 2.649(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.734
Subarea runoff = 13.222(CFS)
Total initial stream area = 6.800(Ac.)
Pervious area fraction = 0.500
Initial area Fm value = 0.489(In /Hr)
+++++++++++++++.++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 122.100 to Point /Station 123.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
on
Top of street segment elevation = 1268.300(Ft.)
End of street segment elevation = 1266.700(Ft.)
Length of street segment = 250.000(Ft.)
!� Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
iiYrl Street flow is on [2] side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street = 17.111(CFS)
'Depth of flow = 0.493(Ft.)
Average velocity = 3.188(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 14.163(Ft.)
Flow velocity = 3.19(Ft /s)
Travel time = 1.31 min. TC = 17.62 min.
Adding area flow to street
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Rainfall intensity = 2.530(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.726
Subarea runoff = 6.614(CFS) for 4.000(Ac.)
Total runoff = 19.836(CFS) Total area = 10.80(Ac.)
Area averaged Fm value = 0.489(In /Hr)
Street flow at end of street = 19.836(CFS)
Half street flow at end of street = 9.918(CFS)
Depth of flow = 0.517(Ft.)
Average velocity = 3.269(Ft/s)
Flow width (from curb towards crown)= 15.352(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 122.100 to Point /Station 123.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 10.800(Ac.)
r
/� D
Runoff from this stream = 19.836(CFS)
Time of concentration = 17.62 min.
Rainfall intensity = 2.530(In /Hr)
Area averaged loss rate (Fm) = 0.4889(In/Hr)
Area averaged Pervious ratio (Ap) = 0.5000
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 128.000 to Point /Station 123.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group frac g p C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1280.000(Ft.)
Bottom (of initial area) elevation = 1266.700(Ft.)
Difference in elevation = 13.300(Ft.)
Slope = 0.01330 s( %)= 1.33
TC = k(0.389) *[(length ^3) /(elevation change)]A0.2
Initial area time of concentration = 14.628 min.
Rainfall intensity = 2.829(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area ( =KCIA) is C = 0.744
Subarea runoff = 17.901 CFS)
To -...a ins. is s ream = 8.500(Ac.)
Pervious area fraction = 0.500 C/3 N°
Initial area Fm value = 0.489(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 128.000 to Point /Station 123.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Alon g Main Stream number: 1 in normal stream number 3
Stream flow area = 8.500(Ac.)
Runoff from this stream = 17.901(CFS)
Time of concentration = 14.63 min.
Rainfall intensity = 2.829(In /Hr)
Area averaged loss rate (Fm) = 0.4889(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In /Hr)
1 357.431 23.02 2.155
2 19.836 17.62 2.530
3 17.901 14.63 2.829
Qmax(1) =
1.000 * 1.000 * 357.431) +
0.816 * 1.000 * 19.836) +
0.712 * 1.000 * 17.901) + = 386.372
Qmax(2) =
1.212 * 0.766 * 357.431) +
1.000 * 1.000 * 19.836) +
0.872 * 1.000 * 17.901) + = 367.216
Qmax(3) =
1.382 * 0.635 * 357.431) +
/,/
1.147 * 0.830 * 19.836) +
1.000 * 1.000 * 17.901) + = 350.679
Total of 3 streams to confluence:
Flow rates before confluence point:
357.431 19.836 17.901
Maximum flow rates at confluence using above data:
386.372 367.216 350.679
Area of streams before confluence:
218.500 10.800 8.500
Effective area values after confluence:
237.800 186.580 156.303
Results of confluence:
Total flow rate = 386.372(CFS)
Time of concentration = 23.021 min.
Effective stream area after confluence = 237.800(Ac.)
Study area average Pervious fraction(Ap) g ( P) = 0.408
Study area average soil loss rate(Fm) = 0.399(In /Hr)
Study area total (this main stream) = 237.80(Ac.)
End of computations, total study area = 237.80 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Note: These figures do not consider reduced effective area
effects caused by confluences in the rational equation.
Area averaged pervious area fraction(Ap) = 0.408
Area averaged SCS curve number = 32.0
/31
San Bernardino County Rational Hydrology Program
(Hydrology Manual Date - August 1986)
CivilCADD /Civi1DESIGN Engineering Software, (c) 1990 Version 2.3
Rational Hydrology Study Date: 3/19/91
HYDROLOGY ANALYSIS FOR CITRUS AVE STORM DRAIN
Q 25 YEAR
IN THE CITY OF FONTANA COUNTY OF SAN BERNARDINO
1 FILE NAME RAT253 J.N. 90065
* * * * * * * ** Hydrology Study Control Information * * * * * * * * **
Rational hydrology study storm event year is 25.0
10 Year storm 1 hour rainfall = 1.010(In.)
100 Year storm 1 hour rainfall = 1.520(In.)
Computed rainfall intensity:
Storm year = 25.00 1 hour rainfall p = 1.213(In.)
Slope used for rainfall intensity curve b = 0.6000
Soil antecedent moisture condition (AMC) = 2
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 123.100 to Point /Station 123.100
* * ** USER DEFINED FLOW INFORMATION AT A POINT * * **
Soil classification AP and SCS values input by user
USER INPUT of soil data for subarea
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.4080 Max loss rate(Fm)= 0.399(In /Hr)
Rainfall intensity = 2.155(In /Hr) for a 25.0 year storm
User specified values are as follows:
TC = 23.02 min. Rain intensity = 2.16(In /Hr)
Total area = 237.80(Ac.) Total runoff = 386.37(CFS)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 123.100 to Point /Station 130.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1266.70(Ft.)
Downstream point /station elevation = 1254.90(Ft.)
Pipe length = 820.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 386.370(CFS)
Nearest computed pipe diameter = 66.00(In.)
Calculated individual pipe flow = 386.370(CFS)
Normal flow depth in pipe = 51.84(In.)
Flow top width inside pipe = 54.18(In.)
Critical Depth = 61.82(In.)
Pipe flow velocity = 19.31(Ft/s)
Travel time through pipe = 0.71 min.
Time of concentration (TC) = 23.73 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 123.100 to Point /Station 130.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 237.800(Ac.)
Runoff from this stream = 386.370(CFS)
Time of concentration = 23.73 min.
Rainfall intensity = 2.116(In /Hr)
Area averaged loss rate (Fm) = 0.3989(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4080
+++++++++++++++++++++++++++++++ + + + + + + + + + + +.... + + + + + + + + + + + +.... .......
Process from Point /Station 131.000 to Point /Station 130.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
j Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
in Initial subarea data:
Initial area flow distance = 900.000(Ft.)
Top (of initial area) elevation = 1266.000(Ft.)
Bottom (of initial area) elevation = 1254.900(Ft.)
Difference in elevation = 11.100(Ft.)
Slope = 0.01233 s( %)= 1.23
TC = k(0.389) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 14.237 min.
Rainfall intensity = 2.875(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.747
Su barea runoff = 9.450(CF
�
Tot initial stream area = 4.400(Ac. � C,g N, 0 S
Pervious area fraction = 0.500
Initial area Fm value = 0.489(In /Hr)
ij +++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 131.000 to Point /Station 130.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
fill Along Main Stream number: 1 in normal stream number 2
Stream flow area = 4.400(Ac.)
Runoff from this stream = 9.450(CFS)
Time of concentration = 14.24 min.
Rainfall intensity = 2.875(In /Hr)
Area averaged loss rate (Fm) = 0.4889(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 98.000 to Point /Station 130.100
* * ** INITIAL AREA EVALUATION * * **
RESIDENTIAL(5 - 7 dwl /acre)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.5000 Max loss rate(Fm)= 0.489(In /Hr)
Initial subarea data:
Initial area flow distance = 820.000(Ft.)
Top (of initial area) elevation = 1266.000(Ft.)
Bottom (of initial area) elevation = 1254.900(Ft.)
Difference in elevation = 11.100(Ft.)
Slope = 0.01354 s( %)= 1.35
TC = k(0.389) *[(length ^3) /(elevation change)] ^0.2
��r
Initial area time of concentration = 13.464 min.
Rainfall irunofftcoefficient9usednfor )area (Q= KCIA)Ois year = storm
Effective 0.752
run
Subare runoff = 5.590(CFS)
Total ini is s ream area = 2 .500 (Ac. ) W--- G',g AJ7
Pervious area fraction = 0.500
Initial area Fm value = 0.489(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 98.000 to Point /Station 130.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 3
Stream flow area = 2.500(Ac.)
Runoff from this stream = 5.590(CFS)
Time of concentration = 13.46 min.
Rainfall intensity = 2.973(In /Hr)
Area averaged loss rate (Fm) = 0.4889(In /Hr)
Area averaged Pervious ratio (Ap) = 0.5000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS) (min)
(In /Hr)
1 386.370 23.73
2.116
2 9.450 14.24
2.875
q
3 5.590 13.46
2.973
Qmax (1) _
+
1.000 * 1.000 * 386.370)
0.682 * 1.000 * 9.450)
+
0.655 * 1.000 * 5.590)
+ = 396.476
Qmax(2) _
1.442 * 0.600 * 386.370)
+
1.000 * 1.000 * 9.450)
* 5.590)
+
+ = 349.105
0.961 * 1.000
Qmax(3) _
1.499 * 0.567 * 386.370)
+
+�
1.041 * 0.946 * 9.450)
+
1.000 * 1.000 * 5.590)
+ = 343.529
Total of 3 streams to confluence:
Flow rates before confluence point:
386.370 9.450 5.590
Maximum flow rates at confluence using above data:
396.476 349.105 343.529
Area of streams before confluence:
237.800 4.400 2.500
Effective area values after confluence:
244.700 149.587 141.597
Results of confluence:
Total flow rate = 396.476(CFS)
Time of concentration = 23.728 min.
Effective stream area after confluence =
244.700(Ac.)
Pervious fraction(Ap)
= 0.411
Study area average
soil loss rate(Fm) =
0.401(In /Hr)
Study area average
Study area total (this main stream) =
244.70(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 98.000
STREAMS * * **
to Point /Station 130.100
* * ** CONFLUENCE OF MINOR
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 244.700(Ac.)
Runoff from this stream = 396.476(CFS)
Time of concentration = 23.73 min.
Ad Rainfall intensity = 2.116(In /Hr)
Area averaged loss rate (Fm) = 0.4015(In /Hr)
Area averaged Pervious ratio (Ap) = 0.4106
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 129.000 to Point /Station 129.100
* * ** INITIAL AREA EVALUATION * * **
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.098(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1269.000(Ft.)
Bottom (of initial area) elevation = 1256.700(Ft.)
Difference in elevation = 12.300(Ft.)
Slope = 0.01230 s( %)= 1.23
TC = k(0.304) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 11.612 min.
Rainfall intensity = 3.249(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.873
Subarea runoff = 28.364(CFS)
Total initial stream area = 10.000(Ac.)
Pervious area fraction = 0.100
Initial area Fm value = 0.098(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 129.100 to Point /Station 130.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
r Top of street segment elevation = 1256.700(Ft.)
End of street segment elevation = 1254.900(Ft.)
.• Length of street segment = 600.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on (1) side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0.150
Estimated mean flow rate at midpoint of street— 39.284(CFS)
Depth of flow = 0.898(Ft.)
Average velocity = 2.848(Ft/s)
Warning: depth of flow exceeds top of curb
Note: depth of flow exceeds top of street crown.
Distance that curb overflow reaches into property = 11.57(Ft.)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 32.000(Ft.)
i _ti w
y
R
0
L-j
E
��l
0
7
rational method)(Q =KCIA) is C = 0.868
Subarea runoff = 14.252(CFS) for 7.700(Ac.)
T otal runoff = 42.617(CFS Total area = 17.70(Ac.)
Area averaged Fm value = 0.098(In /Hr)
Street flow at end of street = 42.617(CFS)
Half street flow at end of street = 42.617(CFS)
Depth of flow = 0.916(Ft.)
Average velocity = 2.920(Ft /s)
Warning: depth of flow exceeds top of curb
Note: depth of flow exceeds top of street crown.
Distance that curb overflow reaches into property = 12.48(Ft.)
Flow velocity = 2.85(Ft /s)
Travel time = 3.51 min. TC = 15.12 min.
Adding area flow to street
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.098(In /Hr)
Rainfall intensity = 2.773(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area (total area with modified
Flow width (from curb towards crown)= 32.000(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from'Point /Station 129.100 to Point /Station 130.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 17.700(Ac.)
Runoff from this stream = 42.617(CFS)
Time of concentration = 15.12 min.
Rainfall intensity = 2.773(In /Hr)
Area averaged loss rate (Fm) = 0.0978(In /Hr)
Area averaged Pervious ratio (Ap) = 0.1000
Summary of stream data:
Stream Flow rate TC
No. (CFS) (min)
Rainfall Intensity
(In /Hr)
1 396.476 23.73 2.116
2 42.617 15.12 2.773
Qmax (1) _
1.000 * 1.000 * 396.476) +
0.755 * 1.000 * 42.617) + = 428.631
Qmax(2) _
1.383 * 0.637 * 396.476) +
1.000 * 1.000 * 42.617) + = 392.081
Total of 2 streams to confluence:
Flow rates before confluence point:
396.476 42.617
Maximum flow rates at confluence using above data:-
428.631 392.081
Area of streams before confluence:
244.700 17.700
Effective area values after confluence:
262.400 173.659
Results of confluence:
Total flow rate = 428.631(CFS)
Time of concentration = 23.728 min.
E
d
F
Effective stream area after confluence =
Study area average Pervious fraction(Ap)
Study area average soil loss rate(Fm) _
Study area total (this main stream) _
262.400(Ac.)
0.390
0.381(In /Hr)
262.40(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 130.100 to Point /Station 133.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1254.90(Ft.)
Downstream point /station elevation = 1247.30(Ft.)
Pipe length = 340.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 428.631(CFS)
Nearest computed pipe diameter = 63.00(In.)
Calculated individual pipe flow = 428.631(CFS)
Normal flow depth in pipe = 49.88(In.)
Flow top width inside pipe = 51.17(In.)
Critical depth could not be calculated.
Pipe flow velocity = 23.34(Ft/s)
Travel time through pipe = 0.24 min.
Time of concentration (TC) = 23.97 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 130.100 to Point /Station 133.100
go * * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 262.400(Ac.)
Runoff from this stream = 428.631(CFS)
Time of concentration = 23.97 min.
Rainfall intensity = 2.103(In /Hr)
tai Area averaged loss rate (Fm) = 0.3810(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3896
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 132.000 to Point /Station 132.100
* * ** INITIAL AREA EVALUATION * * **
0
�kl
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.196(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1260.000(Ft.)
Bottom (of initial area) elevation = 1251.100(Ft.)
Difference in elevation = 8.900(Ft.)
Slope = 0.00890 s( %)= 0.89
TC = k(0.324) *[(length ^3) /(elevation change) ] ^0.2
Initial area time of concentration = 13.203 min.
Rainfall intensity = 3.008(In /Hr) for a - 25.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.841
Subarea runoff = 18.480(CFS)
Total initial stream area = 7.300(Ac.)
Pervious area fraction = 0.200
Initial area Fm'value = 0.196(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 132.100 to Point /Station 133.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1251.100(Ft.)
End of street segment elevation = 1247.300(Ft.)
Length of street segment = 550.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [2] side(s) of the street
Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint.of street = 24.556(CFS)
Depth of flow = 0.547(Ft.)
i Average velocity = 3.497(Ft/s)
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 16.833(Ft.)
Flow velocity = 3.50(Ft /s)
Travel time = 2.62 min. TC = 15.82 min.
Adding area flow to street
COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.098(In /Hr)
** Rainfall intensity = 2.699(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.848
.. Subarea runoff = 9.200(CFS) for 4.800(Ac.)
Total runoff = 27 681( Total area = 12.10(Ac.)
iw Area averaged Fm value = 0.157(In /Hr)
Street flow at end of street = 27. 681 (CFS) �� �'�J �V° 4
Half street flow at end of street = 13.840(CFS)
Depth of flow = 0.568(Ft.)
Average velocity = 3.568(Ft/s)
Flow width (from curb towards crown)= 17.894(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 132.100 to Point /Station 133.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area =
12.100(Ac.)
Runoff from this stream
= 27.681(CFS)
Time of concentration =
15.82 min.
Rainfall intensity =
2.699(In /Hr)
Area averaged loss rate
(Fm) = 0.1568(In /Hr)
Area averaged Pervious
ratio (Ap) = 0.1603
Summary of stream data:
Stream Flow rate
TC Rainfall Intensity
No. (CFS)
(min) (In /Hr)
/7-x.7
1 428.631 23.97 2.103
2 27.681 15.82 2.699
Qmax (1) =
1.000 * 1.000 * 428.631) +
0.766 * 1.000 * 27.681) + = 449.830
Qmax(2) _
1.346 * 0.660 * 428.631) +
1.000 * 1.000 * 27.681) + = 408.420
Total of 2 streams to confluence:
Flow rates before confluence point:
428.631 27.681
Maximum flow rates at confluence using above data:
449.830 408.420
di Area of streams before confluence:
262.400 12.100
an Effective area values after confluence:
274.500 185.323
dw Results of confluence:
Total flow rate = 449.830(CFS)
an Time of concentration = 23.971 min.
r , Effective stream area after confluence = 274.500(Ac.)
Study area average Pervious fraction(Ap) = 0.380
Study area average soil loss rate(Fm) = 0.371(In /Hr)
Study area total (this main stream) = 2
** ++++++++++++++++++++++++++++++++++++++++++ -F- + + + + + + + +-.... + + + + +-+ + + + + + + ++
Process from Point /Station 133.100 to Point /Station 135.100
ow * * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
'i Upstrem point /station elevation = 1247.30(Ft.)
a
di Downstream point /station elevation = 1243.50(Ft.)
Pipe length = 325.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 449.830(CFS)
Nearest computed pipe diameter 72.00(In.)
Calculated individual pipe flow 449.830(CFS)
Normal flow depth in pipe = 57.94(In.)
Flow top width inside pipe = 57.09(In.)
Critical Depth = 66.37(In.)
Pipe flow velocity = 18.46(Ft/s)
Travel time through pipe = 0.29 min.
Time of concentration (TC) = 24.26 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 133.100 to Point /Station 135.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 274.500(Ac.)
Runoff from this stream = 449.830(CFS)
Time of concentration = 24.26 min.
Rainfall intensity = 2.088(In /Hr)
Area averaged loss rate (Fm) = 0.3711(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3795
+++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 134.000 to Point /Station 134.100
* * ** INITIAL AREA EVALUATION * * **
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.196(In /Hr)
Initial subarea data:
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 1255.000(Ft.)
Bottom (of initial area) elevation = 1246.700(Ft.)
Difference in elevation = 8.300(Ft.)
Slope = 0.00830 s(o)= 0.83
TC = k(0.324) *[(length ^3) /(elevation change)]-0.2
Initial area time of concentration = 13.388 min.
Rainfall intensity = 2.983(In /Hr) for a 25.0 year storm
+�+ Effective runoff coefficient used for area (Q =KCIA) is C = 0.841
Subarea runoff = 18.315(CFS)
�. Total initial stream area = 7.300(Ac.)
Pervious area fraction = 0.200
Initial area Fm value = 0.196(In /Hr)
,.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 134.100 to Point /Station 135.100
STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1246.700(Ft.)
End of street segment elevation = 1243.500(Ft.)
^ Length of street segment = 550.000(Ft.)
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 18.000(Ft.)
Distance from crown to crossfall grade break = 10.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
di Slope from grade break to crown (v /hz) = 0.020
Street flow is on [2) side(s) of the street
*�* Distance from curb to property line = 12.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
di Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
an Estimated mean flow rate at midpoint of street = 24.337(CFS)
Depth of flow = 0.560(Ft.)
go Average velocity = 3.251(Ft /s)
Streetflow hydraulics at midpoint of street travel:
"R Halfstreet flow width = 17.510(Ft.)
Ai Flow velocity = 3.25(Ft /s)
Travel time = 2.82 min. TC = 16.21 min.
, Adding area flow to street
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.196(In /Hr)
Rainfall intensity = 2.660(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.834
Subarea runoff = 8.523(CFS) for 4.800(Ac.)
T otal runoff 26.838 (CFS) Total area = 12.10(Ac.)
Area averaged Fm value = �U.196(In /Hr)
Street flow at end of street = 26.838(CFS) G,g,U'3
/ p r
I"
Half street flow at end of street = 13.419(CFS)
Depth of flow = 0.577(Ft.)
Average velocity = 3.314(Ft/s)
Note: depth of flow exceeds top of street crown.
�i Flow width (from curb towards crown)= 18.000(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 134.100 to Point /Station 135.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 12.100(Ac.)
.,,. Runoff from this stream = 26.838(CFS)
Time of concentration = 16.21 min.
Rainfall intensity = 2.660(In /Hr)
Area averaged loss rate (Fm) = 0.1956(In /Hr)
*� Area averaged Pervious ratio (Ap) = 0.2000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
�. No. (CFS) (min) (In /Hr)
rr
,., 1 449.830 24.26 2.088
2 26.838 16.21 2.660
Qmax (1) _
1.000 * 1.000 * 449.830) +
0.768 * 1.000 * 26.838) + = 470.440
Qmax(2) _
1.333 * 0.668 * 449.830) +
1.000 * 1.000 * 26.838) + = 427.417
Total of 2 streams to confluence:
Flow rates before confluence point:
449.830 26.838
Maximum flow rates at confluence using above data:
dd 470.440 - 427.417
Area of streams before confluence:
274.500 12.100
mi Effective area values after confluence:
286.600 195.467
•. Results of confluence:
Total flow rate = 470.440(CFS)
Time of concentration = 24.264 min.
Effective stream area after confluence = 286.600(Ac.)
"R Study area average Pervious fraction(Ap) = 0.372
Study area average soil loss rate(Fm) = 0.364 (In /Hr)
Study area total (this main stream) = 286.60(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 135.100 to Point/Station 136.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size)
Upstream point /station elevation = 1243.50(Ft.)
Downstream point /station elevation = 1242.00(Ft.)
4R Pipe length = 120.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 470.440(CFS)
Nearest computed pipe diameter = 72.00(In.)
Calculated individual pipe flow = 470.440(CFS)
Normal flow depth in pipe = 58.59(In.)
Flow top width inside pipe = 56.05(In.)
Critical Depth = 67.11(In.)
Pipe flow velocity = 19.09(Ft /s)
Travel time through pipe = 0.10 min.
Time of concentration (TC) = 24.37 min.
