HomeMy WebLinkAboutParcel Map No. 19491 Hydrology StudyHYDROLOGY c"'UDY
AND
HYDRAULICS CALCULATIONS
FOR
PARCEL MAP 19491
9113 LYTLE CREEK ROAD, FONTANA, CA. 92336
APN: 0226-161-10
MCN 13-064, TPM 13-007
PREPARED BY:
HP ENGINEERING, INC
1465 CRESTVIEW ROAD
REDLANDS, CA. 92374
(909) 799-6797
Email: hcpoquiz@aol.com
INTRODUCTION
STUDY LOCATION:
The study area is consists of approximately 0.75 acres of vacant land being surrounded
by single family residential homes on the north, west and on the south sides. It is located
at the southeast east corner of Curtis Avenue and Lytle Creek Road. The project may be
accessed via Citrus Avenue going north from Interstate 210 freeway, then west into
Curtis Avenue to the project site
REPORT OBJECTIVE:
The entire area of this project will have 3 single family residential buildings and
landscaping. The objective of this report is to determine the basic hydrologic response of
the proposed development to both onsite and offsite storm runoff and to established storm
drain facility design criteria for this localized unit for review by the City of Fontana. The
project is an "infill" in nature.
HYDROLOGY:
The rational method hydrology system used on the analysis of the subject site is the San
Bernardino County Hydrology Manual dated August, 1986
SUMMARY:
The project study area is a corner lot and less than an acre (0.75 ac.), so small that a
simple Rational Method Formula, i.e., Q=CIA can be used to determined the flow in 100-
year frequency. The properties to the north, west, and south sides of the project are
existing single family residential with fully improved drainage system, therefore these
properties will not have significant impact to the project. The property to the east is a
vacant lot that drains to the south, and it won't have significant impact to the project. The
runoff generated by this development (on -site flow) therefore will only be used for sizing
of under -sidewalk drain.
Applying the formula: Q=CIA , C=0.80, I=1.55 (100-yr.), A=0.75 Ac.
I=1.23 (25-yr.)
I=1.05 (10-yr.)
Q(100) = 0.93 CFS
Q(25) = 0.74 CFS
Q(10) = 0.63 CFS
An under sidewalk drain 1.5 feet wide can easily support the 100-year flow, (see
hydraulic calculation below.
1< ( 1.50') >I
* * * * * * * * * *
* * * *
* *AAAWater Surface ( 0.15')AAA*
* * * *
* * * *
* * * *
* * * * * * * * * * * * * * * * * *
* * * * * * * * * * * * * * * * * *
Rectangular Open Channel
UNDERSIDEWALK DRAIN
Flowrate 0.930 CFS
Velocity 4.082 fps
Depth of Flow 0.153 feet
Critical Depth 0.229 feet
Total Depth 0.153 feet
Base Width 1.500 feet
Slope of Channel 2.000 %
X-Sectional Area 0.229 sq. ft.
Wetted Perimeter 1.805 feet
AR^(2/3) 0.058
Mannings 'n' 0.013
SUMMIT AVE.
CURTIS AVE.
W
Lu
W
ti
0
COOPER AVE.
CITRUS AVE.
SITE
HIGHLAND
VICINITY
MAP
N.T.S.
N00'09'00 E
LYTLE CREEK ROAD \;
alwEamER
u£
LX. WOO /"
„ affiBAUTTER PER S1AEn PLAN
ti
CENTERLINE
4.4
/
MAW OF WAY 95.09„>
VI
24.5'
f
�J1% SWALE YIN. %•`�`
D
n
m
r
1% SWALL YM. .
118.00' t
24.5'
N2'
22'
I% SWALE YIN.
�fyl�
/J
f
0
r
•
11
•
1% SWALE 11IN.
34'
1
S.
0
24.5'
1% SWALE YR1.
i
33
n
m
r
CA%
r 1% SWALE YM.
118.00'
16.
118.00'
8
1r
C)
C
co
rn�
25'
3NI7d31N3J
T4N.
i 'W I .
— —r -1-
I I _ I.R W I 1'.-., :.R6W i R
i I 1
/
1
•4W _
I I'!'
R24�t- r--Y Y RI �:'�,
� R2E+
,:t -1- ' -+ - •
I -1 �
1= tom+ � 1111W,r •
_
.mbew p
-1 •01-lam.,
L _ L1
•
�
: :.1
•
.mmit
I
try
•
��
1
7" - I
_..J
j�� -I-- r -• - I- *
LO
� _ -, i -y
4 .
�---L.-.
LII*!
/I
r • I i
+I
!• :
I.. .1 RI Ni
I 1 I I /
;
`:•�I
!
ELT
J _ i___'�c
_
_ iL.r
.
110161,.!
\ 1
-hs -, �- -j \ ..w.
. _I...