F
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 135.100 to Point /Station 136.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
w. Along Main Stream number: 1 in normal stream number 1
Stream flow area = 286.600(Ac.)
Runoff from this stream = 470.440(CFS)
Time of concentration = 24.37 min.
+.� Rainfall intensity = 2.083(In /Hr)
Area averaged loss rate (Fm) = 0.3637(In /Hr)
Area averaged Pervious ratio (Ap) = 0.3720
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 136.000 to Point /Station 136.100
* * ** INITIAL AREA EVALUATION * * **
+w COMMERCIAL subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.1000 Max loss rate(Fm)= 0.098(In /Hr)
Initial subarea data:
Initial area flow distance = 750.000(Ft.)
Top (of initial area) elevation = 1254.000(Ft.)
Bottom (of initial area) elevation = 1242.000(Ft.)
Difference in elevation = 12.000(Ft.)
Slope = 0.01600 s(%)= 1.60
TC = k(0.304) *[(length ^3) /(elevation change)] ^0:2
Initial area time of concentration = 9.819 min.
Rainfall intensity = 3.593(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.876
S ubarea runoff = 11.955(CFS)
To a i.ni i.a s ream area = 3 . 800 (Ac. )
Pervious area fraction = 0.100 "v
w" Initial area Fm value = 0.098(In /Hr)
i
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 136.000 to Point /Station 136.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: - 1 in normal stream number 2
Stream flow area = 3.800(Ac.)
Runoff from this stream = 11.955(CFS)
Time of concentration = 9.82 min.
Rainfall intensity = 3.593(In /Hr)
Area averaged loss rate (Fm) = 0.0978(In /Hr)
Area averaged Pervious ratio (Ap) = 0.1000
Summary of stream data:
Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In /Hr)
1 470.440 24.37 2.083
2 11.955 9.82 3.593
„d Qmax (1) _
1.000 * 1.000 * 470.440) +
0.568 * 1.000 * 11.955) + = 477.229
Qmax(2) _
di 1.879 * 0.403 * 470.440) +
1.000 * 1.000 * 11.955) + = 368.082
Total of 2 streams to confluence:
Flow rates before confluence point:
.� 470.440 11.955
Maximum flow rates at confluence using above data:
.� 477.229 368.082
Area of streams before confluence:
.., 286.600 3.800
Effective area values after confluence:
290.400 119.283
Results of confluence:
Total flow rate = 477.229(CFS)
Time of concentration = 24.369 min.
Effective stream area after confluence = 290.400(Ac.)
Study area average Pervious fraction(Ap) = 0.368
Study area average soil loss rate(Fm) = 0.360(In /Hr)
+r. Study area total (this main stream) = 290.40(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 136.100 to Point /Station 137.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size)
0” * * **
,w Upstream point /station elevation = 1242.00(Ft.)
Downstream point /station elevation = 1238.50(Ft.)
Pipe length = 150.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 477.229(CFS)
Nearest computed pipe diameter = 63.00(In.)
Calculated individual pipe flow = 477.229(CFS)
Normal flow depth in pipe = 55.31(In.)
Flow top width inside pipe = 41.24(In.)
Critical depth could not be calculated.
Pipe flow velocity = 23.69(Ft/s)
Travel time through pipe = 0.11 min.
Time of concentration (TC) = 24.47 min.
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 136.100 to Point /Station 137.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 290.400(Ac.)
Runoff from this stream = 477.229(CFS)
Time of concentration = 24.47 min.
Rainfall intensity = 2.077(In /Hr)
Area averaged loss rate (Fm) = 0.3602(In /Hr)
�! Area averaged Pervious ratio (Ap) = 0.3684
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 137.000 to Point /Station 137.100
* * ** INITIAL AREA EVALUATION * * **
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
H
F
e
F
d
w
a
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.196(In /Hr)
Initial subarea data:
Initial area flow distance = 750.000(Ft.)
Top (of initial area) elevation = 1247.000(Ft.)
Bottom (of initial area) elevation = 1238.500(Ft.)
Difference in elevation = 8.500(Ft.)
Slope = 0.01133 s(%)= 1.13
TC = k (0.324) *[(length ^3) /(elevation change)] ^0.2
Initial area time of concentration = 11.212 min.
Rainfall intensity = 3.318(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.847
S ubarea runoff = 16.301(CF
ToHad init stream area = 5.800(Ac.)
Pervious area fraction = 0.200
Initial area Fm value = 0.196(In /Hr)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 137.000 to Point /Station 137.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 2
Stream flow area = 5.800(Ac.)
Runoff from this stream = 16.301(CFS)
Time of concentration = 11.21 min.
Rainfall intensity = 3.318(In /Hr)
Area averaged loss rate (Fm) = 0.1956(In /Hr)
Area averaged Pervious ratio (Ap) = 0.2000
Summary of stream data:
Stream
Flow rate
TC
Rainfall Intensity
No.
(CFS)
(min)
(In /Hr)
1
477.229
24.47
2.077
2
16.301
11.21
3.318
Qmax(1)
_
Study area average soil loss rate(Fm) _
a�
1.000 *
1.000 *
477.229) +
0.603 *
1.000 *
16.301) + = 487.052
Qmax(2) _
1.723 * 0.458 * 477.229) +
1.000 * 1.000 * 16.301) + = 392.938
Total of 2 streams to confluence:
Flow rates before confluence point:
477.229 16.301
Maximum flow rates at confluence using above data:
487.052 392.938
00
296.200(Ac.)
0.365
0.357(In /Hr)
296.20(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Area of streams before confluence:
290.400 5.800
Effective area values after confluence:
296.200 138.841
Results of confluence:
Total flow rate = 487.052(CFS)
Time of concentration = 24.474 min.
Effective stream area after confluence =
Study area average Pervious fraction(Ap)
Study area average soil loss rate(Fm) _
a�
Study area total (this main stream) _
00
296.200(Ac.)
0.365
0.357(In /Hr)
296.20(Ac.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
40 Process from Point /Station 137.100 to Point /Station 139.100
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 1238.50(Ft.)
Downstream point /station elevation = 1230.60(Ft.)
Pipe length = 660.00(Ft.) Manning's N = 0.013
No. of pipes = 1 Required pipe flow = 487.052(CFS)
Nearest computed pipe diameter = 72.00(In.)
Calculated individual pipe flow = 487.052(CFS)
Normal flow depth in pipe = 63.00(In.)
Flow top width inside pipe = 47.62(In.)
do Critical Depth = 67.67(In.)
Pipe flow velocity = 18.56(Ft/s)
*�+ Travel time through pipe = 0.59 min.
rri
Time of concentration (TC) = 25.07 min.
0M + .+.}. ..+.}.+.{. .- F-}--}-.-}--{-+-}-.-}--}--{--}--}-+-+-- f-+++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
rrr Process from Point /Station 137.100 to Point /Station 139.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
Along Main Stream number: 1 in normal stream number 1
Stream flow area = 296.200(Ac.)
Runoff from this stream = 487.052(CFS)
Time of concentration = 25.07 min.
Rainfall intensity = 2.048(In /Hr)
Area averaged loss rate (Fm) = 0.3570(In /Hr)
,., Area averaged Pervious ratio (Ap) = 0.3651
40
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 138.000 to Point /Station 138.100
arf
* * ** INITIAL AREA EVALUATION * * **
APARTMENT subarea type
Decimal fraction soil group A = 1.000
.,r Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
., Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.196(In /Hr)
Initial subarea data:
Initial area flow distance = 750.000(Ft.)
Top (of initial area) elevation = 1242.000(Ft.)
Bottom (of initial area) elevation = 1232.200(Ft.)
Difference in elevation = 9.800(Ft.)
Slope = 0.01307 s( %)= 1.31
TC = k(0.324) *[(length ^3) /(elevation change)] ^0;2
Initial area time of concentration = 10.898 min.
MR Rainfall intensity = 3.375(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area (Q =KCIA) is C = 0.848
Subarea runoff = 16.599(CFS)
Total initial stream area = 5.800(Ac.)
Pervious area fraction = 0.200
ar Initial area Fm value = 0.196(In /Hr)
I"
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 138.100 to Point /Station 139.100
* * ** STREET FLOW TRAVEL TIME + SUBAREA FLOW ADDITION * * **
Top of street segment elevation = 1232.200(Ft.)
End of street segment elevation = 1230.600(Ft.)
,,,� Length of street segment = 300.000(Ft.)
,r
�r.
..r
rn
.r+
Height of curb above gutter flowline = 8.0(In.)
Width of half street (curb to crown) = 32.000(Ft.)
Distance from crown to crossfall grade break = 24.000(Ft.)
Slope from gutter to grade break (v /hz) = 0.040
Slope from grade break to crown (v /hz) = 0.020
Street flow is on [1] side(s) of the street
Distance from curb to property line = 20.000(Ft.)
Slope from curb to property line (v /hz) = 0.020
Gutter width = 1.500(Ft.)
Gutter hike from flowline = 1.320(In.)
Manning's N in gutter = 0.0130
Manning's N from gutter to grade break = 0.0150
Manning's N from grade break to crown = 0.0150
Estimated mean flow rate at midpoint of street =
Depth of flow = 0.705(Ft.)
Average velocity = 3.306(Ft /s)
Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property =
Streetflow hydraulics at midpoint of street travel:
Halfstreet flow width = 24.747(Ft.)
Flow velocity = 3.31(Ft /s)
Travel time = 1.51 min. TC = 12.41 min.
Adding area flow to street
APARTMENT subarea type
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
22.609(CFS)
1.91(Ft.)
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.196(In /Hr)
Rainfall intensity = 3.122(In /Hr) for a 25.0 year storm
'Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.844
�i Subarea runoff = 9.741(CFS) for 4.200(Ac.)
Total runoff = 26.340(CFS) Total area = 10.00(Ac.)
Area averaged Fm value = 0.196(In /Hr)
Street flow at end of street = 26.340(CFS)
Half street flow at end of street = 26.340(CFS)
Depth of flow = 0.742(Ft.)
Average velocity = 3.340(Ft /s)
ON Warning: depth of flow exceeds top of curb
Distance that curb overflow reaches into property = 3.75(Ft.)
..�, Flow width (from curb towards crown)= 26.584(Ft.)
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
�! Process from Point /Station 140.000 to Point /Station 139.100
* * ** SUBAREA FLOW ADDITION * * **
APARTMENT subarea type
Decimal fraction soil group A = 1.000
++ Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
44 Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.2000 Max loss rate(Fm)= 0.196(In /Hr)
Time of concentration = 12.41 min.
Rainfall intensity = 3.122(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.844
Subarea runoff = 4.741(CFS) for 1.800(Ac.)
Total runoff = 31.082(CFS) Total area = 11.80(Ac.)
Area averaged Fm value = 0.196(In /Hr)
�� 7
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 140.000 to Point /Station 139.100
* * ** CONFLUENCE OF MINOR STREAMS * * **
di Along Main Stream number: 1 in normal stream number 2
Stream flow area = 11.800(Ac.)
Runoff from this stream = 31.082(CFS)
Time of concentration = 12.41 min.
Rainfall intensity = 3.122(In /Hr)
Area averaged loss rate (Fm) = 0.1956(In /Hr)
Area averaged Pervious ratio (Ap) = 0.2000
Summary of stream data:
4M Stream Flow rate TC Rainfall Intensity
+■+ No. (CFS) (min) (In /Hr)
1 487.052 25.07 2.048
2 31.082 12.41 3.122
Qmax (1) _
1.000 * 1.000 * 487.052) +
0.633 * 1.000 * 31.082) + = 506.722
Qmax(2) _
..� 1.636 * 0.495 * 487.052) +
1.000 * 1.000 * 31.082) + = 425.456
do
Total of 2 streams to confluence:
^ Flow rates before confluence point:
487.052 31.082
Maximum flow rates at confluence using above data:
506.722 425.456
Area of streams before confluence:
296.200 11.800
Effective area values after confluence:
+ 308.000 158.441
Results of confluence:
Total flow rate = 506.722(CFS)
Time of concentration = 25.067 min.
Effective stream area after confluence = 308.000(Ac.)
irr Study area average Pervious fraction(Ap) = 0.359
Study area average soil loss rate(Fm) = 0.351(In /Hr)
Study area total (this main stream) = 308.00(Ac.)
End of computations, total study area = 308.00 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
' Note: These figures do not consider reduced effective area
effects caused by confluences in the rational equation.
Area averaged pervious area fraction(Ap) = 0.359
Area averaged SCS curve number = 32.0
di
F
0
0
E
ew
ko UNIT HYDROGRAPH AND BASIN ROUTING ANALYSIS
------------------------------------ - - - - --
WITH OVERFLOW FROM BASELINE
Im
lw Q 100 YEAR, 3 HOUR, 6 HOUR & 24 HOUR
------------------------------ - - - - --
rrr
M
OR
ili
ew
t
0
0
0
no
im
m
0
am
Ed
Job No. q
e:2��-5 Date
Sierra En ineerin
CIVIL ENGINEERS • LAND SURVEYORS • LAND PLANNERS
DIVISION OF PROJECT 2000, INC
By Sheet of
T
ST //on� �i /�-� )
J
17,
U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CivilCadd /CivilDesign, 1990, Version 2.2
Study date 4/ 3/91
+++++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
------------------------------------------------------------------ - - - - --
San Bernardino County Synthetic Unit Hydrology Method
Manual date - August 1986
---------------------------7------------------------
UNIT HYDROGRAPH FOR CITRUS AVE STORM DRAIN
POINT OF CONCENTRATION @ CITRUS & ARROW
Q 100 YEAR , 3 HOUR WITH OVERFLOW FROM BASELINE
FILE NAME TON13
-------------------------------------------------------------- - - - - --
Storm Event Year = 100
Antecedent Moisture Condition = 3
,.� Area averaged rainfall intensity isohyetal data:
Sub -Area Duration Intensity
(acres) (hours) (inches)
Rainfall data for year 100
308.80 1 1.52
--------------------------------------------------------------------
Rainfall data for year 100
308.80 6 3.87
--------------------------------------------------------------------
Rainfall data for year 100
308.80 24 9.25
�!! =-------------------------------------------------------------------
+++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
* * * * * * ** Area - averaged max loss rate, Fm * * * * * * **
SCS curve SCS curve Area Area Fp(Fig c6) Ap Fm
No.(AMCII) No.(AMC 3) (Acres) Fraction (In /Hr) (dec.) (in /hr)
32.0 52.0 308.80 1.000 0.785 0.406 0.319
Area - averaged adjusted loss rate Fm (In /Hr)= 0.319
* * * * * * * ** Area - Averaged low loss rate fraction, Yb * * * * * * * * **
Area Area SCS cn SCS cn S Pervious
(acres) fract (AMC2) (AMC3) yield fr
125.37 0.406 32.0 52.0 9.23 0.356
183.43 0.594 98.0 98.0 0.20 0.960
Area - averaged catchment yield fraction, Y = 0.715
Area - averaged low loss fraction, Yb = 0.285
+++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
User entry of time of concentration = 0.583 (hours)
Watershed area = 308.80 acres
Catchment Lag time = 0.466 hours
Unit interval = 5.000 minutes
Unit interval percentage of lag time = 17.8827
Hydrograph baseflow = 0.00 (CFS)
Average maximum watershed loss rate(Fm) = 0.319 (In /hr)
Peak Unit Adjusted mass rainfall Unit rainfall
Number (inches) (inches)
1 0.55 0.55
a 2 0.73 0.18
3 . 0.86 0.13
4 0.97 0.10
*� 5 1.06 0.09
6 1.14 0.08
7 1.21 0.07
1.27 0.07
9 1.34 0.06
10 1.39 0.06
11 1.45 0.05
12 1.50 0.05
13 1.56 0.07
14 1.63 0.06
15 1.69 0.06
di /S2
Average low loss rate fraction (Yb) = 0
0.285 (decimal)
Valley Developed S -Graph Selected
Computed peak 5- m
minute rainfall = 0.563 i
inches
Computed peak 30- m
minute rainfall = 1.152 inches
Specified peak 1
1 -hour rainfall = 1.520 inches
Computed peak 3 -hour rainfall = 2.696 inches
Specified peak 6
6 -hour rainfall = 3.870 inches
Specified peak 2
24 -hour rainfall = 9.250 i
inches
Rainfall depth a
area reduction factors:
Using a total area of 308.80 a
5- minute factor = 0.986 Adjusted r
rainfall = 0.554 i
inches
.. 5
30- minute factor = 0.986 Adjusted r
rainfall = 1.135 i
inches
1 -hour factor =
= 0.986 Adjusted r
rainfall = 1.498 i
inches
3 -hour factor =
= 0.998 Adjusted r
rainfall = 2.691 i
inches
6 -hour factor =
= 0.999 Adjusted r
rainfall = 3.866 i
inches
24 -hour factor =
= 1.000 Adjusted rainfall 9.246 i
inches
--------------------------------------------------------------------
"^ U
U n i t H y d
d r o g r a p h
wr +
++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Interval '
'S' Graph U
Unit Hydrograph
.� N
Number M
Mean values (
(CFS)
-------------------------------------------------
1 1
1.044, 3
38.973
2 4
4.025 1
111.356
3 1
10.660 2
247.781
4 2
20.857 3
380.798
5 3
33.055 4
455.540
6 4
47.977 5
557.264
7 6
64.025 5
599.338
8 7
75.476 4
427.635
9 8
83.392 2
295.622
rw 1
10 8
89.255 2
218.981
11 9
92.772 1
131.329
12 9
95.430 9
99.278
13 9
97.085 6
61.807
,. 1
14 9
98.094 3
37.654
++� 1
15
98.467
13.956
16 9
98.789 1
12.022
17 9
99.111 1
12.021
18 9
99.433 1
12.017
19 9
99.755 1
12.015
20 1
100.000 9
9.161
------------
---------------------------------------------------------
dd
16
1.75
0.06
17
1.80
0.06
18
1.86
0.06
19
1.91
0.05
20
1.97
0.05
21
2.02
0.05
41
22
2.07
0.05
23
2.12
0.05
24
2.17
0.05
25
2.22
0.05
26
2.26
0.05
27
2.31
0.05
28
2.35
0.05
29
2.40
0.
30
2.44
0.04
31
2.48
0.04
32
2.53
0.04
33
2.57
0.04
34
2.61
0.04
35
2.65
0.04
36
2.69
0.04
---------------------------------------------------------------------
Unit
Unit
Unit
Effective
Period
Rainfall
Soil -Loss
Rainfall
..
(number)
(inches)
(inches)
(inches)
---------------------------------------------------------------------
1
0.0401
0.0114
0.0287
2
0.0407
0.0116
0.0291
.�
3
0.0418
0.0119
0.0299
w
4
0.0424
0.0121
0.0303
5
0.0437
0.0125
0.0313
+�
6
0.0444
0.0127
0.0318
7
0.0460
0.0131
0.0329
8
0.0468
0.0133
0.0335
9
0.0486
0.0139
0.0348
10
0.0496
0.0141
0.0355
r�
11
0.0518
0.0148
0.0371
12
0.0531
0.0151
0.0379
13
0.0558
0.0159
0.0399
14
0.0574
0.0163
0.0410
15
0.0609
0.0174
0.0436
16
0.0630
0.0180
0.0451
�+
1
0.0512
0.0146
0.0366
18
0.0541
0.0154
0.0387
19
0.0614
0.0175
0.0439
20
0.0662
0.0189
0.0474
21
0.0798
0.0228
0.0571
22
0.0901
0.0257
0.0644
23
0.1288
0.0266
0.1022
w�
24
0.1771
0.0266
0.1506
25
0.5544
0.0266
0.5279
di
26
0.1049
0.0266
0.0784
27
0.0722
0.0206
0.0516
"q
28
0.0575
0.0164
0.0411
29
0.0653
0.0186
0.0467
30
0.0591
0.0168
0.0422
31
0.0544
0.0155
0.0389
32
0.0507
0.0144
0.0363
33
0.0477
0.0136
0.0341
34
0.0452
0.0129
0.0323
35
0.0431
0.0123
0.0308
36
0.0412
0.0117
0.0295
--------------------------------------------------------------------
' -
Total
soil rain
loss =
0,60 (In.)
~~
Total
effective
runoff =
2.09 (In.)
_------- ___
----------------------------------------------------------
Total
soil-loss
volume =
15.3873 (Acre -Feet)
^
Total
storm runoff
volume
= 53.8316 (Acre-Feet)
_____________________________________________________________________
�
+ff++++++f+++f++f++fff+f++f+f++ff+fff++f+f++f+f+f++f++++f
3-BOUl{
u �
uz��
n�
I��oo��
B��c ��rap h
~�
____________________________________________________________________
Bvdrograob in
5 Minute intervals (CFS)
_
qqTizne(lx+zo)
\/c»lumeu/AIr\
{}(CIrS)
O______l5O.O_____3OO,O_____45O.O_____6OO.O
1 __________________________-____-
__--
di
O+ 5
0.0077
1.12
OfIO
0.0375
4.33
Q
0fI5
0,I168
1I.5I
Q
0f20
0,2737
32.64
\/{2
0+35
0.52I6
36.14
"V O
0f30
0.8856
53.85
\/ O
0+35
1.3754
7I.13
w�
0+40
I.9603
84,92
0+45
2.6167
95.3I
~�
0f50
3.33I7
103.82
\/ Q
0+55
4.0903
1I0,I4
V (]
I+ O
4.8879
115.82
\/ O
l+ 5
5.7195
I20.75
\/ C}
I+IO
6.5835
135.21
\/ Q
w�
1+I5
7.4749
139.57
\/ Q
If20
8.3990
134,19
\/ Q
w�
1+35
9.3553
I38.86
\/ D
If30
10.34I9
I43.26
\/ O
1+35
I1.3531
I46.82
VQ
I+40
12.3838
I49.65
C)
If45
13.4354
152.70
\/O
m�
1+50
I4.51I9
156.31
Q
1+55
15.6344
163.97
QV
2+ O
I6.8618
178.22
QV
`
2+ 5
18.3724
219.34
VQ
W
3+10
20.3I94
283.70
\/ Q
2+I5
22.8913
373.43
\/
Q
2+30
26.0308
455.86
\/
'
3f25
29.5147
505.87
v
w
m�
2f30
33.2981
549.34
\y
Q
2f35
37.0515
545.00
\7
Q
2+40
40.I005
442.71
Q
2f45
43,5580
356.84
Q
\/
--
2+50
44.6150
298.68
Q
v
-"
2+55
46.2853
343.53
C}
«
�
3f O
~
47,7�43
2Il.8�
C}
V
~~
3f 5
48.9862
180.33
O
3+10
50.0526
I54.84
V
V
3f15
5O.B383
128.61
Q
�
3+30
51.6974
I10,22
�2
V
,V
3+25
52.3316
93.09
Q
'
\/
3f30
53.8280
72.O7
-
�
V
j�
3f35
53.l8l2
51.39
Q
V
3+40
53.431I
34.83
Q
V
3+45
53.5631
20.62
. �]
V
3+50
53.6542
13.22
Q
V
�@
o�
3f55
53.7153 7l53
8 . 87
Q
V
4+ O
53.7544
5.68
Q
|
|
|
\/|
|
4+ 53.7794
2 . G3
{}
' -
MR ------------------ --------
m
mi
an
go
on
ad
ON
r
om
go
MR
iw
ON
Ii
go
err
�r
0
ki
V
4 +10
53.7957
2.37
Q
V
4 +15
53.8085
1.85
Q
V
4 +20
53.8183
1.43
Q
4 +25
53.8253
1.02
0.64
Q
Q
V
4 +30
53.8297
V
4 +35
53.8316
0.27
Q
MR ------------------ --------
m
mi
an
go
on
ad
ON
r
om
go
MR
iw
ON
Ii
go
err
�r
0
ki
di U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CivilCadd /CivilDesign, 1990, Version 2.2
Study date 4/ 3/91
+++++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
rr San Bernardino County Synthetic Unit Hydrology Method
Manual date - August 1986 --- - - - - --
UNIT HYDROGRAPH FOR CITRUS AVE STORM DRAIN
POINT OF CONCENTRATION @ CITRUS & ARROW
Q 100 YEAR, 6 HOUR WITH OVERFLOW FROM BASELINE
FILE NAME : TON16
-----
---------------------------------
Storm Event Year = 100
+ Antecedent Moisture Condition = 3
*�!
Area averaged rainfall
intensity
isohyetal data:
Intensity
Sub -Area
Duration
(hours)
(inches)
(acres)
Rainfall data for year
100
1.52
308.80
1
- - ------
---------------------
Rainfall data for year
100
3.87
- ---------------------------
-----------
Rainfall data for year
100
9.25
308.80
24
---------------
--------------------------------------
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
�j
+++++++++++++++++++++++++++++++++++++
* * * * * * ** Area - averaged
max loss rate, Fm * * * * * * **
f
SCS SCS curve SCS curve
3)
Area
(Acres)
Area Fp(Fig c6)
Fraction (In /Hr)
Ap Fm
(de (in /hr)
No.(AMCII) No.(AMC
308.80
1.000 0.785
0.4400 6 0.319
32.0 52.0
Area - averaged adjusted
loss rate
Fm (In /Hr)= 0.319
* * * * * * * ** Area - Averaged
low loss
rate fraction, Yb * * * * * * * * **
Area Area
SCS cn
AMC2)
SCS cn S
(AMC3)
Pervious
yield fr
(acres) fract
125.37 0.406
32.0
52.0 9.23
0.356
0.960
183.43 0.594
98.0
98.0 0.20
H
Area - averaged catchment yield fraction, Y = 0.715
Area - averaged low loss fraction, Yb = 0.285
+++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
User entry of time of concentration = 0.583 (hours)
Watershed area = 308.80 acres
Catchment Lag time = 0.466 hours
Unit interval = 5.000 minutes
Unit interval percentage of lag time = 17.8827
Hydrograph baseflow = 0.00 (CFS) hr In
Average maximum watershed loss rate(Fm) _ 0.319 ( )
�J
,d
Average low loss rate fraction (Yb) =
0.285 (decimal)
Valley Developed S -Graph Selected
Computed peak 5- minute rainfall = 0.563
inches
Computed peak
30- minute rainfall = 1.152 inches
++
Specified peak
1 -hour rainfall = 1.520 inches
Computed peak
3 -hour rainfall = 2.696 inches
*�
Specified peak
6 -hour rainfall = 3.870 inches
Specified peak
24 -hour rainfall = 9.250 inches
'
Rainfall depth
area reduction factors:
Using a total
area of 308.80 acres (Ref: fig. E -4)
5- minute factor
= 0.986 Adjusted
rainfall = 0.554
inches
30- minute factor
= 0.986 Adjusted
rainfall = 1.135
inches
4
1 -hour factor
= 0.986 Adjusted
rainfall = 1.498
inches
3 -hour factor
= 0.998 Adjusted
rainfall = 2.691
inches
6 -hour factor
= 0.999 Adjusted
rainfall = 3.866
inches
24 -hour factor
= 1.000 Ad rainfall 9.246
inches
do ------------------------------ -j-------------------------------------
U n i t H y
d r o g r a p h
++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + +
+ + + + + + + + + + + + ++
Interval
'S' Graph
Unit Hydrograph
••
Number
Mean values
(CFS)
-------------------------------------,--------
1
1.044
38.973
2
4.025
111.356
3
10.660
247.781
4
20.857
380.798
5
33.055
455.540
6
47.977
557.264
7
64.025
599.338
+ri
8
75.476
427.635
9
83.392
295.622
10
89.255
218.981
11
92.772
131.329
12
95.430
99.278
13
97.085
61.807
14
98.094
37.654
••
15
98.467
13.956
16
98.789
12.022
••
17
99.111
12.021
18
99.433
12.017
19
99.755
12.015
20
100.000
9.161
------------------------------------------------
Peak Unit Adjusted mass rainfall
Unit rainfall
Number
(inches)
(inches)
1
0.55
0.55
,
0.73
0.18
3
0.86
0.13
4
0.97
0.10
4 0
5
1.06
0.09
6
1.14
0.08
7
1.21
0.07
8
1.27
0.07
9
1.34
0.06
10
1.39
0.06
11
1.45
0.05
12
1.50
0.05
13
1.56
0.07
14
1.63
0.06
15
1.69
0.06
di
16-7
d
0
+rr
r
t.r
.r
rrr
rrr
rr
0
E
9
16
1.75
0.06
17
1.80
0.06
18
1.86
0.06
19
1.91
0.05
20
1.97
0.05
21
2.02
0.05
22
2.07
0.05
23
2.12
0.05
24
2.17
0.05
25
2.22
0.05
26
2.26
0.05
27
2.31
0.05
28
2.35
0.05
29
2.40
0.04
30
2.44
0.04
31
2.48
0.04
32
2.53
0.04
33
2.57
0.04
34
2.61
0.04
35
2.65
0.04
36
2.69
0.04
37
2.73
0.04
38
2.77
0.04
39
2.81
0.04
40
2.84
0.04
41
2.88
0.04
42
2.92
0.04
43
2.95
0.04
44
2.99
0.04
45
3.02
0.04
46
3.06
0.03
47
3.09
0.03
48
3.13
0.03
49
3.16
0.03
50
3.20
0.03
51
3.23
0.03
52
3.26
0.03
53
3.29
0.03
54
3.33
0.03
55
3.36
0.03
56
3.39
0.03
57
3.42
0.03
58
3.45
0.03
59
3.48
0.03
60
3.51
0.03
61
3.55
0.03
62
3.58
0.03
63
3.61
0.03
64
3.64
0.03
65
3.66
0.03
66
3.69
0.03
67
3.72
0.03
68
3.75
0.03
69
3.78
0.03
70
3.81
0.03
71
3.84
0.03
72
3.87
0.03
---------------------------------------
Unit
Unit
Unit
Effective
Period
Rainfall
Soil -Loss
Rainfall
(number)
(inches)
(inches)
(inches)
------------------------------------
1
0.0282
0.0080
0.0201
2
0.0284
0.0081
0.0203
/j 2�
Or- ONO 0ON1n[-HMmom r -T -101MM MG1lnC0mHMMO O V-I Or-mg4l H C TNod1d 'O Hr- Nd1MHMCOm Mr- MONO
0 0 r- Ii-- Ir-IHNNNNMMMd'qcTd'0 lP)0%Dr m0H HNMd' Lnt- r- M --IM M 0MM( 0r-M r-iH0NM0O zPN 00 r- 0 0 44'M
N N N N N N N N N N N N N N N N N N N N N N N N N M m M M f') M M M M M d' d' d M M d' d' U) w O In N t- In d' d' d' M M M m M N N N N N N N
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 r-IH n O O O O O O O O O O O O O O O O O
NNd d'10�000C00riNMm%.0Mmr- INgzr0M0 qcT 0 0 r-I m r- r-i m m H M H mmg;'00l.;T nmMr-010tO�o0 qr0 M0q*l0Mm[-Hr-MOt"d'
W W W W W W W W Q1 O10101Olmmm000000 -I r- HNNNMMMd d'Lf)tn0t-W d'U)I`W N000 0%001000WU)d'MNNr- H000(nM
OOOOOOOOO0000000 i r4Hr-i IH r-Iriri H - Irir- 4HHrg HHHr - IHHr - NNNN NNNririri - Irir - Ir - Iririr - H HH00
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
w 0 d' WO 0 m r- 0 m w m 0 m 0 N "D m r% m 0Mmr-Ir r r0 w0 %D M H Wd.M0Nr-I rNODe-ICOr- Id'mNLnMrid l-t-NH"w0 *- Ho)(no)
CO M0)0)000Hr- Ir- iNNMMd d LnU)%,o 0t W 0OriNMd'1010 co m H Cn 0 t-O Cl) H%ll H 0M000(-d'd NI- UIO)d 0r Cl) H 00 t�0d'MN
NNNNM MMMMMMM Cl) MMMMMMMMMd d d d'd d'd d d d Ln Lc) LC) L 0 kDLn Lo 1.o0 - OINI� Ln Ot , Ln10U) Ln LI)d d'd d' MMMMMM
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 r-IH n H O O O O O O O O O O O O O O O O
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
mntM%.OL- W M0HNMd'U)\0t-W m0HNM gr00L moHNm , :rm Ot- W moHNm- cTmkOI`000 gHNMd mw r W m - INm -:rm O
Hr-iririr - Hr -Irir- HNNNNNNNNNNMMMMMMMMMMd 'd ' d'd ' d ' d ' d'd'd'd U)tnLn
qq
i
67
0.0321
0.0091
0.0229
68
0.0313
0.0089
0.0223
Q
69
0.0305
0.0087
0.0218
8.05
70
0.0298
0.0085
0.0213
0.1905
71
0.0292
0.0083
0.0209
0 +25
72
0.0286
0.0081
0.0204
0 +30
0.6154
36.58
V Q
'�
-------
Total
-------------------------------------------------------------
soil rain loss =
0.93 (In.)
V
Q
Total
effective runoff =
2.93 (In.)
58.13
.""
Q
------------------------------------------------------
0 +45'
1.7990
64.70
---------------
Total
soil -loss volume =
24.0053 (Acre -Feet)
0 +50
..,
Total
storm runoff volume
= 75.4476 (Acre -Feet)
dd
0 +55
--------------------------------------
+++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
rr
V
6 - H
O U R S T 0 R M
1+ 0,
3.3076
76.04
R u n o f
f H y d r o g r a p h
"*
--------------------------------------------------------------------
Hydrograph in
5 Minute intervals (CFS)
V Q
1 +10
---------------------------------
- - - - --
Time(h +m) Volume(AF) Q(CFS) 0 150.0 300.0 450.0 600.0
�r----------------------------------------- ---- ----- ---------- ----- - - - - -
- 1
V
V
V
V
Q V
Q V
0+ 5
0.0054
0.79
Q
.n
0 +10
0.0263
3.03
Q
0 +15
0.0817
8.05
Q
0 +20
0.1905
15.79
VQ
0 +25
0.3635
25.12
VQ
0 +30
0.6154
36.58
V Q
0 +35
0.9530
49.02
V
Q
0 +40
1.3534
58.13
V
Q
0 +45'
1.7990
64.70
V
Q
0 +50
2.2797
69.80
V
Q
dd
0 +55
2.7839
73.22
V
Q
1+ 0,
3.3076
76.04
V
Q
1+ 5
3.8459
78.16
V Q
1 +10
4.3957
79.83
V Q
1 +15
4.9541
81.08
V Q
1 +20
5.5210
82.32
V Q
Om
1 +25
6.0969
83.61
V Q
1 +30
6.6819
84.94
V Q
1 +35
7.2764
86.32
V Q
1 +40
7.8803
87.69
VQ
1 +45
8.4929
88.94
VQ
1 +50
9.1143
90.24
V Q
1 +55
9.7452
91.60
VQ
2+ 0
10.3859
93.03
VQ
2+ 5
11.0371
94.55
VQ
2 +10
11.6996
96.19
Q
2 +15
12.3744
97.99
Q
2 +20
13.0628
99.96
Q
2 +25
13.7658
102.07
QV
2 +30
14.4845
104.35
QV
2 +35
15.2198
106.78
QV
2 +40
15.9722
109.24
QV
2 +45
16.7421
111.80
QV
2 +50
17.5306
114.48
Q
2 +55
18.3385
117.31
Q
Q
3+ 0
19.1674
120.35
3+ 5
20.0188
123.63
Q
3 +10
20.8947
127.19
Q
3 +15
21.7976
131.09
Q
3 +20
22.7300
135.40
3 +25
23.6925
139.75
/`o
V
V
V
V
Q V
Q V
3 +30 24.6831 143.83 Q V
3 +35 25.6960 147.07 Q V
3 +40 26.7267 149.65 Q V
3 +45 27.7783 152.70 Q V
3 +50 28.8549 156.31 Q V
3 +55 29.9773 162.97 Q V
4+ 0 31.2047 178.22 Q V
4+ 5 32.7153 219.34 Q V
4 +10 34.6623 282.70 Q
4 +15 37.2342 373.43 V Q
4 +20 40.3737 455.86 V Q
4 +25 43.8577 505.87 V Q
4 +30 47.6410 549.34 V Q
4 +35 51.3944 545.00 V Q
4 +40 54.4434 442.71 VQ
4 +45 56.9009 356.84 Q V
4 +50 58.9579 298.68 Q V
4 +55 60.6282 242.53 Q V
5+ 0 62.0872 211.84 Q V
5+ 5 63.3366 181.41 Q V
5 +10 64.4314 158.97 Q V
5 +15 65.3920 139.47 Q V
5 +20 66.2960 131.26 Q V
5 +25 67.1572 125.05 Q V
5 +30 67.9792 119.36 Q V
5 +35 68.7618 113.62 Q V
5 +40 69.4986 106.99 Q V
5 +45 70.1784 98.70 Q V
5 +50 70.8326 94.99 Q V
5 +55 71.4654 91.89 Q V
6+ 0 72.0793 89.14 Q V
6+ 5 72.6702 85.79 Q V
6 +10 73.2298 81.25 Q V
6 +15 73.7410 74.23 Q V
6 +20 74.1873 64.80 Q V
6 +25 74.5603 54.16 Q V
6 +30 74.8479 41.76 Q V
6 +35 75.0464 28.82 Q V
6 +40 75.1815 19.62 Q V
6 +45 75.2729 13.27 Q V
6 +50 75.3321 8.59 Q V
6 +55 75.3718 5.77 Q V
7+ 0 75.3970 3.66 Q V
7+ 5 75.4131 2.34 Q V
7 +10 75.4236 1.53 Q V
7 +15 75.4320 1.22 Q V
7 +20 75.4386 0.95 Q V
7 +25 75.4433 0.69 Q V
7 +30 75.4463 0.44 Q V
7 +35 75.4476 0.19 Q V
/6/
U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CivilCadd /CivilDesign, 1990, Version 2.2
Study date 4/ 3/91
+++++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
------------------------------------------------------------------ - - - - --
to San Bernardino County Synthetic Unit Hydrology Method
Manual date - August 1986
---------------------------------------------------------------------
UNIT HYDROGRAPH FOR CITRUS AVE STORM DRAIN
POINT OF CONCENTRATION @ CITRUS & ARROW
Q 100 YEAR, 24 HOUR WITH OVERFLOW FROM BASELINE
'*! FILE NAME : TON124
Storm Event Year = 100
Antecedent Moisture Condition = 3
+� Area averaged rainfall intensity isohyetal data:
Sub -Area Duration Intensity
(acres) (hours) (inches)
Rainfall data for year 100
308.80 1 1.52
--------------------------------------------------------------------
Rainfall data for year 100
308.80 6 3.87
--------------------------------------------------------------------
di Rainfall data for year 100
308.80 24 9.25
•w --------------------------------------------------------------------
in j +++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
* * * * * * ** Area- averaged max loss rate, Fm * * * * * * **
SCS curve SCS curve Area Area Fp(Fig c6) Ap Fm
*� No.(AMCII) No.(AMC 3) (Acres) Fraction (In /Hr) (dec.) (in /hr)
32.0 52.0 308.80 1.000 0.785 0.406 0.319
Area - averaged adjusted loss rate Fm (In /Hr)= 0.319
* * * * * * * ** Area - Averaged low loss rate fraction, Yb * * * * * * * * **
Area Area SCS cn SCS cn S Pervious
(acres) fract (AMC2) (AMC3) yield fr
do 125.37 0.406 32.0 52.0 9.23 0.356
183.43 0.594 98.0 98.0 0.20 0.960
Area - averaged catchment yield fraction, Y = 0.715
Area - averaged low loss fraction, Yb = 0.285
+++++++++++++++++++++++++++++++++++++++ + + + + +
-I-... + + + + + + + + + + + + + + + + + ++
User entry of time of concentration = 0.583 (hours)
Watershed area = 308.80 acres
Catchment Lag time = 0.466 hours
Unit interval = 5.000 minutes
Unit interval percentage of lag time = 17.8827
Hydrograph baseflow = 0.00 (CFS)
Average maximum watershed loss rate(Fm) = 0.319 (In /hr)
4 ;z
.r 43
Average low loss
rate fraction (Yb)
= 0.285 (decimal)
Valley Developed
S -Graph Selected
Computed peak
5- minute rainfall = 0.563 inches
Computed peak
30- minute rainfall = 1.152 inches
+d
Specified peak
1 -hour rainfall = 1.520 inches
Computed peak
3 -hour rainfall = 2.696 inches
*�
Specified peak
6 -hour rainfall = 3.870 inches
di
Specified peak
24 -hour rainfall = 9.250 inches
Rainfall depth
area reduction factors:
Using a total
area of 308.80 acres (Ref: fig. E -4)
5- minute factor = 0.986 Adjusted
rainfall = 0.554
inches
30- minute factor = 0.986 Adjusted
rainfall = 1.135
inches
1 -hour factor
= 0.9.86 Adjusted
rainfall = 1.498
inches
3 -hour factor
= 0.998 Adjusted
rainfall = 2.691
inches
6 -hour factor
= 0.999 Adjusted
rainfall = 3.866
inches
24 -hour factor = 1.000 Adjusted rainfall = 9.246
inches
---------------------------------------------------------
------------
"""
U n i t H y
d r o g r a p h
,rr
++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Interval
'S' Graph
Unit Hydrograph
Number
Mean values
(CFS)
'�
---------------------------------------------------------
1
1.044
38.973
2
4.025
111.356
3
10.660
247.781
4
20.857
380.798
5
33.055
455.540
6
47.977
557.264
7
64.025
599.338
'w
8
75.476
427.635
9
83.392
295.622
at
10
89.255
218.981
11
92.772
131.329
W
12
95.430
99.278
13
97.085
61.807
14
98.094
37.654
+�+
15
98.467
13.956
16
98.789
12.022
••
17
99.111
12.021
18
99.433
12.017
19
99.755
12.015
20
100.000
9.161
---------------
------------------------------------------------------
+rri
Peak Unit Adjusted mass rainfall
Unit rainfall
Number
(inches)
(inches)
1
0.55
0.55
2
0.73
0.18
dd
3
0.86
0.13
4
0.97
0.10
*�
5
1.06
0.09
6
1.14
0.08
7
1.21
0.07
8
1.27
0.07
9
1.34
0.06
+�
10
1.39
0.06
11
1.45
0.05
12
1.50
0.05
13
1.56
0.07
14
1.63
0.06
15
1.69
0.06
.r 43
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N
E
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272
8.92
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273
8.94
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8.96
0.02
275
8.98
0.02
276
9.00
0.02
277
9.02
0.02
278
9.04
0.02
279
9.06
0.02
280
9.08
0.02
281
9.10
0.02
282
9.12
0.02
283
9.15
0.02
284
9.17
0.02
285
9.19
0.02
286
9.21
0.02
287
9.23
0.02
288
9.25
0.02
---------------------------------------------------------------------
Unit
Unit
Unit
Effective
Period
Rainfall
Soil -Loss
Rainfall
(number)
(inches)
(inches)
(inches)
1
0.0202
0.0058
0.0144
2
0.0202
0.0058
0.0145
3
0.0203
0.0058
0.0145
4
0.0203
0.0058
0.0145
5
0.0204
0.0058
0.0146
6
0.0204
0.0058
0.0146
7
0.0204
0.0058
0.0146
8
0.0205
0.0058
0.0146
9
0.0205
0.0058
0.0147
10
0.0206
0.0059
0.0147
11
0.0206
0.0059
0.0147
12
0.0206
0.0059
0.0148
.13
0.0207
0.0059
0.0148
14
0.0207
0.0059
0.0148
15
0.0208
0.0059
0.0149
16
0.0208
0.0059
0.0149
17
0.0209
0.0059
0.0149
18
0.0209
0.0060
0.0149
19
0.0210
0.0060
0.0150
20
0.0210
0.0060
0.0150
21
0.0211
0.0060
0.0151
22
0.0211
0.0060
0.0151
23
0.0211
0.0060
0.0151
24
0.0212
0.0060
0.0151
25
0.0212
0.0061
0.0152
26
0.0213
0.0061
0.0152
27
0.0213
0.0061
0.0153
28
0.0214
0.0061
0.0153
29
0.0214
0.0061
0.0153
30
0.0215
0.0061
0.0153
31
0.0215
0.0061
0.0154
32
0.0216
0.0061
0.0154
33
0.0216
0.0062
0.0155
34
0.0217
0.0062
0.0155
35
0.0217
0.0062
0.0155
36
0.0218
0.0062
0.0156
37
0.0218
0.0062
0.0156
38
0.0219
0.0062
0.0156
39
0.0219
0.0062
0.0157
40
0.0220
0.0063
0.0157
41
0.0220
0.0063
0.0158
42
0.0221
0.0063
0.0158
/62'
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237
0.0269
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0.0193
238
0.0267
0.0076
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239
0.0265
0.0075
0.0189
240
0.0263
0.0075
0.0188
241
0.0261
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0.0259
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0.0170
256
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0.0233
0.0066
0.0167
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0.0232
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0.0166
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0.0229
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0.0223
0.0064
0.0160
267
0.0222
0.0063
0.0159
268
0.0221
0.0063
0.0158
269
0.0220
0.0063
0.0157
270
0.0219
0.0062
0.0157
271
0.0218
0.0062
0.0156
272
0.0217
0.0062
0.0155
273
0.0216
0.0062
0.0154
274
0.0215
0.0061
0.0154
275
0.0214
0.0061
0.0153
276
0.0213
0.0061
0.0152
277
0.0212
0.0060
0.0152
278
0.0211
0.0060
0.0151
279
0.0210
0.0060
0.0150
280
0.0209
0.0060
0.0150
281
0.0208
0.0059
0.0149
282
0.0208
0.0059
0.0148
283
0.0207
0.0059
0.0148
284
0.0206
0.0059
0.0147
285
0.0205
0.0058
0.0147
286
0.0204
0.0058
0.0146
287
0.0203
0.0058
0.0145
288
0.0203
0.0058
0.0145
----------------------------------
--------------------------------------------
Total soil rain loss = 2.47 (In.)