+ +
'}T.,
riP
�iA
- -
T2N
_. �-- '-�IA _ L: -
I
— - ——r^,Z.
� A-}. <,��
!t7=
�4.
A
I
•!i.z , r- Lj11--
4J I•- I T
LI , 'is. •n.-'
it `-'� _
, I.
pI-r��2o.�l�i`�.'1�
L.r10101.1)
a ••
z`_ y� 17LRi�TS\ ►
4 :pxe1•7}���i
ey •�.e _ _
.�.Y: .. �i11W�\
FINNtr-"r3F
�•
{
'-•mil
ma" `•
-L----�
I 7 -
.. -✓ -
_
1"tal
•.%
�h.
I'T MO,
r --
`w -NqT N.
,�-�1i
'lu
�L-
= -
-I- - - -
-� -:� , 1
•_
l•' '�
' �\ f
'
J,.,L n.i.,s L
.. .. \
.
.
r • ' 70 r
-.i-Lo-•.
r
Aso•
�5�' • �`1
I� t`
' _/
t rt f•`
a
r
1-r :TIN
T "-om
* -
�r - iiti
-
_�
/�
r���LiI
��/'AUW,
��
__ _a'
--io• ti 1 • 1-3 r
r • 7., -
- -•
�
limfNI
7`
_.__�TLiIL�!
�i
_
TIS
—
.ai 3
4=1�i
ONT
. !0 '•
a•'
�.
u.IL�IME`�'
killya�7'�{'.—•I_--rmil
�i�
_ - - ...
_-
,
-. ... •_ _ _ .1S
• -- •
.402
.7.•
....01
i
' 3
s �.
•
R4W
I
R3 ' /
R2W \
RI
I
—
`�
I- t —1-I- r'
•;'+',,-
-
FDECNTOL YT
FLOOD DISTRICT
1--1,..
T3S—
A
! _'- --I- 1
I I I
- •— —
•
=' '
-
•�•�- 5
:=
` '"
R5W
REDUCED DRAWING
SCALE I.2._4 MILES
VALLEY AREA
. =- !YEAR Ls
YEAR
"Yroa¢o :1
•M1$
-t'.-! .I
r
'• 4 •�
-}
to
SAN BERNARDINO COUNTY
OH'2OI.SYDG L4{sD2u 3
-
; f•Rew 1 I
- R7W - :o
• - J•
.R. HYDROLOGY MANUAL LEOENOI . = •
� FLoo rr L�9€;feA6ke -
• ••••• •••••••'•••••••• - =LINES PRECIPITATION(INCHES)
CO,\\JJ
oae -scam. '
I962 t•t111'
FIE NO
Wxod
Imo K.
3 a 12
I
TIN —
1.
:n
R8
4-
i
rt---1--r--,
1.s
RTW
R6W
I 1 " j
:41tommr,
i.
TIS
T
4. 1
4W . 1„1.,
r
���_ . IMMATIMIDMIN
�• ,lPr.ioFi/E NI14weaw
�COLTON
, w
T2S
a
i_
iir Wig RaillElaws amalm
Arillirpregw,
A0-7EVONNIII hew 41,
slots!,!........,
•itacs a
T3S — - ;
•— •3.=1
8
pp- A
�•vfH•, `_ ��
)
w-
ERS IDE
R4W
111
R2W
r
a
.T
a
i
I..
ivy .i CWIR ".f�
\ 1, — 1 ,Z
R3
SAN BERNARDINO COUNTY
HYDROLOGY MANUAL
R2W
REDUCED DRAWING .
SCALE I". 4 MILES
LANS
. 1.
_a.A_�.�..
I4
a a
LEGEND.
. 00 'SOURER PRECIPITATION .INCHES.
R
•
-
R2E
-1
fi
I
o ry
T551150
w vT? N
-
1 ?—
I \:
—r 1--.
0
„
VS
R2
SAN DERNARDINO COUNTY
FLOOD CONTROL DISTRICT'
VALLEY AREA
ISONYETALS
Ya.-100 YEAR I'HOUR
Y.[D D! U..DC. MYAAgLA... Af. •
7471104.0 .Y
fll
DIRE .a !p ..s es.a Iq.
I552 I11G1M1.1a -MID-1 .4 .1111
..a.aa.dNo.
R—I9
FIGURE B-4
3.5
0.5
0
3.5
- 3
NMI
2
2.5
2
0.5
.0
5 10 25 50 100
RETURN PERIOD IN YEARS
NOTE'
I. FOR INTERMEDIATE RETURN PERIODS PLOT 10-YEAR AND 100-YEAR ONE HOUR VALUES FROM MAPS,
THEN CONNECT POINTS AND READ VALUE FOR DESIRED RETURN PERIL FOR EXAMPLE GIVEN 10-YEAR
ONE HOUR• 0.95' AND 100-YEAR CNE HOUR s 1.60