Total effective runoff = 6.78 (In.)
Total soil -loss volume = 63.4546 (Acre -Feet)
Total storm runoff volume = 174.3967 (Acre -Feet)
+++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
24 - H O U R S T O R M
ti
1
R u n o f f H y d r o g r a p h
Hydrograph in 5 Minute intervals (CFS)
Time h +m Volume AF Q(CFS) 0 150.0 300.0 450.0 0
( ) Volume( AF) Q( ) 45 0 6 0.0
0+ 5 0.0039 0.56 Q
0 +10 0.0188 2.17 Q
0 +15 0.0585 5.76 Q
I 0 +20 0.1361 11.27 Q
0 +25 0.2592 17.87 VQ
0 +30 0.4379 25.96 VQ
0 +35 0.6767 34.66 V
Q
0 +40 0.9584 40.91 V Q
0 +45 1.2701 45.26 V Q
0 +50 1.6042 48.51 V Q
0 +55 1.9520 50.50 V Q
1+ 0 2.3104 52.04 V Q
1+ 5 2.6756 53.03 V Q
1 +10 3.0453 53.68 V Q
1 +15 3.4172 53.99 V Q
1 +20 3.7910 54.28 V Q
1 +25 4.1668 54.56 V Q
1 +30 4.5445 54.85 V Q
1 +35 4.9242 55.13 V Q
1 +40 5.3056 55.38 V Q
1 +45 5.6878 55.50 V Q
1 +50 6.0708 55.61 V Q
1 +55 6.4546 55.73 V Q
2+ 0 6.8393 55.85 V Q
2+ 5 7.2247 55.97 V Q
2 +10 7.6110 56.09 V Q
2 +15 7.9981 56.21 V Q
2 +20 8.3860 56.33 V Q
2 +25 8.7748 56.45 VQ
2 +30 9.1645 56.58 VQ
2 +35 9.5550 56.70 VQ
2 +40 9.9464 56.83 VQ
2 +45 10.3386 56.95 VQ
2 +50 10.7317 57.08 VQ
2 +55 11.1258 57.21 VQ
3+ 0 11.5207 57.34 VQ
3+ 5 11.9165 57.47 VQ
3 +10 12.3132 57.61 VQ
3 +15 12.7109 57.74 VQ
3 +20 13.1095 57.87 Q
3 +25 13.5090 58.01 Q
3 +30 13.9095 58.15 Q
3 +35 14.3109 58.29 Q
3 +40 14.7132 58.43 Q
3 +45 15.1166 58.57 Q
3 +50 15.5209 58.71 Q
3 +55 15.9262 58.85 Q
4+ 0 16.3325 59.00 Q
4+ 5 16.7398 59.14 Q
4 +10 17.1482 59.29 Q
4 +15 17.5575 59.44 QV
4 +20 17.9679 59.59 QV
4 +25 18.3793 59.74 QV
4 +30 18.7918 59.89 QV
4 +35 19.2054 60.05 Q
4 +40 19.6200 60.20 Q
4 +45 20.0357 60.36 Q
/73
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20 +50 156.2521 68.13 Q V
20 +55 156.7179 67.64 Q V
21+ 0 157.1805 67.16 Q V
21+ 5 157.6398 66.70 Q V
21 +10 158.0961 66.25 Q V
21 +15 158.5493 65.80 Q V
I 21 +20 158.9995 65.37 Q V
I 21 +25 159.4468 64.95 Q V
21 +30 159.8913 64.54 Q V
21 +35 160.3331 64.14 Q V
I 21 +40 160.7721 63.75 Q V
21 +45 161.2085 63.37 Q V
21 +50 161.6424 62.99 Q V
21 +55 162.0737 62.63 Q V
22+ 0 162.5025 62.27 Q V
22+ 5 162.9289 61.91 Q V
22 +10 163.3530 61.57 Q V
I 22 +15 163.7747 61.23 Q V
22 +20 164.1941 60.90 Q V
22 +25 164.6113 60.58 Q V
22 +30 165.0264 60.26 Q V
22 +35 165.4392 59.95 Q V
22 +40 165.8500 59.64 Q V
22 +45 166.2587 59.34 Q V
22 +50 166.6654 59.05 Q V
22 +55 167.0701 58.76 Q V
23+ 0 167.4728 58.48 Q V
23+ 5 167.8736 58.20 Q V
23 +10 168.2725 57.92 Q V
23 +15 168.6696 57.65 Q V
23 +20 169.0648 57.39 Q V
23 +25 169.4583 57.13 Q V
23 +30 169.8500 56.87 Q V
23 +35 170.2399 56.62 Q V
23 +40 170.6282 56.37 Q V
23 +45 171.0147 56.13 Q V
23 +50 171.3997 55.89 Q V
23 +55 171.7829 55.65 Q V
24+ 0 172.1646 55.42 Q V
24+ 5 172.5409 54.63 Q V
24 +10 172.9045 52.80 Q V
24 +15 173.2420 49.01 Q V
24 +20 173.5403 43.32 Q V
II 24 +25 173.7922 36.57 Q V
24 +30 173.9877 28.38 Q V
24 +35 174.1228 19.62 Q V
24 +40 174.2149 13.37 Q V
24 +45 174.2773 9.05 Q V
24 +50 174.3176 5.86 Q V
3 24 +55 174.3448 3.94 Q V
25+ 0 174.3619 2.49 Q V
25+ 5 174.3729 1.59 Q V
25 +10 174.3801 1.04 Q V
2 25 +15 174.3858 0.84 Q V
25 +20 174.3904 0.66 Q V
25 +25 174.3937 0.48 Q V
3 25 +30 174.3958 0.31 Q V
25 +35 174.3967 0.13 Q V
Eig
/77
I
FLOOD HYDROGRAPH ROUTING PROGRAM
Copyright (c) Civi1CADD /Civi1DESIGN, 1990
Study date: 4/ 3/91
ROUTING UNIT HYDROGRAPH INTO BASIN
100 YEAR, 3 HOUR
FILE NAME : ROT103
CITRUS AVENUE DETENTION BASIN
* * * * * * * * * * * * * * * * * * * ** HYDROGRAPH INFORMATION * * * * * * * * * * * * * * * * * * * * **
From study /file name: TON13.rte
******* * * * * * * * * * * * * * * * * * * * * *HYDROGRAPH DATA * * * * * * * * * * * * * * * * * * * * * * * * * * **
Number of intervals = 55
Time interval = 5.0 (Min.)
Maximum /Peak flow rate = 549.3 (CFS)
Total volume = 53.83 ( Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol ( Ac.Ft) 0.000 0.000 0.000 0.000 0.000
**************************************** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * **
0
-1--1--{ + ++++ +-F +++ ++ +-I-++ +++ +++++ ++ +++ ++++++++-f ++ i- +-F +++++ ++ ++-f ++++++++ ++++-1 +
ii Process from Point /Station 1.000 to Foint /Station 2.000
* * ** RETARDING BASIN ROUTING * * **
User entry of depth - outflow- storage data
Total number of inflow hydrograph intervals = 55
ii Hydrograph time unit = 5.000 (Min.)
Initial depth in storage basin = 0.00(Ft.)
Initial basin depth = 0.00 (Ft.)
Initial basin storage = 0.00 ( Ac.Ft)
Initial basin outflow = 0.00 (CFS)
il Depth vs. Storage and Depth vs. Discharge data:
Basin Depth Storage Outflow (S- O *dt /2) (S +O *dt /2)
ii (Ft.) (Ac.Ft) (CFS) (Ac.Ft) (Ac.Ft)
0.000 0.000 0.000 0.000 0.000
4.000 5.421 69.487 5.182 5.660
gill 5.000 7.672 83.513 7.384 7.960
6.000 10.036 95.501 9.707 10.365
7.000 12.512 106.144 12.146 12.878
8.000 15.094 115.812 14.695 15.493
9.000 17.788 124.734
17.358 18.218
10.000 20.597 133.058 20.139 21.055
11.000 23.521 140.892 23.036 24.006
rii: 12.000 26.565 148.312 26.054 27.076
13.000 29.739 155.378 29.204 30.274
14.000 33.052 162.137 32.494 33.610
/7
Hydrograph Detention Basin Routing
Graph values: 'I'= unit inflow; '0'= outflow at time shown
Time Inflow Outflow Storage Depth
I (Hours) (CFS) (CFS) (Ac.Ft) .0 137.3 274.7 412.0 549.3 (Ft.)
0.083 1.1 0.0 0.004 0 0.0
0.167 4.3 0.3 0.021 O 0.0
0.250 11.5 0.9 0.072 O 0.1
0.333 22.6 2.3 0.178 OI 0.1
0.417 36.1 4.6 0.357 0 I 0.3
0.500 52.8 8.0 0.620 0 I 0.5
I 0.583 71.1 12.5 0.977 O I 0.7
II 0.667 84.9 18.1 1.409 0 I 1.0
0.750 95.3 24.2 1.884 0 I 1.4
0.833 103.8 30.5 2.382 0 I 1.8
I 0.917 110.1 37.0 2.886 0 I 2.1 E
1.000 115.8 43.4 3.387 0 I 2.5
1.083 120.8 49.7 3.881 0 I 2.9
I 1.167 125.3 55.9 4.364 0 I 3 . 2
1.250 129.6 62.0 4.836 0 I 3.6
1.333 134.2 67.9 5.297 0 I 3.9
1.417 138.9 71.6 5.757 0 I 4.1
I 1.500 143.3 74.5 6.225 0 I 4.4
1.583 146.8 77.5 6.701 0 I 4.6
1.667 149.7 80.4 7.178 0 I 4.8
1.750 152.7 83.4 7.655 0 I 5.0
1.833 156.3 85.9 8.136 0 I 5.2
1.917 163.0 88.4 8.636 0 I 5.4
2.000 178.2 91.2 9.192 0 I 5.6
2.083 219.3 94.9 9.920 0 I 6.0
2.167 282.7 99.6 10.979 0 I 6.4
2.250 373.4 106.2 12.530 0 I 7.0
2.333 455.9 114.1 14.627 0 I 7.8 ;.
I 2.417 505.9 122.5 17.124 0 I 8.8
2.500 549.3 130.9 19.885 0 I 9.7
2.583 545.0 138.8 22.725 0 I 10.7
2.667 442.7 144.9 25.149 0 I 11.5
il 2.750 356.8 149.0 26.890 0 I 12.1
2.833 298.7 151.8 28.112 0 I 12.5
2.917 242.5 153.6 28.924 0 I 12.7
I 3.000 211.8 154.7 29.427 0 I 12.9
3.083 180.3 155.3 29.710 OI 13.0
3.167 154.8 155.5 29.794 0 13.0
3.250 128.6 155.3 29.700 I 0 13.0
3.333 110.2 154.7 29.455 I 0 12.9
3.417 92.1 153.9 29.089 I O 12.8
3.500 72.1 152.8 28.597 I 0 12.6
3.583 51.3 151.4 27.974 I 0 12.4
II 3.667 34.8 149.8 27.234 I 0 12.2
3.750 20.6 147.9 26.399 I 0 11.9
3.833 13.2 145.7 25.505 I 0 11.7
3.917 8.9 143.5 24.585 I 0 11.3
4.000 5.7 141.2 23.655 I 0 11.0
4.083 3.6 138.8 22.723 I 0 10.7
I 4.167 2.4 136.3 21.796 I 0 10.4
4.250 1.9 133.8 20.881 I 0 10.1
4.333 1.4 131.2 19.979 I 0 9 . 8
4.417 1.0 128.6 19.093 I 0 9 . 5
4.500 0.6 126.0 18.222 I 0 9.2
4.583 0.3 123.3 17.366 I 0 8.8
4.667 0.0 120.6 16.527 I 0 8.5
3 4.750 0.0 117.8 15.707 I 0 8.2
ry;J
//
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d N01 DMOOII I - OINr m%DO m mm 0ClD%D0%D.R01MN m Nri0ri0wm 1 10 nHHr- O N H N O �Dl00LnMNMlO ri lD Mri000N d'l-
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m H m Q w HmwNInOId'00M00Mw gr-4r-d riO7Od NO w%Dm .:r m r-i 0 m m w r- r- �o U) m ";r d'd MMMNNNNNC -4 a iHr-IHHC- 1ri000
d d MNriri001mwr-r N N N N N r-I r-I H r-i H r-I H 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
H H H H H H H
HNmm m nmmmN C-4 0 mNOLnI- d' 10r-IOM 01 COO1M mr- r- mNr- m 0wr-r-w ON 1n0mwcn CO d'r-Il"d'ricoO od' N 0cor-Ln19T MN r10
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LnN(II 48I�d'r-ICOIn ;c;LnNGONr:c Cc d'O�DMOcOLnc4 -101001DL1 'Nri0010 100I �1Ot0LnLn4d 'd'MMMNNNNNrie-i1i44r- 1r 4
H H 0 0 0 O 01 M M W O O r- r- r- %D %D M M d' d' d' M M M N N N N ri ri H ri ri H ri ri
ri H ri H H ri
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O
O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
M l- 0 M r O M r- 0 M r- O M !` O M !` O M r- O M r O M r- O M r O M r- O M r- 0 M r- O M L- O M r- O M r- O M I- O M r- O M r- O M r- 0 M L- O M
MH0W%DM MH0W0MMH0W0 D0Mr40M%D0Mri0WWLOMri0MWMMH0 W %D MMH0W kD MMc- 40W%DMMH0W%DMMri000
woo or-4N M .I;T In to 10 r - O 00 0 ri N M d' to to w !` m m O O H N M d' to to w r - 0 01 O O rI N M qqr In m w rl O 01 O O T - I N M d' to m 1D r- 0 0 0 0
d d'ln In Ln In In Ln m Ln In to to In t0 %D W %D %D %D W %D %D %D w k D r r r� r r- r r r - r - r- L - r- O M 00 CO O O 0 CO 00 CO CO W O O) O 0)(Y% ON M ON O1 01 O Ol 0 O 0
e -I H
... r`.8 F F j F 71 j j 7-3 1 j t j I a _.. ...,
If I
10.167 0.0 0.9 0.070 0 0.1
10.250 0.0 0.8 0.065 0 0.0
10.333 0.0 0.8 0.059 0 0.0
10.417 0.0 0.7 0.054 0 0.0
10.500 0.0 0.6 0.050 0 0.0
10.583 0.0 0.6 0.045 0 0.0
10.667 0.0 0.5 0.041 0 0.0
10.750 0.0 0.5 0.038 0 0.0
10.833 0.0 0.4 0.035 0 0.0
10.917 0.0 0.4 0.032 0 0.0
11.000 0.0 0.4 0.029 0 0.0
11.083 0.0 0.3 0.027 0 0.0
11.167 0.0 0.3 0.024 0 0.0
11.250 0.0 0.3 0.022 0 0.0
11.333 0.0 0.3 0.020 0 0.0
11.417 0.0 0.2 0.019 0 0.0
11.500 0.0 0.2 0.017 0 0.0
11.583 0.0 0.2 0.016 0 0.0
11.667 0.0 0.2 0.014 0 0.0
11.750 0.0 0.2 0.013 0 0.0
******* * * * * * * * * * * * * * * * * * * * * *HYDROGRAPH DATA * * * * * * * * * * * * * * * * * * * * * * * * * * **
Number of intervals = 141
Time interval = 5.0 (Min.)
Maximum /Peak flow rate = 155.5 (CFS)
Total volume = 53.82 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol ( Ac.Ft) 0.000 0.000 0.000 0.000 0.000
**************************************** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * **
//V
+"
FLOOD HYDROGRAPH ROUTING PROGRAM
Copyright (c) CivilCADD /Civi1DESIGN, 1990
Study date: 4/ 3/91
-----------------------------------------------------
ROUTING UNIT HYDROGRAPH INTO BASIN
100 YEAR, 6 HOUR
rri CITRUS AVENUE DETENTION BASIN
FILE NAME : ROT106
-------------------------------
HYDROGRAPH INFORMATION * * * * * * * * * * * * * * * * * * * * **
From study /file name: TON1 * * * * * * * * * * * * * * * * * * * * * * * * * * **
ON **** *** * * * * * * * * * * * * * * * * * * * * *HYDROGRAPH DATA
Number of intervals = 91
" Time interval = 5.0 (Min.)
Maximum /Peak flow rate = 549.3 (CFS)
Total volume = 75.45 (Ac.Ft)
rrr Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
,,. Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000 0.000
**************************************** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * **
w
+++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
process from Point /Station 1.000 to Point /Station 2.000
* * ** RETARDING BASIN ROUTING * * **
User entry of depth - outflow- storage data
r
Total number
of inflow
hydrograph
intervals =
91
Hydrograph
time unit =
5.000 (Min.)
Initial
depth in storage basin =
0.00(Ft.)
*�
------ --------------------------------------------------------------
Initial
basin depth =
0.00 (Ft.)
Initial
basin storage
= 0.00
(Ac.Ft)
Initial
basin outflow
= 0.00 (CFS).
- --
_ _ _ _
Depth vs. Storage and
_ _ --------------------
Depth vs. Discharge data: S +O dt /2)
Outflow (S- O *dt /2)
Basin Depth Storage
(Ft.) (Ac.Ft)
CFS)
( Ac _Ft)----
(Ac_Ft)
- - -( -----
--- -------------
0.000
0.000
0.000
0.000
0.000
5.660
4.000
5.000
5.421
7.672
69.487
83.513
5.182
7.384
7.960
�j
6.000
10.036
95.501
106.144
9.707
12.146
10.365
12.878
7.000
8.000
12.512
15.094
115.812
14.695
15.493
9.000
17.788
124.734
17.358
18.218
ai
10.000
20.597
133.058
20.139
23.036
21.055
24.006
00
11.000
12.000
23.521
26.565
140.892
148.312
26.054
27.076
13.000
29.739
155.378
29.204
30.274
rr
14.000
33.052
162.137
32.494
33.610
----- -------------------------------
-----------------------------------------
Hydrograph Detention Basin Routing
Graph
values:
'I'=
unit inflow;
'O'= outflow at time shown
�
Time
Inflow
(CFS)
Outflow
(CFS)
Storage
(Ac.Ft)
.0 137.3 274.7 412.0
549 . 3 (F0.)
(Hours)
0.083
0.8
0.0
0.003
0
0.0
0.167
3.0
0.2
0.015
0
0.0
4M
0.250
8.1
0.6
0.050
0
0.1
X0.333
15.8
1.6
0.125
0
0.2
JW
0.417
25.1
3.2
0.249
OI
0.3
0.500
36.6
5.5
0.431
0 I
0.5
0.583
49.0
8.7
0.677
0 I
0.7
0.667
58.1
12.5
0.973
0 I
1.0
dd
0.750
64.7
16.6
1.296
0 I
1.2
0.833
69.8
20.9
1.630
O I
1.4
0.917
73.2
25.2
1.964
0 I
1.7
Sri
1.000
76.0
29.4
2.290
0 I
1.9
1.083
78.2
33.4
2.605
O I
2.1
+�
1.167
79.8
37.2
2.906
O I
2.4
1.250
81.1
40.9
3.191
0 I
2.6
1.333
82.3
44.4
3.460
0 I
2.7
1.417
83.6
47.6
3.715
0 I
2.9
1.500
84.9
50.7
3.957
0 I
3.1
1.583
86.3
53.7
4.187
0 I
3.3
1.667
87.7
56.5
4.407
0 I
3.4
.��
1.750
88.9
59.2
4.617
0 I
3.6
1.833
90.2
61.7
4.817
0 I
3.7
0
1.917
91.6
64.2
5.010
0 I
3.8
2.000
93.0
66.6
5.195
0 I
4.0
4" !
2.083
94.6
68.9
5.374
OI
4.1
2.167
96.2
70.3
5.552
OI
4.1
2.250
98.0
71.4
5.733
OI
4.2
2.333
100.0
72.6
5.918
OI
4.3
2.417
102.1
73.8
6.110
OI
4.4
2.500
104.3
75.0
6.308
0 I
4.5
2.583
106.8
76.3
6.514
0 I
4.6
2.667
109.2
77.6
6.728
0 I
4.7
2.750
111.8
79.0
6.950
0 I
4.8
2.833
114.5
80.4
7.180
0 I
4.9
2.917
117.3
81.9
7.419
0 I
5.0
3.000
120.3
83.5
7.668
0 I
5.1
3.083
123.6
84.8
7.928
0 I
5.2
3.167
127.2
86.2
8.203
0 I
5.3
3.250
131.1
87.7
8.49
0 I
I
5.5
135.4
89.2
8.802
0
5.6
di 3.333
3.417
139.8
90.9
9.129
0 I
5.8
3.500
143.8
92.6
9.474
0 I
5.9
3.583
147.1
94.5
9.831
0 I
6.1
3.667
149.7
96.2
10.196
0 I
6.2
3.750
152.7
97.8
10.570
0 I
6.4
3.833
156.3
99.4
10.954
0 I
6.5
„
1
3.917
163.0
101.2
11.363
0 I
6.7
id
4.000
178.2
103.2
11.834
0 I
7.0
4.083
219.3
106.0
12.482
0 I I
7.4
4.167
282.7
109.7
13.468
0 I
7.9
4.250
373.4
115.3
14.953
00 I
8.7
4.333
455.9
122.1
16.991
I 9.6
4.417
505.9
129.6
19.436
0
I 10.5
4.500
549.3
137.2
22.151
00
I 11.5
di
4.583
545.0
144.4
24.950
I
12.2
4.667
442.7
150.0
27.337
0
I
12.8
am
4.750
356.8
153.8
29.044
0
4i
M
r4qcrow oww mgl:rMNrl0mr-%Dd'Mrlmr .4. N MOI`MOL grfi D MH N orL ONHmrl kodrMNHo
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MMMMMMMMMMMMMN. N . N . N. NNrir -le- lriOOOOO\O\0 . c0c0c (��[�tfllD��Ln u d' 4499MN. N NN Nririe-Iririri4
H H r-1 H H H H ri H ri H 9-1 H rl ri H r-i H H H r-i H H H r-i H r-I
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Ln LO M Ln Ln to Ln Ln Ln Ln Ln Ln Ln Ln 0 Ln to Ln d' dr d' d d' d' M M M M N N N H ri H H O O O Ol Ol Ol Ol w O O r L L w w Ln Ln d• d• M M M M N N N N ri r♦
r♦ ri H r-I H H ri H H H H ri ri ri r{ ri H H ri ri ri ri r-i H ri ri ri ri ri r-i ri H r-I H r-I r-I ri r-I
r- Ln CCI :r O Ln M O d' %D O r- O Ol ri w M N w N w w %D M lD CO r- M Ln N O I` .9r N 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O N ri ri O1 Ol ri Ln Ol M 9 O Ln 4 (1 Ln ri 4 4 4 ri O O\ M O . Ln M N r1 ri ri O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
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O m O O e-I N M d' Ln Ln lfl L- w m O O r♦ N M dr 0 to lD I` 0 0 0 0 ri N M d' M LO lD r- w Ol O O ri N M d' 0 Ln lD r- 0 01 O O H N M d' 0 0 0 r- O 0 O O
44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LnUnLnLnLnLnLnLILnLnLnLn %D1D1DIDl % 0lD% 0lD% 0l DlDl � L�L�I�I�L�I�I�I�999000;0;0;0;0; CO CO 000000 C0 C1 O1 01 01 01 01 01 01 0 8
e ri
f t -.... f f ...�. '.
i
10.167 0.0 16.1 1.260 0 0.9
10.250 0.0 14.8 1.153 0 0.9
10.333 0.0 13.5 1.056 0 0.8
10.417 0.0 12.4 0.966 0 0.7
10.500 0.0 11.3 0.885 0 0.7
10.583 0.0 10.4 0.810 0 0.6
10.667 0.0 9.5 0.741 0 0.5
10.750 0.0 8.7 0.679 0 0.5
10.833 0.0 8.0 0.621 0 0.5
10.917 0.0 7.3 0.569 0 0.4
11.000 0.0 6.7 0.521 0 0.4
11.083 0.0 6.1 0.477 0 0.4
11.167 0.0 5.6 0.436 0 0.3
11.250 0.0 5.1 0.400 0 0.3
11.333 0.0 4.7 0.366 0 0.3
11.417 0.0 4.3 0.335 0 0.2
11.500 0.0 3.9 0.307 0 0.2
11.583 0.0 3.6 0.281 0 0.2
11.667 0.0 3.3 0.257 0 0.2
11.750 0.0 3.0 0.235 0 0.2
11.833 0.0 2.8 0.215 0 0.2
11.917 0.0 2.5 0.197 0 0.1
12.000 0.0 2.3 0.180 0 0.1
12.083 0.0 2.1 0.165 0 0.1
12.167 0.0 1.9 0.151 0 0.1
12.250 0.0 1.8 0.138 0 0.1
1 12.333 0.0 1.6 0.127 0 0.1
12.417 0.0 1.5 0.116 0 0.1
12.500 0.0 1.4 0.106 0 0.1
12.583 0.0 1.2 0.097 0 0.1
12.667 0.0 1.1 0.089 0 0.1
f 12.750 0.0 1.0 0.081 0 0.1
12.833 0.0 1.0 0.075 0 0.1
12.917 0.0 0.9 0.068 0 0.1
13.000 0.0 0.8 0.063 0 0.0
13.083 0.0 0.7 0.057 0 0.0
13.167 0.0 0.7 0.052 0 0.0
13.250 0.0 0.6 0.048 0 0.0
13.333 0.0 0.6 0.044 0 0.0
13.417 0.0 0.5 0.040 0 0.0
13.500 0.0 0.5 0.037 0 0.0
13.583 0.0 0.4 0.034 0 0.0
13.667 0.0 0.4 0.031 0 0.0
13.750 0.0 0.4 0.028 0 0.0
13.833 0.0 0.3 0.026 0 0.0
13.917 0.0 0.3 0.024 0 0.0
14.000 0.0 0.3 0.022 0 0.0
14.083 0.0 0.3 0.020 0 0.0
14.167 0.0 0.2 0.018 0 0.0
14.250 0.0 0.2 0.017 0 0.0
14.333 0.0 0.2 0.015 0 0.0
14.417 0.0 0.2 0.014 0 0.0
14.500 0.0 0.2 0.013 0 0.0
******* * * * * * * * * * * * * * * * * * * * * *HYDROGRAPH DATA * * * * * * * * * * * * * * * * * * * * * * * * * * **
Number of intervals = 174
Time interval = 5.0 (Min.)
Maximum /Peak flow rate = 159.6 (CFS)
Total volume = 75.44 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000 0.000
**************************************** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * **
FLOOD HYDROGRAPH ROUTING PROGRAM
Copyright (c) Civi1CADD /Civi1DESIGN, 1990
Study date: 4/ 3/91
ROUTING UNIT HYDROGRAPH INTO BASIN
100 YEAR, 24 HOUR
CITRUS AVENUE DETENTION BASIN
FILE NAME : ROT124
* * * * * * * * * * * * * * * * * * * ** HYDROGRAPH INFORMATION * * * * * * * * * * * * * * * * * * * * **
From study /file name: TON124.rte
******* * * * * * * * * * * * * * * * * * * * * *HYDROGRAPH DATA * * * * * * * * * * * * * * * * * * * * * * * * * * **
Number of intervals = 307
Time interval = 5.0 (Min.)
Maximum /Peak flow rate = 549.3 (CFS)
Total volume = 174.40 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000 0.000
**************************************** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * **
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 1.000 to Point /Station 2.000
* * ** RETARDING BASIN ROUTING * * **
User entry of depth-outflow-storage data
Y
Total number of inflow hydrograph intervals = 307
Hydrograph time unit = 5.000 (Min.)
Initial depth in storage basin = 0.00(Ft.)
Initial basin depth = 0.00 (Ft.)
Initial basin storage = 0.00 (Ac.Ft)
Initial basin outflow = 0.00 (CFS)
Depth vs. Storage and Depth vs. Discharge data:
Basin Depth Storage Outflow (S- O *dt /2) (S +O *dt /2)
(Ft.) (Ac.Ft) (CFS) (Ac.Ft) (Ac.Ft)
0.000 0.000 0.000 0.000 0.000
4.000 5.421 69.487 5.182 5.660
5.000 7.672 83.513 7.384 7.960
6.000 10.036 95.501 9.707 10.365
7.000 12.512 106.144 12.146 12.878
8.000 15.094 115.812 14.695 • 15.493
9.000 17.788 124.734 17.358 18.218
10.000 20.597 133.058 20.139 21.055
11.000 23.521 140.892 23.036 24.006
12.000 26.565 148.312 26.054 27.076
13.000 29.739 155.378 29.204 30.274
14.000 33.052 162.137 32.494 33.610
,y
------------------------------------------------
Hydrograph Detention
Basin Routing
Graph values
'I
unit inflow;
'O'= outflow at
time shown
--------
Time
---------------------------------------------------------
Inflow
Outflow
(CFS)
Storage
(Ac.Ft)
.0 137.3 274.7
412.0
Depth
549.3 (Ft
Hours)
(CFS)
0.
0.083
0.6
0.0
0.002
0
0.0
0.167
2.2
0.1
0.011
0
0.0
0.250
5.8
0.5
0.036
0
0.1
0.333
11.3
1.1
0.089
0
0.1
0.417
17.9
2.3
0.178
OI
0.2
0.500
26.0
3.9
0.307
OI
0.4
0.583
34.7
6.2
0.481
0 I
0.5
0.667
40.9
8.8
0.690
0 I
0.7
0.750
45.3
11.7
0.916
0 I
0.8
0.833
48.5
14.7
1.147
0 I
1.0
0.917
50.5
17.6
1.377
OI
1.2
1.000
52.0
20.5
1.599
0 I
1.3
1.083
53.0
23.2
1.810
0 I
1.5
1.167
53.7
25.8
2.009
0 I
1.6
1.250
54.0
28.1
2.194
0 I
1.7
1.333
54.3
30.3
2.366
0 I
1.9
1.417
54.6
32.4
2.525
0 I
2.0
07 1.500
54.8
34.3
2.672
0 I
2.1
1.583
55.1
36.0
2.809
OI
2.2
1.667
55.4
37.6
2.936
OI
2.3
1.750
55.5
39.1
3.053
OI
2.3
1.833
55.6
40.5
3.162
OI
2.4
bi
1.917
55.7
41.8
3.261
OI
2.5
2.000
55.8
43.0
3.354
OI
2.5
'*
2.083
56.0
44.1
3.439
OI
2.6
2.167
56.1
45.1
3.518
OI
2.6
2.250
56.2
46.0
3.591
OI
2.7
2.333
56.3
46.9
3.658
OI
2.7
2.417
56.5
47.7
3.721
OI
2.8
di
2.500
56.6
48.4
3.779
OI
2.8
2.583
56.7
49.1
3.833
OI
2.9
2.667
56.8
49.8
3.883
OI
2.9
2.750
57.0
50.4
3.930
OI
2.9
2.833
57.1
50.9
3.974
OI
3.0
2.917
57.2
51.5
4.015
OI
3.0
3.000
57.3
52.0
4.053
0
3.0
3.083
57.5
52.4
4.089
0
3.0
3.167
57.6
52.9
4.123
0
3.1
3.250
57.7
53.3
4.155
0
3.1
3.333
57.9
53.6
4.185
0
3.1
3.417
58.0
54.0
4.213
0
3.1
3.500
58.1
54.4
4.240
0
3.1
q "
3.583
58.3
54.7
4.266
0
3.2
3.667
58.4
55.0
4.290
0
3.2
3.750
58.6
55.3
4.313
0
3.2
3.833
58.7
55.6
4.335
0
3.2
3.917
58.9
55.8
4.356
0
3.2
4.000
59.0
56.1
4.377
0
3.2
4.083
59.1
56.4
4.396
0
3.3
'R1
4.167
59.3
56.6
4.415
0
3.3
4.250
59.4
56.8
4.433
0
3.3
4.333
59.6
57.1
4.451
0
3.3
4.417
59.7
57.3
4.468
0
3.3
4.500
59.9
57.5
4.485
0
3.3
4.583
60.0
57.7
4.501
0
3.3
4.667
60.2
57.9
4.517
0
3.3
+.�
4.750
60.4
58.1
4.533
0
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d' d'Ln Ln Ln Ln Ln Ln Ln Ln Ln Ln Ln Ln t0 t4 l0 t0 to td t0 t0 t0 t0 t0 kp 9 h � 9 9 � 9 9 9 L` 9 9 Co Co 00 00 00 00 00 C0 00 00 00 00 O1 01 01 01 01 01 O1 01 01 01 O1 01 O O
H r-i
40.167
75.8
71.1
5.681
0
4.1
10.250
76.2
71.3
5.714
0
4.1
4.1
0.333
76.6
71.5
5.748
0
4.2
40.417
76.9
71.7
5.783
0
4.2
10.500
77.3
72.0
5.819
0
4.2
0.583
77.7
72.2
5.857
0
4.2
0.667
78.1
72.4
5.896
0
4.2
0.750
78.6
72.7
5.935
0
4.2
10.833
79.0
72.9
5.976
0
4.3
79.4
73.2
6.018
0
4.3
1.000
Z
79.8
73.5
6.062
0
4.3
1 0.917
.083
80.3
73.8
6.106
0
4.3
11.167
80.8
74.0
6.152
0
4.3
ML 1.250
81.2
74.3
6.199
0
4.4
11.333
81.7
74.6
6.247
0
4.4
11.417
82.2
74.9
6.296
0
4.4
1.500
82.7
75.3
6.347
0
4.4
1.583
83.2
75.6
6.399
0
4.5
1.667
83.7
75.9
6.452
0
4.5
11.750
84.3
76.3
6.506
0
4.5
1.833
84.8
76.6
6.562
0
4.5
1.917
85.4
77.0
6.620
0
4.6
12.000
86.0
77.3
6.679
OI
4.6
12.083
86.4
77.7
6.738
OI
4.6
1 2.167
86.6
78.1
6.797
OI
4.6
12.250
86.2
78.4
6.853
OI
4.7
12.333
85.3
78.7
6.903
0
4.7
am12.417
84.1
79.0
6.943
0
4.7
12.500
82.5-
79.2
6.972
0
4.7
12.583
80.8
79.3
6.989
0
4.7
12.667
79.8
79.3
6.996
0
4.7
: 12.750
79.4
79.3
6.998
0
4.7
12.833
79.3
79.3
6.998
0
4.7
12.917
79.6
79.3
6.999
0
4.7
"13.000
80.1
79.3
7.002
0
4.7
13.083
80.7
79.4
7.009
0
4.7
13.167
81.5
79.5
7.021
0
4.7
13.250
82.4
79.6
7.038
0
4.7
13.333
83.4
79.7
7.061
0
4.7
13.417
84.4
79.9
7.089
0
4.8
13.500
85.4
80.1
7.123
0
4.8
13.583
86.5
80.3
7.163
OI
4.8
1 13.667
87.7
80.6
7.208
OI
4.8
13.750
88.9
80.9
7.260
OI
4.8
13.833
90.2
81.3
7.319
OI
4.9
13.917
91.6
81.7
7.383
OI
4.9
14.000
93.0
82.2
7.455
OI
4 . 9
14.083
94.6
82.6
7.533
OI
5.0
14.167
96.2
83.2
7.619
OI
5.0
: 14.250
98.0
83.7
7.713
OI
5.1
14.333
100.0
84.2
7.816
OI
5.1
14.417
102.1
84.8
7.930
OI
5.2
14.500
1 14.583
104.3
106.8
85.5
86.1
8.054
8.190
0 I
OI
5.2
5.3
14.667
109.2
86.9
8.338
OI
5.3
14.750
111.8
87.7
8.498
OI
5.4
14.833
114.5
88.6
8.670
OI
5.5
14.917
117.3
89.5
8.855
OI
5.6
15.000
120.3
90.5
9.054
0 I
5.7
15.083
123.6
91.6
9.267
0 I
5.8
15.167
127.2
92.8
9.496
0 I
5.9
15.250
131.1
94.0
9.742
0 I
6.0
15.333
135.4
95.4
10.007
0 I
6.1
'� 15.417
139.8
96.6
10.294
0 I
O I
0 I
0 I
0 I
0 I
0 I
0 I
0 I
0
0
O
0
0
0
0
0
0
0 I
OI
0
IO
I 0
I 0
I 0
I 0
I 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
0
0
0
0
0
0
0
0
0
0
0
0
0
I
x5.500
143.8
97.9
10.601
15.583
147.1
99.3
10.923
5.667
149.7
100.7
11.256
5.750
152.7
102.2
11.598
5.833
156.3
103.7
11.953
15.917
163.0
105.4
12.332
6.000
178.2
107.1
12.776
J6.083
219.3
109.5
13.399
16.167
282.7
113.1
14.361
6.250
373.4
118.2
15.824
6.333
455.9
124.9
17.843
+0416.417
505.9
132.1
20.270
16.500
549.3
139.4
22.968
=46.583
545.0
146.3
25.753
6.667
442.7
151.8
28.127
4 6.750
356.8
155.5
29.822
16.833
298.7
158.0
31.000
""16.917
242.5
159.5
31.770
wr17.000
211.8
160.5
32.233
17.083
181.4
161.0
32.480
"17.167
159.0
161.1
32.543
L7.250
139.5
160.9
32.462
7.333
131.3
160.6
32.287
17.417
125.0
160.1
32.066
119.4
159.6
31.806
1 7.500
7.583
113.6
159.0
31.512
17.667
107.0
158.3
31.179
17.750
98.7
157.5
30.799
17.833
95.0
156.7
30.384
+ii17.917
91.9
155.8
29.952
18.000
89.1
154.9
29.505
ggl8.083
86.7
153.8
29.048
J18.167
84.9
152.8
28.583
18.250
83.8
151.8
28.115
18.333
83.4
150.7
27.648
'18.417
83.4
149.7
27.188
18.500
84.0
148.7
26.737
18.583
84.9
147.7
26.298
18.667
85.2
85.1
146.6
145.6
25.871
25.451
J 18.750
18.833
84.7
144.6
25.037
18.917
84.1
143.6
24.626
..19.000
83.4
142.6
24.218
"19.083
82.6
141.6
23.810
19.167
81.7
140.6
23.404
80.8
139.5
23.000
] 19,250
19.333
79.9
138.4
22.596
22.194
19:417
79.1
137.3
19.500
78.3
136.3
21.794
19.583
77.5
135.2
21.395
19.667
76.8
134.1
20.999
19.750
76.0
133.1
20.605
19.833
75.3
131.9
20.213
74.6
130.8
19.825
1 19.917
20.000
73.9
129.6
19.439
20.083
73.2
128.5
19.057
20.167
72.6
127.4
18.678
: 20.250
72.0
126.3
18.302
20.333
71.4
125.2
17.930
20.417
70.8
124.0
17.562
70.2
122.8
17.197
1 20.500
20.583
69.7
121.6
16.838
20.667
69.1
120.4
16.482
68.6
119.2
16.132
,
O I
0 I
0 I
0 I
0 I
0 I
0 I
0 I
0
0
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0
0
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0
0 I
OI
0
IO
I 0
I 0
I 0
I 0
I 0
0
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0
0
0
0
0
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0
0
0
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0
0
0
0
0
0
0
0
0
0
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0
I
I
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I
I
6.2
6.4
6.5
6.6
6.8
6.9
7.1
7.3
7.7
8.3
9.0
9.9'
10.8
11.7
12.5
13.0
13.4
13.6
13.8
13.8
13.8
13.8
13.8
13.7
13.6
13.5
13.4
13.3
13.2
13.1
12.9
12.8
12.6
12.5
12.3
12.2
12.1
11.9
11.8
11.6
11.5
11.4
11.2
11.1
11.0
10.8
10.7
10.5
10.4
10.3
10.1
10.0
9.9
9.7
9.6
9.5
9.3
9.2
9.1
8.9
8.8
8.6
8.5
8.4
q q
8.3
,0.833
68.1
118.1
15.785
I 0
8.1
20.917
67.6
117.0
15.443
I 0
8.0
1.000
67.2
115.9
15.106
I 0
7.9
1.083
66.7
114.6
14.773
I 0
7.7
1.167
66.2
113.4
14.446
I 0
7.6
21.250
65.8
112.2
14.124
I 0
7.5
"R1.333
65.4
111.0
13.807
I 0
7.4
1.417
65.0
109.8
13.495
I 0
7.3
1.500
64.5
108.7
13.189
I 0
7.1
1.583
64.1
107.5
12.887
I 0
7.0
1.667
63.8
106.4
12.591
I 0
6.9
*91.750
63.4
105.2
12.300
I 0
6.8
21.833
63.0
104.0
12.014
I 0
6.7
oQ1.917
62.6
102.8
11.735
I 0
6.6
62.3
101.6
11.461
I 0
6.5
4 2.000
2.083
61.9
100.5
11.193
I 0
6.4
22.167
61.6
99.3
10.930
I 0
6.3
.250
61.2
98.2
10.672
I 0
6.2
' O WR2
2.333
60.9
97.2
10.420
I 0
6.1
22.417
60.6
96.1
10.173
I 0
6.0
,"2.500
60.3
95.0
9.931
I 0
5.9
2.583
59.9
93.8
9.695
I 0
5.8
2.667
59.6
92.6
9.465
I 0
5.7
22.750
59.3
91.5
9.241
I 0
5.6
eQ2.833
59.0
90.4
9.
I 0
5.5
58.8
89.3
8.810
I 0
5.4
4 2.917
3.000
58.5
88.2
8.602
I 0
5.3
23.083
58.2
87.2
8.400
I 0
5.2
'3.167
57.9
86.2
8.203
I 0
5.1
w93.250
57.7
85.2
8.010
IO
5.1
23.333
57.4
84.3
7.823
IO
5.0
„3.417
57.1
83.3
7.640
IO
4.9
3.500
56.9
82.2
7.462
IO
4.8
4 23.583
56.6
81.1
7.291
IO
4.8
23.667
56.4
80.1
7.125
IO
4.7
OR23.750
56.1
79.1
6.964
IO
4.6
if,3.833
55.9
78.1
6.808
IO
4.5
23.917
55.7
77.2
6.657
IO
4.5
55.4
76.3
6.511
IO
4.4
1 4.000
4.083
54.6
75.4
6.368
IO
4.4
4.167
52.8
74.5
6.222
IO
4.3
24.250
49.0
73.5
6.063
I 0
4.2
43.3
72.3
5.879
I 0
4.1
1 4.333
4.417
36.6
71.0
5.660
I 0
4.0
24.500
28.4
69.2
5.401
I 0
3.8
24.583
19.6
65.4
5.103
I 0
3.5
13.4
61.3
4.780
I 0
3.3
] 24.667
4.750
9.1
57.0
4.450
I 0
3.0
24.833
5.9
52.8
4.123
I 0
2.8
4.917
3.9
48.8
3.807
I 0
2.6
1 2 25.000
2.5
44.9
3.506
I 0
2.4
25.083
1.6
41.3
3.223
I 0
2.2
25.167
1.0
37.9
2.959
I 0
2.0
5.250
0.8
34.8
2.715
I 0
1.8
5.333
0.7
31.9
2.491
IO
1.7
25.417
0.5
29.3
2.284
IO
1.5
0.3
26.8
2.093
IO
1.4
Y 5.500
25.583
0.1
24.6
1.918
IO
1.3
25.667
0.0
22.5
1.756
IO
1.2
25.750
0.0
20.6
1.608
IO
1.1
0.0
18.9
1.472
IO
1.0
1 25.833
25.917
0.0
17.3
1.347
IO
0.9
26.000
0.0
15.8
1.233
0
0.8
26.083
0.0
14.5
1.129
0
d96.167
0.0
13.2
1.034
O
0.8
26.250
0.0
12.1
0.946
0
0.7
0.0
11.1
0.866
0
0.6
1 6.333
6.417
0.0
10.2
0.793
0
0.5
6.500
0.0
9.3
0.726
0
0.5
26.583
0.0
8.5
0.665
O
0.5
0.0
7.8
0.608
0
0.4
3 6.667
6.750
0.0
7.1
0.557
0
0.4
26.833
0.0
6.5
0.510
0
0.4
,,, 6.917
0.0
6.0
0.467
0
0.3
7.000
0.0
5.5
0.427
O
0.3
7.083
0.0
5.0
0.391
O
0.3
27.167
0.0
4.6
0.358
0
0.3
7.250
0.0
4.2
0.328
O
0.2
7.333
4
0.0
3.8
0.300
O
0.2
7.417
0.0
3.5
0.275
0
0.2
27.500
0.0
3.2
0.252
O
0.2
0.2
0.0
3.0
0.230
0
2 7.583
7.667
0.0
2.7
0.211
0
0.2
27.750
0.0
2.5
0.193
O
0.1
X7.833
0.0
2.3
0.177
O
0.1
0.1
0.0
2.1
0.162
O
4 7.917
8.000
0.0
1.9
0.148
0
0.1
0.1
28.083
0.0
1.7
0.136
0
0.1
8.167
0.0
1.6
0.124
O
0.1
3 8.250
0.0
1.5
0.114
0
0.1
28.333
0.0
1.3
0.104
0
0.1
8.417
0.0
1.2
0.095
0
0.1
1 8.500
0.0
1.1
0.087
0
0.1
8.583
0.0
1.0
0.080
0
0.1
28.667
0.0
0.9
0.073
0
0.0
"C8.750
0.0
0.9
0.067
0
8.833
0.0
0.8
0.061
0
0.0
8.917
0.0
0.7
0.056
0
0.0
29.000
0.0
0.7
0.051
0
0.0
0.0
2 9.083
0.0
0.6
0.047
0
0.0
9.167
0.0
0.6
0.043
O
0.0
29.250
0.0
0.5
0.039
0
0.0
9.333
0.0
0.5
0.036
0
0.0
9.417
0.0
0.4
0.033
0
0.0
9.500
0.0
0.4
0.030
0
0.0
29.583
0.0
0.4
0.028
0
0.0
9.667
0.0
0.3
0.025
O
0.0
9.750
0.0
0.3
0.023
0
0.0
29.833
0.0
0.3
0.021
O
0.0
29.917
1 30.000
0.0
0.0
0.2
0.2
0.019
0.018
0
0
0.0
0.0
30.083
0.0
0.2
0.016
O
0.0
30.167
0.0
0.2
0.015
O
0.0
0.0
0.2
0.014
O
0.0
: 30.250
30.333
0.0
0.2
0.012
0
******* * * * * * * * *
* * * * * * * * * * *
* *HYDROGRAPH DATA * * * * * * * * * * * * * * * * * * *
* * * * * * * **
Number of
intervals = 364
Time interval
= 5.0 (Min.)
Maximum /Peak
flow rate = 161.1 (CFS)
Total volume
= 174.38 (Ac.Ft)
MR
Status
of hydrographs
being held in storage
Stream
1 Stream 2 Stream 3 Stream 4 Stream
5
Peak (CFS) 0.000
0.000 0.000 0.000
0.000
�!
Vol (Ac.Ft) 0.000
0.000 0.000 0.000
0.000
****************************************
* * * * * * * * * * * * * * * * * * * * * *
* * * * * * * **
------------------------------------------------------
�9�
UNIT HYDROGRAPH AND BASIN ROUTING ANALYSIS
WITHOUT OVERFLOW FROM BASELINE
Q 100 YEAR, 3 HOUR, 6 HOUR & 24 HOUR
/95
40 Job No. 6 /oO Date
.. Sierra Engineering •.7.?os /9VE- 5To/fYr .4,eA/ti
CIVIL ENGINEERS • LAND SURVEYORS • LAND PLANNERS ^ �J
DIVISION OF PROJFCT 2000, INC I�E7 'T /O-V �✓ /95 Y.v
By 774 Sheet of
ale
Ili I • 1 • i II
G h i / Us iy /C = ,73. oe/z = 0 3 214 f�vie (‚:9) '
., 1 1 ,
1 1
III/ 1 I
1 1 , : , :
: : 1 :
• .
MO 1 1 : 1dv
41 ! �T ! oG i9/�i`/ /f e;4K (o'7 /o .(t f'TH 7 )
1
/ / 3 /io17/P /4 � S >f s - . • i J L. i I
/ao• t -6.9, l ‘ //e9434 • /4 ,
y1 ,,9 Gfs . . � O I ' • .111111
.r I 1! /; 1 i l
i
i- ' . , ' •
•
I
• I , 1 1 . ,
1 I
I I . 1 1 '
I
I j
1 1
I r it
I, 1 � ,
!
a
1
i
/ I
we
ar
U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CivilCadd /CivilDesign, 1990, Version 2.2
ar
Study date 4/ 3/91
+++++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
San Bernardino County Synthetic Unit Hydrology Method
Manual date - August 1986
UNIT HYDROGRAPH FOR CITRUS AVE STORM DRAIN
to POINT OF CONCENTRATION @ CITRUS & ARROW
Q 100 YEAR 3 HOUR
FILE NAME : TON23
all
Storm Event Year = 100
Antecedent Moisture Condition = 3
Area averaged rainfall intensity isohyetal data:
Sub -Area Duration Intensity
(acres) (hours) (inches)
Rainfall data for year 100
262.40 1 1.52
w
Rainfall data for year 100
262.40 6 3.87
Rainfall data for year 100
262.40 24 9.25
+++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
* * * * * * ** Area - averaged max loss rate, Fm * * * * * * **
SCS curve SCS curve Area Area Fp(Fig c6) Ap Fm
No.(AMCII) No.(AMC 3) (Acres) Fraction (In /Hr) (dec.) (in /hr)
32.0 52.0 262.40 1.000 0.785 0.390 0.306
Area- averaged adjusted loss rate Fm (In /Hr)= 0.306
+r * * * * * * * ** Area - Averaged low loss rate fraction, Yb * * * * * * * * **
Area Area SCS cn SCS cn S Pervious
(acres) fract (AMC2) (AMC3) yield fr
102.34 0.390 32.0 52.0 9.23 0.356
160.06 0.610 98.0 98.0 0.20 0.960
Area - averaged catchment yield fraction, Y = 0.725
Area - averaged low loss fraction, Yb = 0.275
.,. +++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
User entry of time of concentration = 0.384 (hours)
Watershed area = 262.40 acres
Catchment Lag time = 0.307 hours
Unit interval = 5.000 minutes
Unit interval percentage of lag time = 27.1267
Hydrograph baseflow = 0.00 (CFS)
Average maximum watershed loss rate(Fm) = 0.306 (In /hr)
qR
46
Average low loss
rate fraction (Yb) = 0.275 (decimal)
Valley Developed
S -Graph Selected
40
Computed peak
5- minute rainfall = 0.563 inches
Computed peak
30- minute rainfall = 1.152 inches
do
Specified peak
1 -hour rainfall = 1.520 inches
Computed peak
3 -hour rainfall = 2.696 inches
Specified peak
6 -hour rainfall = 3.870 inches
Specified peak
24 -hour rainfall = 9.250 inches
Rainfall depth
area reduction factors:
+rd
Using a total
area of 262.40 acres (Ref: fig. E -4)
.�,
5- minute factor
= 0.988 Adjusted rainfall = 0.556
inches
30- minute factor
= 0.988 Adjusted rainfall = 1.138
inches
1 -hour factor
= 0.988 Adjusted rainfall = 1.501
inches
3 -hour factor
= 0.998 Adjusted rainfall = 2.692
inches
6 -hour factor
= 0.999 Adjusted rainfall = 3.867
inches
24 -hour factor
---------------------------------------------------------------------
= 1.000 Adjusted rainfall = 9.247
inches
U n i t H y d r o g r a p h
++++++++++++++++++++++++++++++++++++++
+ + + + + + + + + + + + + + + + +
+ + + + + + + + + + + + ++
Interval
'S' Graph Unit Hydrograph
*�
Number
Mean values (CFS)
OW
---------------------------------------------------------------------
1
1.710 54.251
2
9.008 231.608
A.
3
24.312 485.672
4
45.021 657.151
5
68.189 735.214
•.
6
82.115 441.937
7
90.532 267.116
'
8
95.111 145.316
9
97.534 76.884
4"
10
98.439 28.705
go
11
98.927 15.497
12
99.415 15.492
AN
13
100.000 18.559
---------------------------------------------------------------------
Peak Unit Adjusted
mass rainfall Unit rainfall
Number
(inches) (inches)
1
0.56 0.56
2
0.73 0.18
3
0.86 0.13
4
0.97 0.11
5
1.06 0.09
4W
6
1.14 0.08
7
1.21 0.07
«w
8
1.28 0.07
9
1.34 0.06
di
10
1.40 0.06
11
1.45 0.05
12
1.50 0.05
13
1.57 0.07
14
1.63 0.06
40
15
1.69 0.06
16
1.75 0.06
17
1.81 0.06
18
1.86 0.06
19
1.92 0.05
20
1.97 0.05
21
2.02 0.05
22
2.07 0.05
r
�9�
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - j ---------------------
qM
A Total soil rain loss = 0.58 (In.)
Total effective runoff = 2.11 (In.)
--------------------------------------------------------------------
Total soil -loss volume = 12.6106 (Acre -Feet)
Total storm runoff volume = 46.2235 (Acre -Feet)
dd
+++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
'� /917
23
2.12
0.05
24
2.17
0.05
„*
25
2.22
0.05
26
2.26
0.05
27
2.31
0.05
28
2.36
0.05
"
29
2.40
0.04
30
2.44
0.04
31
2.49
0.04
32
2.53
0.04
33
2.57
0.04
r
34
2.61
0.04
35
2.65
0.04
36
2.69
0.04
---------------------------------------------------------------------
Unit
Unit
Unit
Effective
Period
Rainfall
Soil -Loss
Rainfall
(number)
(inches)
(inches)
(inches)
,r
---------------------------------------------------------------------
1
0.0400
0.0110
0.0290
2
0.0405
0.0112
0.0294
3
0.0417
0.0115
0.0302
4
0.0423
0.0116
0.0307
5
0.0436
0.0120
0.0316
**
6
0.0443
0.0122
0.0321
7
0.0459
0.0126
0.0332
8
0.0467
0.0129
0.0338
9
0.0485
0.0134
0.0352
10
0.0495
0.0136
0.0359
.r
11
0.0517
0.0142
0.0375
12
0.0530
0.0146
0.0384
,..
13
0.0557
0.0153
0.0404
14
0.0573
0.0158
0.0415
15
0.0609
0.0168
0.0441
16
0.0629
0.0173
0.0456
®
17
0.0514
0.0141
0.0372
18
0.0542
0.0149
0.0393
19
0.0616
0.0170
0.0446
20
0.0664
0.0183
0.0481
21
0.0800
0.0220
0.0580
22
0.0903
0.0249
0.0655
23
0.1291
0.0255
0.1036
24
0.1775
0.0255
0.1520
25
0.5556
0.0255
0.5301
26
0.1052
0.0255
0.0796
27
0.0724
0.0199
0.0524
.,
28
0.0576
0.0159
0.0417
29
0.0652
0.0180
0.0473
30
0.0590
0.0162
0.0427
,.�
31
0.0543
0.0149
0.0393
32
0.0506
0.0139
0.0367
33
0.0476
0.0131
0.0345
34
0.0451
0.0124
0.0327
35
0.0429
0.0118
0.0311
36
--------------------------------------------------------------
0.0411
0.0113
0.0298
- - - - --
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - j ---------------------
qM
A Total soil rain loss = 0.58 (In.)
Total effective runoff = 2.11 (In.)
--------------------------------------------------------------------
Total soil -loss volume = 12.6106 (Acre -Feet)
Total storm runoff volume = 46.2235 (Acre -Feet)
dd
+++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
'� /917
I"
„i 3 - H O U R S T 0 R M
R u n o f f H y d r o g r a p h
qq --------------------------------------------------------------------
Hydrograph in 5 Minute intervals (CFS)
di
--------------------------------------------------------------------
qqTime(h +m) Volume(AF)
Q(CFS)
0
150.0 300.0
450.0
600.0
i
---------------------------------------------------------------------
Q
0+ 5
0.0108
1.57
0 +10
0.0680
8.31
Q
0 +15
0.2231
22.52
VQ
di
0 +20
0.5122
41.98
V Q
0 +25
0.9537
64.10
V
Q
0 +30
1.4924
78.22
V
Q
0 +35
2.0963
87.68
V
Q
0 +40
2.7427
93.86
V
Q
0 +45
3.4202
98.36
V
Q
0 +50
4.1202
101.64
V Q
0 +55
4.8421
104.83
V Q
1+ 0
5.5872
108.19
V Q
1+ 5
6.3586
112.01
V Q
1 +10
7.1545
115.55
VQ
1 +15
7.9781
119.59
VQ
1 +20
8.8320
123.98
VQ
*�
1 +25
9.7165
128.43
Q
1 +30
10.6211
131.35
QV
1 +35
11.5323
132.30
QV
1 +40
12.4429
132.23
Q V
1 +45
13.3597
133.12
Q V
irr
1 +50
14.3226
139.81
QI V
1 +55
15.3820
153.82
Q V
„
2+ 0'
16.6210
179.90
Q V
1
2+ 5
18.3088
245.07
VQ
do
2 +10
20.8456
368.34
V
Q
2 +15
24.3778
512.88
V
Q
2 +20
28.4545
591.93
V
Q
2 +25
32.5315
591.99
V
I Q
2 +30
35.4610
425.36
Q
V
2 +35
37.6111
312.19
Q
V
2 +40
39.2129
232.57
Q
V
dW
2 +45
40.4881
185.17
1 Q
V
2 +50
41.5283
151.03
Q
V
�i
2 +55
42.4609
135.42
Q
V
3+ 0
43.3354
126.97
Q
V
3+ 5
44.1514
118.48
Q
V
3 +10
44.8213
97.27
Q
V
3 +15
45.3588
78.04
Q
V
3 +20
45.7411
55.51
Q
V
3 +25
45.9620
32.08
Q
V
+�
3 +30
46.0856
17.95
IQ
V
3 +35
46.1510
9.49
Q
V
3 +40
46.1848
4.90
Q
V
3 +45
46.2019
2.48
Q
V
3 +50
46.2125
1.55
Q
V
3 +55
46.2197
1.04
Q
V
4+ 0
46.2235
0.55
Q
V
--------------------------------------
0
.i
- 1
//u
U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CivilCadd /CivilDesign, 1990, Version 2.2
Study date 4/ 3/91
+++++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
------------------------------------------------------------------ - - - - --
s
San Bernardino County Synthetic Unit Hydrology Method
Manual date - August 1986
---------------------------------------------------------------------
UNIT HYDROGRAPH FOR CITRUS AVE STORM DRAIN
POINT OF CONCENTRATION @ CITRUS & ARROW
Q 100 YEAR 6 HOUR
FILE NAME : TON26
--------------------------------------------------------------------
Storm Event Year = 100
.r Antecedent Moisture Condition = 3
.w
Area averaged rainfall
intensity
isohyetal data:
i
Sub -Area
Duration
Intensity
1W
(acres)
(hours)
(inches)
Rainfall data for year
100
"m
262.40
1
1.52
rr,
--------------------------------------------------------------------
Rainfall data for year
100
,.,
262.40
6
3.87
'�
--------------------------------------------------------------------
Rainfall data for year
100
262.40
24
9.25
--------------------------------------------------------------------
+++++++++++++++++++++++++++++++++++++
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
* * * * * * ** Area - averaged
max loss
rate, Fm * * * * * * **
�i
SCS curve SCS curve
Area
Area Fp(Fig c6)
Ap Fm
!w
No.(AMCII) No.(AMC 3)
(Acres)
Fraction (In /Hr)
(dec.) (in /hr)
32.0 52.0
262.40
1.000 0.785
0.390 0.306
Area - averaged adjusted
loss rate
Fm (In /Hr)= 0.306
* * * * * * * ** Area - Averaged low loss
rate fraction, Yb * * * * * * * * **
.,�
Area Area
SCS cn
SCS cn S
Pervious
(acres) fract
(AMC2)
(AMC3)
yield fr
102.34 0.390
32.0
52.0 9.23
0.356
160.06 0.610
98.0
98.0 0.20
0.960
Area - averaged catchment yield fraction, Y = 0.725
Area - averaged low loss fraction, Yb = 0.275
+++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
User entry of time of concentration = 0.384 (hours)
Watershed area = 262.40 acres
Catchment Lag time = 0.307 hours
*" Unit interval = 5.000 minutes
Unit interval percentage of lag time = 27.1267
Hydrograph baseflow = 0.00 (CFS)
Average maximum watershed loss rate(Fm) = 0.306 (In /hr)
AW /�v
Average low loss rate fraction (Yb) = 0.275 (decimal)
Valley Developed S -Graph Selected
Computed peak 5- minute rainfall = 0.563 inches
. Computed peak 30- minute rainfall = 1.152 inches
I Specified peak 1 -hour rainfall = 1.520 inches
; Computed peak 3 -hour rainfall = 2.696 inches
Specified peak 6 -hour rainfall = 3.870 inches
Specified peak 24 -hour rainfall = 9.250 inches
i i
Rainfall depth area reduction factors:
Using a total area of 262.40 acres (Ref: fig. E -4)
5- minute factor = 0.988 Adjusted rainfall = 0.556 inches
30- minute factor = 0.988 Adjusted rainfall = 1.138 inches
1 -hour factor = 0.988 Adjusted rainfall = 1.501 inches
3 -hour factor = 0.998 Adjusted rainfall = 2.692 inches
6 -hour factor = 0.999 Adjusted rainfall = 3.867 inches
24 -hour factor = 1.000 Adjusted rainfall = 9.247 inches
U n i t H y d r o g r a p h
+++++++++++++++++±++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Interval 'S' Graph Unit Hydrograph
Number Mean values (CFS)
1 1.710 54.251
2 9.008 231.608
3 24.312 485.672
4 45.021 657.151
5 68.189 735.214
6 82.115 441.937
7 90.532 267.116
8 95.111 145.316
9 97.534 76.884
10 98.439 28.705
11 98.927 15.497
12 99.415 15.492
13 100.000 18.559
Peak Unit Adjusted mass rainfall Unit rainfall
Number (inches) (inches)
1 0.56 0.56
2 0.73 0.18
3 0.86 0.13
4 0.97 0.11
5 1.06 0.09
6 1.14 0.08
7 1.21 0.07
8 1.28 0.07
9 1.34 0.06
10 1.40 0.06
11 1.45 0.05
12 1.50 0.05
13 1.57 0.07
14 1.63 0.06
15 1.69 0.06
16 1.75 0.06
17 1.81 0.06
18 1.86 0.06
19 1.92 0.05
20 1.97 0.05
21 2.02 0.05
22 2.07 0.05
23
2.12
0.05
24
2.17
0.05
25
2.22
0.05
26
2.26
0.05
�i
27
2.31
0.05
28
2.36
0.05
29
2.40
0.04
30
2.44
0.04
31
2.49
0.04
32
2.53
0.04
33
2.57
0.04
34
2.61
0.04
35
2.65
0.04
.�
36
2.69
0.04
37
2.73
0.04
dd
38
2.77
0.04
39
2.81
0.04
40
2.84
0.04
dw
41
2.88
0.04
42
2.92
0.04
43
2.95
0..04
44
2.99
0.04
dw
45
3.02
0.04
46
3.06
0.03
+�
47
3.09
0.03
48
3.13
0.03
49
3.16
0.03
50
3.20
0.03
51
3.23
0.03
Sri
52
3.26
0.03
53
3.29
0.03
..�
54
3.33
0.03
55
3.36
0.03
56
3.39
0.03
57
3.42
0.03
*�
58
3.45
0.03
59
3.48
0.03
60
3.52
0.03
61
3.55
0.03
62
3.58
0.03
+o
63
3.61
0.03
64
3.64
0.03
*�
65
3.67
0.03
66
3.69
0.03
67
3.72
0.03
68
3.75
0.03
69
3.78
0.03
r�
70
3.81
0.03
71
3.84
0.03
72
3.87
0.03
- - -- -- - - - - --
-----------
Unit
- -- ------ -
Unit
- - - -- -------- -
Unit
-
Effective
Period
Rainfall
Soil -Loss
Rainfall
(number)
(inches)
(inches)
(inches)
---------
------------------------------------------------------------
1
0.0282
0.0078
0.0204
2
0.0284
0.0078
0.0205
3
0.0287
0.0079
0.0208
4
0.0289
0.0080
0.0210
5
0.0294
0.0081
0.0213
6
0.0296
0.0081
0.0214
7
0.0300
0.0083
0.0218
8
0.0303
0.0083
0.0219
9
0.0307
0.0085
0.0223
�"
4W
m 0 O dr I- ri M O r-I 10 O1 In O d' O O d' N r� 10 ri N O N 0 if 1 d' d' In H lC N M %D rl O 0 10 O H \0 d' I� M l- M r� In r� e-I CO rl r-1 N M tG M N kO H 10 ri I-
NNMMMd d'd'111 M wr,r,OMOO wo o-O cr 01d' OOO tn MNOO1NriI�NOl 1Od'N -4
NNNNNNNNNNNNNNNNNMMMMMMMMMM cr crc -crmmd' tn d'd' ct'MC'7MMMNNNNNNNNNNNNN
O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O H H M O O O O O O O O O O O O O O O O O O O O O O O
00000000000000000000000000000000000000000000
111 I- I- OIONNd' In c-wHNd' In 0N1f1100Nt00lgrtDN�o m W m r - I m 0 m 0 M M M M M MM0NM0) -id MMhM01l0Mr•1 COkOd NO M
OOCOOOCOOl0101010 mm 0000r4 rirAH NN NNMMd"d lnUlln0 0)LnCOOd'MMNr- iH000)MCn0) 0000 COMMr-
0 O O O O O O O O O O ri H H ri ri ri ri r-i ri ri ri H ri H ri ri ri r-i r-4 H ri H r-I H N N N N N N H ri ri ri r-1 r-1 r-i ri ri r i H ri 0 0 0 0 0 0 0 0 0 0
000000000000000000000000000000000000000000000000
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
O m O M l0 N \0 N %O M t m 01 O M O if 1 I- M l0 M m (- m m (- O I- M 01 O1 d' N %O d' O M H m l0 N 'd' 1 10 N O M l0 %0 H 01 r-4 w 'd' ri 01 m 01 ri M In w N LO
ri ri r - i NNM Cl) d 'd'InLn\010I-0000riNmNrmkOCOOI m mr-0Nrid'rAko00 m r- m0 Nr- mm v 0r- m N N
MMMMMMMMMMMMMMM -CT d'd cYct'C rgT c;r f1111%o6mif ko0 o O01Nr-mo -InkonmInd'q;Yd'd'MMMMMMMMMNNN
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 r HLO ri O O O O O O O O O O O O O O O O O O O O O O
0000000000000000000000000000000000000000000000000
0HNm.4 0 H N M -% M W t� W 0 0 H N M --;T LO kD r- w m oHNm- rrLowr- O OOr- iNM w r- w m 0 r-I N
rir - Irir - iririririririNNNN NNNNNNMMMMM f`)MMMf" v qw--" d' d''1'v 0\OW\0W\0\OWWr-I-I-
Time(h +m) Volume(AF) Q(CFS) 0 150.0 300.0 450.0 600.0
di
F
40
M
r
17
0+ 5
0.0076
1.11
0 +10
0.0479
------------------------------------------------------------------
Total
soil rain loss =
0.90 (In.)
15.80
Total
effective runoff =
2.97 (In.)
0 +25
---------------------------------------------------------------------
44.64
0 +30
.ri
Total
soil -loss volume =
19.6842 (Acre -Feet)
60.12
Total
storm runoff volume
= 64.8369 (Acre -Feet)
,.,
---------------------------------------------------------------------
65.99
0 +50
2.8097
+++++++++++++++++++++++++++++++++++++
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
3.2807
68.39
6 - H
O U R S T O R M
69.50
1+ 5
R u n b f
f H y d r o g r a p h
1 +10
--------------------
-----------------------------------------------
1 +15
„�
72.49
7
Hydrograph in
5 Minute intervals (CFS)
Time(h +m) Volume(AF) Q(CFS) 0 150.0 300.0 450.0 600.0
di
F
40
M
r
17
0+ 5
0.0076
1.11
0 +10
0.0479
5.84
0 +15
0.1567
15.80
0 +20
0.3589
29.36
0 +25
0.6663
44.64
0 +30
1.0389
54.10
0 +35
1.4529
60.12
0 +40
1.8917
63.71
0 +45
2.3462
65.99
0 +50
2.8097
67.30
0 +55
3.2807
68.39
1+ 0
3.7593
69.50
1+ 5
4.2464
70.72
1 +10
4.7394
71.58
1 +15
5.2386
72.49
1 +20'
5.7443
73.42
1 +25
6.2568
74.41
1 +30
6.7762
75.42
1 +35
7.3030
76.50
1 +40
7.8374
77.59
1 +45
8.3799
78.77
1 +50
8.9308
79.98
1 +55
9.4905
81.28
2+ 0
10.0594
82.61
2+ 5
10.6384
84.07
2 +10
11.2284
85.66
2 +15
11.8309
87.49
2 +20
12.4471
89.46
2 +25
13.0781
91.62
2 +30
13.7234
93.70
2 +35
14.3837
95.88
2 +40
15.0593
98.09
2 +45
15.7514
100.49
2 +50
16.4607
102.99
2 +55
17.1891
105.76
3+ 0
17.9378
108.71
3+ 5
18.7092
112.01
3 +10
19.5050
115.55
3 +15
20.3286
119.59
3 +20
21.1825
123.98
3 +25
22.0671
128.43
3 +30
22.9717
131.35
3 +35
23.8828
132.30
3 +40
24.7935
132.23
3 +45
25.7103
133.12
3 +50
26.6732
139.81
3 +55
27.7325
153.82
4+ 0
28.9715
179.90
Q
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U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CivilCadd /CivilDesign, 1990, Version 2.2
w
Study date 4/ 3/91
+++++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
------------------------------------------------------------------------
+� San Bernardino County Synthetic Unit Hydrology Method
Manual date - August 1986
*� ---------------------------------------------------------------------
UNIT HYDROGRAPH FOR CITRUS AVE STORM DRAIN
POINT OF CONCENTRATION @ CITRUS & ARROW
Q 100 YEAR 24 HOUR
FILE NAME : TON224
-------------------------------------------------------------- - - - - --
.,
Storm Event Year = 100
SCS cn
"w
Antecedent Moisture Condition = 3
(acres)
Area averaged rainfall intensity
isohyetal data:
(AMC3)
Sub -Area Duration
Intensity
0.390
(acres) (hours)
(inches)
9.23 0.356
Rainfall data for year 100
0.610
98.0
262.40 1
1.52
--------------------------------------------------------------------
Rainfall data for year 100
*�
262.40 6
3.87
-
--------------------------------------------------------------------
Rainfall data for year 100
262.40 24
9.25
--------------------------------------------------------------------
di
+++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
* * * * * * ** Area - averaged max loss rate, Fm * * * * * * **
SCS curve SCS curve Area Area Fp(Fig c6) Ap Fm
No.(AMCII) No.(AMC 3) (Acres) Fraction (In /Hr) (dec.) (in /hr)
di 32.0 52.0 262.40 1.000 0.785 0.390 0.306
b
h
OR
rrr
Area - averaged adjusted loss rate Fm (In /Hr)= 0.306
* * * * * * * ** Area - Averaged low loss rate fraction, Yb * * * * * * * * **
Area
Area
SCS cn
SCS cn
S Pervious
(acres)
fract
(AMC2)
(AMC3)
yield fr
102.34
0.390
32.0
52.0
9.23 0.356
160.06
0.610
98.0
98.0
0.20 0.960
Area - averaged catchment yield fraction, Y = 0.725
Area - averaged low loss fraction, Yb = 0.275 '
+++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
User entry of time of concentration = 0.384 (hours)
Watershed area = 262.40 acres
Catchment Lag time = 0.307 hours
Unit interval = 5.000 minutes
Unit interval percentage of lag time = 27.1267
Hydrograph baseflow = 0.00 (CFS)
Average maximum watershed loss rate(Fm) = 0.306 (In /hr)
k5-
4"
d j Average low loss rate fraction (Yb) = 0.275 (decimal)
Valley Developed S -Graph Selected
Computed peak 5- minute rainfall = 0.563 inches
Computed peak 30- minute rainfall = 1.152 inches
+ri Specified peak 1 -hour rainfall = 1.520 inches
Computed peak 3 -hour rainfall = 2.696 inches
Specified peak 6 -hour rainfall = 3.870 inches
Specified peak 24 -hour rainfall = 9.250 inches
°"
Rainfall depth
area reduction factors:
di
Using a total
area of
262.40 acres (Ref: fig. E -4)
40
5- minute factor
= 0.988
Adjusted rainfall = 0.556
inches
30- minute factor
= 0.988
Adjusted rainfall = 1.138
inches
+d
1 -hour factor
= 0.988
Adjusted rainfall = 1.501
inches
3 -hour factor
= 0.998
Adjusted rainfall = 2.692
inches
*wt
6 -hour factor
= 0.999
Adjusted rainfall = 3.867
inches
24 -hour factor
---------------------------------------------------------------------
= 1.000
Adjusted rainfall = 9.247
inches
'�"
U
n i t H y d r o g r a p h
++++++++++++++++++++++++++++++++++++++
+ + + + + + + + + + + + + + + + +
+ + + + + + + + + + + + ++
Interval
'S' Graph Unit Hydrograph
.A,
Number
Mean values (CFS)
---------------------------------------------------------------------
1
1.710
54.251
2
9.008
231.608
3
24.312
485.672
4
45.021
657.151
5
68.189
735.214
6
82.115
441.937
7
90.532
267.116
8
95.111
145.316
9
97.534
76.884
10
98.439
28.705
11
98.927
15.497
12
99.415
15.492
13
100.000
18.559
---------------------------------------------------------------------
dd
Peak Unit Adjusted
mass
rainfall Unit rainfall
Number
(inches)
(inches)
1
0.56
0.56
2
0.73
0.18
3
0.86
0.13
4
0.97
0.11
5
1.06
0.09
6
1.14
0.08
7
1.21
0.07
8
1.28
0.07
9
1.34
0.06
dd
10
1.40
0.06
11
1.45
0.05
12
1.50
0.05
13
1.57
0.07
14
1.63
0.06
15
1.69
0.06
*4,
16
1.75
0.06
41
17
1.81
0.06
18
1.86
0.06
+w
19
1.92
0.05
20
1.97
0.05
21
2.02
0.05
22
2.07
0.05
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
%om -ld - fpm H - tDmr- ICIDOIr-i -cTtD m H-c % Dmr- 1 * owr-IMo00OmmwoNmr-mNd'[-O*tr -Id o - im0w0Nd't-Mr- Id'1000OMMr
HriNNNNMMMM-CT -grd'd lnlllll mt Dl 0to�Dr�r�r�r�wm WCQOIO MM0OOOOr- HC- 1HNNNNMMMMd d'd d cYlClt[)tflm%Dko\Ol0
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
%0 10 � � 10 %D k0 kO k0 kO %O %D � � k0 k0 1D t0 � 1O � %O 1O %O kO l0 � k0 k0 k0 � k0 %O kO 9 r: 9 I� t� l� l� I� I� t� l� l� g g r: I� l� t� t� [� l� I� [� I� t� I� g g g g
e- INM- ;tMk01- CO0 0riNM- cTMkDr-WM0r1NM- 'tMt0r-w moHNMd m%D rI COOIOriNMd'Ln10l- wmoHNMd ' if %D r- w oHNMd'
lfllnlfltlllflUllnMM%D10 1 0 10 10 10 10 10 10 10 t- C- l-I-[-hl-r-(�E�ww COCOCOCO000000COOIOIOIO mm0O%mm0000000000 H riHr-I r1
rirlririe-Ir HC-4T- 4HHrlririr HHr-I HC- 4HrlrirlHHHrie- H H C-i T-i r-i H H H r-Ir- IHHrlrir - IririHrle- iNNNNNN NNN NNNNN N
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
OIN Kr ko M V-4 mMr grVD 4m mr h m i- Id'lO m lo mrlC nw0Nd kom0NKr�oM0Nd
�Ohhr- r- wwC0000101o010100000rIrirlriNNNN NM C1 mm qr d d qT -, U')LC1M nLO%D W WWr- hr— r- MMCO 000001d1O1Mm000
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
h h h h h h h h h h h h h h CO CO CO CO CO CO CO CO CO CO O CO CO 00 00 CO CO 00 CO CO CO O . O . 0 O 00 O 0 00 O CO CO CO O CO CO CO CO CO CO CO 0 CO 0 CO CO C0 01 01 Ol
lf1�Dh00010HNm grm%Dh00010riNm.1- TmtDr-w m 0rINmICT m kDr NMd'm%Dr- w m0rINmg:T M kor- M M0C-iN m-t:rMk0 h00
t-
IrlrlrlriNNNNNNNNNNmmmm m(`1mmmmgKTd'gq;:rqd'd'd'q::rm m Llllnlnlfllfln n0%Dfl o%D%DkDkD%DQkDQhhhhhhhhh
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N
T
279 9.06 0.02
280 9.08 0.02
281 9.10 0.02
282 9.13 0.02
283 9.15 0.02
284 9.17 0.02
285 9.19 0.02
286 9.21 0.02
287 9.23 0.02
288 9.25 0.02
Unit Unit Unit Effective
Period Rainfall Soil -Loss Rainfall
(number) (inches) (inches) (inches)
1 0.0202 0.0056 0.0146
2 0.0202 0.0056 0.0147
3 0.0203 0.0056 0.0147
4 0.0203 0.0056 0.0147
5 0.0204 0.0056 0.0148
6 0.0204 0.0056 0.0148
7 0.0204 0.0056 0.0148
8 0.0205 0.0056 0.0148
9 0.0205 0.0057 0.0149
10 0.0206 0.0057 0.0149
11 0.0206 0.0057 0.0149
12 0.0206 0.0057 0.0150
13 0.0207 0.0057 0.0150
14 0.0207 0.0057 0.0150
15 0.0208 0.0057 0.0151
i 16 0.0208 0.0057 0.0151
17 0.0209 0.0057 0.0151
18 0.0209 0.0058 0.0151
19 0.0210 0.0058 0.0152
20 0.0210 0.0058 0.0152
21 0.0210 0.0058 0.0153
22 0.0211 0.0058 0.0153
23 0.0211 0.0058 0.0153
24 0.0212 0.0058 0.0153
25 0.0212 0.0058 0.0154
26 0.0213 0.0059 0.0154
27 0.0213 0.0059 0.0155
28 0.0214 0.0059 0.0155
29 0.0214 0.0059 0.0155
30 0.0215 0.0059 0.0156
31 0.0215 0.0059 0.0156
32 0.0216 0.0059 0.0156
33 0.0216 0.0060 0.0157
34 0.0217 0.0060 0.0157
35 0.0217 0.0060 0.0157
36 0.0218 0.0060 0.0158
37 0.0218 0.0060 0.0158
38 0.0219 0.0060 0.0158
39 0.0219 0.0060 0.0159
40 0.0220 0.0060 0.0159
41 0.0220 0.0061 • 0.0160
42 0.0221 0.0061 0.0160
43 0.0221 0.0061 0.0161
44 0.0222 0.0061 0.0161
45 0.0223 0.0061 0.0161
46 0.0223 0.0061 0.0162
47 0.0224 0.0062 0.0162
48 0.0224 0.0062 0.0162
49 0.0225 0.0062 0.0163
[ 1 C,_ ! ILA It. A a I t- l t_! !A &A t ,__ i 9- VA t ' 1 t 1 E i VA V-1 t.1 t - i
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N
W JJJJJJJJO1d\O\O\00100 0LnLIUIUI0 0LnUIUI0 UI4P.PJ�b .P PoPo0blob 4Pobob lP.PW W W W W W W W W W W W W W W N N N N N N N
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
O O O O O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
J14 JJJJJJJJJJJJJJJJJJJJJJJJON010 ONa%ONON0%00101 W 0100 0%0 00 00001ONd 00m010mm0%mm010 m
J- 11mm010Ul0ID. ASP W W W W NNN I-- HF - +N0000 vDwwtO W W W W WJJ- 4-1mm0\01O1UIUIUIUIUI.P-AdP P-P6P W W W W W W NNN
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
N N N N F-�N N I--' N F' I--'N F-' F� F-� N N F' F' N F-� F-' F-'F'N N Nh� NF-' F-' F-' I-' F-� NF-' F' i-' F' I--' F-'N I--� N I-'►-' NN F-' h' I--' I-' F-'I -� F-' NF' F' 1-'F -' �-' F-' N F'
0000WtOtOtOtOWWkDWW%DtO0 W W W W W W W W W W W W W W JJJJJJJJJJJJJJJJJJJ0 01O1m0 mm 010 m00 m0
W NF-+O0w -4mm 0 A.w W N H 0 0 w 0 -1 -j 0 0 A. I-w W NI-'I-°0w0w WJJmO O.POP W W NNH1- 0 0wkO W W JJ010 0LnUI.P J.w
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JJJJJJJJ01 01 0 1 01 01 m01010101UlUlUl(.nul 0 00LnU1 W W W W W W W W W WNNNNNN W W W W H h'F-'HHH
J01Ul.P WNHO10wJOlUI PW NHOl0wJMUlP W WH0 %D00J01Ul.PWNHOl000JmUl-Ch.wW H0ww-4m0Ath. W NH 0w0-400.P
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
W N N N N N N N N N N N N N
wONUI.P W NF-+O0 W J0 a%ulUl.PJP W W NNNI--+HOOO 0 0 0000w O%Dw0 O0owww W w
Lq3 l 0 W 01W JUl0 W wwUIJW 01wmWmW 07UlOJW OOH P10J P. w O.P. 0 0 m -0. H 0 -4 ON w W w w Ul A. W H w--jUI.PNN10W0 0w WFj
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W W N W NHH - +F-+OOOO�O�OIOIOIOIOIO W OOOOW W0�00 W ODODJJJIOIOtOIOtO W000�W0o WO�OOOOW0000 WOOOOO�W OOOOO�JJJJJJ
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O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
W W W W W W W N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N
U1 W W NH00%O10JJ0101U100- C--P-P W W W W W W HF- +HHH00O.P.PW W W W W W W NNNNNN W H H H H H H H H H 000000
N0 W H 0 -j W P0M.P.w0w0Hw W H J P0 w W 100 p.w0w0J%W N100000wWO10J0 A.wHO10w0101.P W W H0wJJUIUI W
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inn- w 0rIItTm[-0 ggrw OmmN0mNHr Nr-10 wr- wm -c:r m m N N r-4 Ho -c'd'MMMN NNNririrlriOOO0001010N01ONmco
MMMd'd'd'd'MMC'd'1n10OlnMl - lnd ' d'q;rMMM MMNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNriririHHHr -1
O O O O O O O O O O O O O H H M O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
SON%Dmw wMr101OMO01U11nm1f mm0NO 0rid'OOMr�mm%OM rI00%Dd'NO01Mr1O01w%Dm-�rMNNr-40m 0m r- 'D m d'd' MNN
Md ll 1lm 0 %Drl- C'%rr- wN CTmmmm01mwkDd'MM NrIrIOOm01m01000000wwr-Ol m01000OOOwww W COwwr- t- t- [- I- l- l- [- I- I- I- I-
ri ri ri ri ri r I H r-I r♦ ri ri N N N N N N ,-4 ri ri H H ri H H ri ri ri ri O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O C O 0 0 0
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
v
mr-0r-mmmd N�Od 0 Mr im .0Nd'%0 N0 Mko 1 10r101rIw-crTim0101r mmwNlnr- Nr- mwN 0r-m0%OM0 [-IT NOI%OIt* -m Mri
m H mmrl-0NH- t4lH%D00mr- nlnNr- n0ldl0r-mNHwr-\Od'M NN r1O01O w MNNe-Irie -I000m m 0100w wr-I-(-I-w\Oww%0
d lnlfllnln�O�Olnl 11l0l000OlNI�LnOI�l11wm nml gr%'d'-CT N) C') Mf7MMMMMNNNmmmmMCIMMCIMNNNNNNNNNNNNNNN
O O O O O O O O O O O O O ririlflri 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
w0 0r -iNm -q 0%Or-w0 0T- 4Nm'4 0r-w0 0HNr; , tm Or- w oOriNm ;tm Or- woOriNm ,rm Or- wmOriN Md'mwr- woo i
t�[�000000CO000000000000 m o 010101O101O0101000OOOOOOOri ri ririririt- It- IririNN NNNNNNNNMM MMMMMMMMd d'
ri ri ri ri ri ri rI ri ri r-I ri ri ri ri ri ri H ri H ri ri ri N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N
f"
242
0.0259
0.0071
0.0188
243
0.0257
0.0071
0.0186
244
0.0255
0.0070
0.0185
245
0.0253
0.0070
0.0184
nri
246
0.0251
0.0069
0.0182
247
0.0250
0.0069
0.0181
248
0.0248
0.0068
0.0180
249
0.0246
0.0068
0.0179
do
250
0.0245
0.0067
0.0177
251
0.0243
0.0067
0.0176
252
0.0242
0.0067
0.0175
253
0.0240
0.0066
0.0174
Ni
254
0.0239
0.0066
0.0173
255
0.0237
0.0065
0.0172
256
0.0236
0.0065
0.0171
ad
257
0.0234
0.0065
0.0170
258
0.0233
0.0064
0.0169
on
259
0.0232
0.0064
0.0168
260
0.0231
0.0063
0.0167
tr
261
0.0229
0.0063
0.0166
262
0.0228
0.0063
0.0165
go
263
0.0227
0.0062
0.0164
+ri
264
0.0226
0.0062
0.0164
265
0.0224
0.0062
0.0163
+�
266
0.0223
0.0061
0.0162
267
0.0222
0.0061
0.0161
"
268
0.0221
0.0061
0.0160
269
0.0220
0.0061
0.0159
270
0.0219
0.0060
0.0159
271
0.0218
0.0060
0.0158
272
0.0217
0.0060
0.0157
273
0.0216
0.0059
0.0156
274
0.0215
0.0059
0.0156
275
0.0214
0.0059
0.0155
276
0.0213
0.0059
0.0154
**
277
0.0212
0.0058
0.0154
278
0.0211
0.0058
0.0153
279
0.0210
0.0058
0.0152
280
0.0209
0.0058
0.0152
281
0.0208
0.0057
0.0151
282
0.0208
0.0057
0.0150
283
0.0207
0.0057
0.0150
+w
284
0.0206
0.0057
0.0149
285
0.0205
0.0056
0.0149
286
0.0204
0.0056
0.0148
287
0.0203
0.0056
0.0147
*"
288
0.0203
0.0056
0.0147
dN
Total
soil rain loss = 2.38 (In.)
Total
effective runoff =
6.86 (In.)
AN--------------------------- ------------------------------------------
Total
soil -loss volume =
52.0687 (Acre -Feet)
Total
storm runoff volume =
150.0541 (Acre -Feet)
f
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -----------------------------------
24 - H
O U R S T O R M
R u n o f f
H y d r o g r a p h
-------------y---g
H dro ra h in
------------------------------------------
5 Minute intervals (CFS)
-------- - - - - --
Time(h +m) Volume(AF) Q(CFS) 0
150.0 300.0
450.0 600.0
'w
-----------------------------------------------
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FLOOD HYDROGRAPH ROUTING PROGRAM
Copyright (c) CivilCADD /CivilDESIGN, 1990
Study date: 4/ 3/91
---------------------------------------------------------------------
ROUTING UNIT HYDROGRAPH INTO BASIN
100 YEAR, 3 HOUR
dd CITUS AVENUE DETENTION BASIN
FILE NAME : ROT203'
MR ---------------------- ------------------- ---------
********************* HYDROGRAPH INFORMATION * * * * * * * * * * * * * * * * * * * * **
mi
From study /file name: TON23.rte
40 ******* * * * * * * * * * * * * * * * * * * * * *HYDROGRAPH DATA * * * * * * * * * * * * * * * * * * * * * * * * * * **
Number of intervals = 48
Time interval = 5.0 (Min.)
Maximum /Peak flow rate = 592.0 (CFS)
Total volume = 46.22 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
+.� Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000 0.000
**************************************** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * **
.w
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 1.000 to Point /Station 2.000
* * ** RETARDING BASIN ROUTING * * **
User entry of depth - outflow storage data
--
-----------------------------------
Total number of inflow
hydrograph
intervals =
48
Hydrograph time unit =
5.000 (Min.)
.�
Initial
depth in storage basin =
0.00(Ft.)
--------------------------------------------------
------------------
**
----------------------------------------------
Initial
basin depth =
0.00 (Ft.)
Initial
basin storage
= 0.00
(Ac.Ft)
Initial
basin outflow
= 0.00 (CFS)
°'"
----------------------------------------------
Ai
--------------------------------------------------------------------
Depth vs. Storage and
Depth vs. Discharge
o utfl ow
data:
/2) ()dt /2)
Basin Depth Storage
(Ft.) (Ac.Ft)
(
(A
ai
-------------------------------------------
0.000
0.000
0.000
0.000
0.000
4.000
5.421
69.487
5.182
5.660
5.000
7.672
83.513
7.384
7.960
4i
6.000
10.036
95.501
9.707
10.365
7.000
12.512
106.144
12.146
12.878
8.000
15.094
115.812
14.695
•15.493
9.000
17.788
124.734
17.358
18.218
do
10.000
20.597
133.058
20.139
21.055
11.000
23.521
140.892
23.036
24.006
12.000
26.565
148.312
26.054
27.076
13.000
29.739
155.378
29.204
30.274
40
14.000
33.052
162.137
32.494
33.610
---------------------------------------
Hydrograph Detention Basin Routing
Graph values: 'I'= unit inflow; 'O'= outflow at time shown
Time Inflow Outflow Storage Depth
(Hours) (CFS) (CFS) (Ac.Ft) .0 148.0 296.0 444.0 592.0 (Ft.)
0.083 1.6 0.1 0.005 0 0.0
0.167 8.3 0.5 0.037 0 0.0
0.250 22.5 1.7 0.136 OI 0.1
0.333 42.0 4.3 0.337 0 I 0.2
0.417 64.1 8.4 0.658 O I 0.5
0.500 78.2 13.7 1.072 0 I 0.8
0.583 87.7 19.6 1.529 0 I 1.1
0.667 93.9 25.6 1.998 0 I 1.5
0.750 98.4 31.6 2.463 0 I 1.8
0.833 101.6 37.4 2.914 0 I 2.2
0.917 104.8 42.9 3.349 0 I 2.5
1.000 108.2 48.3 3.768 0 I 2.8
1.083 112.0 53.5 4.176 0 I 3.1
1.167 115.6 58.6 4.573 0 I 3.4
1.250 119.6 63.6 4.962 0 I 3.7
1.333 124.0 68.5 5.346 0 I 3.
1.417 128.4 71.4 5.733 0 I 4.1
1.500 131.4 73.9 6.127 0 I 4.3
1.583 132.3 76.3 6.518 0 I 4.5
1.667 132.2 78.7 6.895 0 I 4.7
1.750 133.1 80.9 7.259 0 I 4.8
1.833 139.8 83.3 7.634 0 I 5.0
1.917 153.8 85.5 8.064 0 I 5.2
2.000 179.9 88.3 8.614 0 I 5.4
2.083 245.1 92.6 9.455 0 I 5.8
2.167 368.3 99.2 10.907 0 I 6.4
2.250 512.9 108.8 13.225 0 I 7.3
2.333 591.9 119.6 16.243 0 I 8.4
2.417 592.0 129.7 19.461 0 I 9.6
2.500 425.4 136.9 22.046 0 I 10.5
2.583 312.2 141.2 23.628 0 I 11.0
2.667 232.6 143.3 24.525 0 I 11.3
2.750 185.2 144.4 24.972 0 I 11.5
2.833 151.0 144.8 25.134 OI 11.5
2.917 135.4 144.8 25.123 0 11.5
3.000 127.0 144.6 25.030 IO 11.5
3.083 118.5 144.2 24.881 IO 11.4
3.167 97.3 143.6 24.633 I 0 11.4
3.250 78.0 142.7 24.251 I 0 11.2
3.333 55.5 141.4 23.732 I 0 11.1
3.417 32.1 139.7 23.066 I 0 10.8
3.500 18.0 137.6 22.284 I 0 10.6
3.583 9.5 135.3 21.438 I 0 10.3
3.667 4.9 133.0 20.564 I 0 10.0
3.750 2.5 130.3 19.683 I 0 9.7
3.833 1.6 127.8 18.808 I 0 9.4
3.917 1.0 125.2 17.946 I 0 9.1
4.000 0.6 122.5 17.098 I 0 8.7
4.083 0.0 119.7 16.267 I 0 8.4
4.167 0.0 117.0 15.452 I 0 8.1
4.250 0.0 114.2 14.655 I 0 7.8
4.333 0.0 111.3 13.879 I 0 7.5
4.417 0.0 108.4 13.123 I 0 7.2
4.500 0.0 105.6 12.386 I 0 6.9
4.583 0.0 102.5 11.669 I 0 6.7
4.667 0.0 99.5 10.973 I 0 6.4
4.750 0.0 96.6 10.298 I 0 6.1
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0.4
0.034 O
0.0
"1.0.333
0.0
0.4
0.031 O
0.0
0.417
0.0
0.4
0.028 O
0.0
0.500
0.0
0.3
0.026 O
0.0
10.583
0.0
0.3
0.024 O
0.0
0.667
0.0
0.3
0.022 O
0.0
0.750
0.0
0.3
0.020 O
0.0
10.833
0.0
0.2
0.018 O
0.0
40.917
0.0
0.2
0.017 O
0.0
1.000
0.0
0.2
0.015 O
0.0
1.083
0 . 0
0.2
0.0
11.167
0.0
0.2
0.013 O
******* * * * * * * * *
* * * * * * * * * * * * *HYDROGRAPH DATA****************************
do
Number of intervals = 134
Time interval = 5.0 (Min.)
4 4
Maximum /Peak flow rate = 144.8 (CFS)
Total volume = 46.21 (Ac.Ft)
Status
of hydrographs being held in storage
3 Stream 4 Stream
5
Stream 1 Stream 2 Stream
0.000 0.000 0.000
0.000
+w
Peak (CFS) 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000
* * * * * * * * * * * * * * * * *
0.000
* * * * * * * **
****************************************
* * * * *
------------------
r--- -------------------------------- ---------
- - - - --
err
N
R
a
f"
.o W ��
O
do FLOOD HYDROGRAPH ROUTING PROGRAM
4M Copyright (c) Civi1CADD /CivilDESIGN, 1990
Study date: 4/ 3/91
ROUTING UNIT HYDROGRAPH INTO BASIN
100 YEAR, 6 HOUR
+d CITRUS AVENUE DETENTION BASIN
FILE NAME : ROT206
------------------------------------------
* * * * * * * * * * * * * * * * * * * ** HYDROGRAPH INFORMATION * * * * * * * * * * * * * * * * * * * * **
From study /file name: TON26.rte
******* * * * * * * * * * * * * * * * * * * * * *HYDROGRAPH DATA * * * * * * * * * * * * * * * * * * * * * * * * * * **
di Number of intervals = 84
Time interval = 5.0 (Min.)
Maximum /Peak flow rate = 592.0 (CFS)
Total volume = 64.84 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
+*� Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000 0.000
**************************************** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * **
.e
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
+•. Process from,Point /Station 1.000 to Point /Station 2.000
* * ** RETARDING BASIN ROUTING * * **
User entry of depth - outflow storage data
---------------------------------------
Total number of inflow
hydrograph intervals =
84
Hydrograph time unit =
5.000 (Min.)
Initial
depth in storage
basin =
0.00(Ft.)
+�
--------------------------------------------------------------------
""�
------------------------------------------------
Initial
basin depth =
0.00 (Ft.)
Initial
basin storage
= 0.00
(Ac.Ft)
Initial
basin outflow
= 0.00 (CFS)
-----------------------------------------------
do
--------------------------------------------------------------------
Depth vs. Storage and
Depth vs. Discharge
Outflow
data:
(S- O *dt /2) (S +O *dt /2)
Basin Depth Storage
(Ft.) (Ac.Ft)
(CFS)
(Ac.Ft)
(Ac.Ft)
dw
----------------
0.000
----------------------------
0.000
0.000
0.000
0.000
4.000
5.421
69.487
5.182
5.660
5.000
7.672
83.513
7.384
7.960
6.000
10.036
95.501
9.707
10.365
7.000
12.512
106.144
12.146
12.878
8.000
15.094
115.812
14.695
•15.493
9.000
17.788
124.734
17.358
18.218
do
10.000
20.597
133.058
20.139
21.055
11.000
23.521
140.892
23.036
24.006
12.000
26.565
148.312
26.054
27.076
13.000
29.739
155.378
29.204
30.274
14.000
33.052
162.137
32.494
33.610
-----------------------------------------------
�
d•7 �
0
r1
F
Hydrograph Detention Basin Routing
------------------------------------------------------
Graph values: 'I' =- unit - inflow; 'O'= outflow at time shown
-------- - - - - -- ------------------------------------- - - - - --
Inflow
(CFS)
Outflow
(CFS)
Storage
(Ac.Ft)
.0
148.0
296.0
444.0
592.0
Depth
(Ft.)
1.1
0.0
0.004
0
0.0
5.8
0.3
0.026
0
0.0
15.8
1.2
0.095
0
0.1
29.4
3.0
0.236
OI
0.2
44.6
5.9
0.460
0
I
0.3
0.6
54.1
9.6
0.747
0
I
60.1
13.6
1.061
0
I
0.8
63.7
17.7
1.379
0
I
1.0
66.0
21.7
1.690
0
I
1.2
67.3
25.5
1.987
0
I
1.5
68.4
29.1
2.267
0
I
1.7
69.5
32.4
2.530
0
I
1 . 9
70.7
35.6
2.778
0
I
2.1
71.6
38.6
3.013
OI
2.2
72.5
41.4
3.233
OI
2.4
73.4
44.1
3.441
OI
2.5
74.4
46.6
3.638
0 I
2.7
75.4
49.0
3.824
0 I
2.8
76.5
51.3
4.002
0 I
3.0
77.6
53.5
4.172
0 I
3.1
78.8
55.6
4.335
OI
3.2
80.0
57.6
4.492
OI
3.3
81.3
59.5
4.644
OI
3.4
82.6
61.4
4.792
OI
3.5
84.1
63.3
4.936
OI
3.6
85.7
65.1
5.079
OI
3.7
87.5
66.9
5.220
OI
3 . 9
89.5
68.7
5.363
OI
4.0
91.6
70.0
5.508
OI
4.0
93.7
71.0
5.661
0 I
4.1
95.9
72.0
5.821
0 I
4.2
98.1
73.0
5.990
0 I
4.3
100.5
74.1
6.167
OI
4.3
103.0
75.3
6.353
OI
4.4
4.5
105.8
76.5
6.549
OI
108.7
77.8
6.756
OI
4.6
112.0
79.2
6.976
0 I
4.7
115.6
80.6
7.209
0 I
4.8
119.6
82.2
7.458
0 I
4.9
124.0
83.8
7.725
0 I
5.0
5.1
128.4
85.2
8.013
0 I
5.3
131.4
86.8
8.315
0 I
5.4
132.3
88.3
8.620
0 I
5.5
132.2
89.8
8.917
0 I
5.6
133.1
91.3
9.207
0 I
5.8
139.8
92.8
9.513
0 I
5.9
153.8
94.7
9.878
0
I
6.1
179.9
96.9
10.368
0
I
6.5
245.1
100.3
11.152
0
I
7.0
368.3
106.3
12.553
0
I
I
7.9
512.9
114.8
14.826
0
I
9.0
591.9
124.8
17.805
0
I 10.1
592.0
134.1
20.991
0
I
11.0
425.4
141.0
23.547
0
11.5
312.2
144.7
25.103
0
I
11.8
232.6
146.9
25.974
0
I
I
11.9
185.2
147.9
26.398
0
I
Time
"*
Hours)
0.083
0.167
0.250
0.333
+�rli 0.417
0.500
+� 0.583
0.667
' 0.750
0.833
0.917
1.000
1.083
1.167
1.250
1.333
1.417
*� 1.500
1.583
1.667
1.750
1.833
to 1.917
2.000
+w 2.083
2.167
2.250
2.333
2.417
di 2.500
2.583
2.667
2.750
2.833
2.917
'*t
3.000
3.083
3.167
3.250
3.333
3.417
3.500
*+ 3.583
3.667
3.750
3.833
3.917
4.000
4.083
4.167
4.250
4.333
4.417
4.500
,i 4.583
4.667
qM 4.750
No
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:rICT d d d' rKrd d'IL'd MMMMCIMMN NNNe-IHHH000O1O1C1www w r- r- r- kD %D m w -.T 1. MMM NNNNNHHH rir-IriHH
ri H ri e-i ri ri ri ri ri r-i ri e-i ri H ri r-I ri r-I r-I ri ri r-I r-I ri ri ri ri e-i ri ri
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Mri000101flMriOCO�OInMr• IOOOtOIlIMt- IOCO�OInMriOCO\DlnMr- IOCOlDt11M HOW %DMM HOW omm HO00%Dmm Ho W OMM H OCO
000100HNf")d'Ulm%.Ot-w 0100HNMd 'LnLfllOf 00HNMd' L nLO%Dr�CO0100HNMd-InInWL
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Ll L1 L1 Ll U L . Ll LnL1L11LnUlLn%O1 11 tOk l 1t ��k �k `r �t`��1�[���!` t` 00OOCOOCOO COCOOCOOO ;C1O; O;a;O1C1O1 C1O101010. 0 .
r - f // r f,-- ^-� ri ri
r jr
40
on
-W
0.5
4.0. 167
0.0
7.9
0.614 0
0.4
10.250
0.0
7.2
0.562 O
0.4
4 40.333
0.0
6.6
0.515 O
0.3
0.417
0.0
6.0
0.471 0
0.3
X10.500
0.0
5.5
0.431 0
0.3
10.583
0.0
5.1
0.395 0
0.3
""0.667
0.0
4.6
0.361 0
0.2
40.750
0.0
4.2
0.331 0
0.2
10.833
0.0
3.9
0.303 0
0.2
,40.917
0.0
3.6
0.277 0
0.2
1.000
0.0
3.3
0.254 0
0.2
41.083
0.0
3.0
0.232 0
0.2
11.167
0.0
2.7
0.213 0
0.1
+x.1.250
0.0
2.5
0.195 0
0.1
4 1.333
0.0
2.3
0.178 0
0.1
1.417
0.0
2.1
0.163 O
0.1
11.500
0.0
1.9
0.149 0
0.1
'" ° 1.583
0.0
1.8
0.137 0
0.1
41.667
0.0
1.6
0.125 0
0.1
11.750
0.0
1.5
0.115 0
0. 1
,,.x.1.8 3 3
0.0
1.3
0.105 O
0.1
1.917
0.0
1.2
0.096 0
0.1
2.000
0.0
1.1
0.088 0
0.1
12.083
0.0
1.0
0.081 0
0.1
2.167
0.0
0.9
0.074 0
0.0
2.250
4
0.0
0.9
0.067 0
0.0
2.333
0.0
0.8
0.062 0
0.0
2.417
0.0
0.7
0.057 O
0.0
2.500
0.0
0.7
0.052 0
0.0
2.583
0.0
0.6
0.047 0
0.0
12.667
0.0
0.6
0.043 0
0.0
2.750
0.0
0.5
0.040 0
0.0
2.833
0.0
0.5
0.036 0
0.0
2.917
0.0
0.4
0.033 0
0.0
13.000
0.0
0.4
0.030 0
0.0
0.0
0.4
0.028 0
0.0
2 3.083
3.167
0.0
0.3
0.026 0
0.0
13.250
0.0
0.3
0.023 O
0.0
3.333
0.0
0.3
0.021 0
0.0
1 3.417
0.0
0.3
0.020 0
0.0
3.500
0.0
0.2
0.018 0
0.0
13.583
0.0
0.2
0.016 0
0.0
3.667
0.0
0.2
0.015 0
0.0
3.750
0.0
0.2
0.014 0
0.0
13.833
0.0
0.2
0.013 0
I"
******* * * * * * * * *
* * * * * * * * * * * * *HYDROGRAPH DATA * * * * * * * * * * * * * * * * * * * * * * * * * * **
Number of intervals = 166
Time interval = 5.0 (Min.)
Maximum /Peak flow rate = 148.2
(CFS)
Total volume = 64.82 (Ac.Ft)
Status
of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream
4 Stream 5
Peak (CFS) 0.000 0.000 0.000
0.000 0.000
j
Vol (Ac.Ft) 0.000 0.000 0.000
0.000 0.000
**************************************** * * * * * * * * * * *
* * * * * * * * * * * * * * * * * * **
40
on
-W
r :
FLOOD HYDROGRAPH ROUTING PROGRAM
Copyright (c) Civi1CADD /CivilDESIGN, 1990
Study date: 4/ 3/91
ROUTING UNIT HYDROGRAPH INTO BASIN
100 YEAR, 24 HOUR
CITRUS AVENUE DETENTION BASIN
FILE NAME : ROT224
* * * * * * * * * * * * * * * * * * * ** HYDROGRAPH INFORMATION * * * * * * * * * * * * * * * * * * * * **
From study /file name: TON224.rte
******* * * * * * * * * * * * * * * * * * * * * *HYDROGRAPH DATA * * * * * * * * * * * * * * * * * * * * * * * * * * **
Number of intervals = 300
Time interval = 5.0 (Min.)
Maximum /Peak flow rate = 592.0 (CFS)
Total volume = 150.05 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000 0.000
**************************************** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * **
+++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 1.000 to Point /Station 2.000
* * ** RETARDING BASIN ROUTING * * **
User entry of depth- outflow - storage data
Total number of inflow hydrograph intervals = 300
Hydrograph time unit = 5.000 (Min.)
Initial depth in storage basin = 0.00(Ft.)
Initial basin depth = 0.00 (Ft.)
Initial basin storage = 0.00 (Ac.Ft)
Initial basin outflow = 0.00 (CFS)
Depth vs. Storage and Depth vs. Discharge data:
Basin Depth Storage Outflow (S- O *dt /2) (S +O *dt /2)
(Ft.) (Ac.Ft) (CFS) (Ac.Ft) (Ac.Ft)
0.000 0.000 0.000 0.000 0.000
4.000 5.421 69.487 5.182 5.660
5.000 7.672 83.513 7.384 7.960
6.000 10.036 95.501 9.707 10.365
7.000 12.512 106.144 12.146 12.878
8.000 15.094 115.812 14.695 • 15.493
9.000 17.788 124.734 17.358 18.218
10.000 20.597 133.058 20.139 21.055
11.000 23.521 140.892 23.036 24.006
12.000 26.565 148.312 26.054 27.076
13.000 29.739 155.378 29.204 30.274
14.000 33.052 162.137 32.494 33.610
Hydrograph Detention Basin Routing
Graph values: 'I'= unit inflow; 'O'= outflow at time shown
Time Inflow Outflow Storage - Depth
'Hours) (CFS) (CFS) (Ac.Ft) .0 148.0 296.0 444.0 592.0 (Ft.)
0.083 0.8 0.0 0.003 0 0.0
0.167 4.2 0.2 0.019 0 0.0
0.250 11.3 0.9 0.068 0 0.1
0.333 20.9 2.2 0.169 OI 0.1
0.417 31.8 4.2 0.328 OI 0.2
0.500 38.3 6.8 0.532 0 I 0.4
0.583 42.3 9.6 0.752 0 I 0.6
0.667 44.5 12.5 0.975 0 I 0.7
0.750 45.7 15.3 1.190 0 I 0.9
0.833 46.2 17.8 1.392 0 I 1.0
0.917 46.5 20.3 1.580 OI 1.2
1.000 46.8 22.5 1.755 OI 1.3
1.083 47.2 24.6 1.916 OI 1.4
1.167 47.3 26.5 2.066 OI 1.5
1.250 47.4 28.2 2.204 OI 1.6
1.333 47.5 29.9 2.330 OI 1.7
1.417 47.6 31.4 2.447 OI 1.8
1.500 47.7 32.7 2.554 OI 1.9
1.583 47.8 34.0 2.653 OI 2.0
1.667 47.9 35.2 2.745 OI 2.0
1.750 48.0 36.3 2.829 OI 2.1
1.833 48.1 37.3 2.906 0 2.1
1.917 48.2 38.2 2.978 0 2.2
2.000 48.3 39.0 3.045 0 2.2
2.083 48.4 39.8 3.106 0 2.3
2.167 48.5 40.5 3.163 0 2.3
2.250 48.6 41.2 3.216 0 2.4
2.333 48.7 41.9 3.265 0 2.4
2.417 48.8 42.4 3.311 0 2.4
2.500 48.9 43.0 3.353 0 2.5
2.583 49.0 43.5 3.393 0 2.5
2.667 49.2 44.0 3.430 0 2.5
2.750 49.3 44.4 3.465 0 2.6
2.833 49.4 44.8 3.497 0 2.6
2.917 49.5 45.2 3.528 0 2.6
3.000 49.6 45.6 3.556 0 2.6
3.083 49.7 45.9 3.583 0 2.6
3.167 49.8 46.3 3.608 0 2.7
3.250 50.0 46.6 3.633 0 2.7
3.333 50.1 46.9 3.655 0 2.7
3.417 50.2 47.1 3.677 0 2.7
3.500 50.3 47.4 3.698 0 2.7
3.583 50.4 47.6 3.717 0 2.7
3.667 50.6 47.9 3.736 0 2.8
3.750 50.7 48.1 3.754 0 2.8
3.833 50.8 48.3 3.771 0 2.8
3.917 50.9 48.6 3.788 0 2.8
4.000 51.1 48.8 3.804 0 2.8
4.083 51.2 49.0 3.820 0 2.8
4.167 51.3 49.2 3.835 0 2.8
4.250 51.4 49.3 3.849 0 2.8
4.333 51.6 49.5 3.864 0 2.9
4.417 51.7 49.7 3.878 0 2.9
4.500 51.8 49.9 3.891 0 2.9
4.583 52.0 50.1 3.905 0 2.9
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29.333 0.0 0.3 0.021 0 0.0
29.417 0.0 0.3 0.020 0 0.0
29.500 0.0 0.2 0.018 0 0.0
29.583 0.0 0.2 0.016 0 0.0
29.667 0.0 0.2 0.015 0 0.0
29.750 0.0 0.2 0.014 0 0.0
29.833 0.0 0.2 0.013 0 0.0
******* * * * * * * * * * * * * * * * * * * * * *HYDROGRAPH DATA * * * * * * * * * * * * * * * * * * * * * * * * * * **
Number of intervals = 358
Time interval = 5.0 (Min.)
Maximum /Peak flow rate = 149.0 (CFS)
Total volume = 150.04 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol ( Ac.Ft) 0.000 0.000 0.000 0.000 0.000
**************************************** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * **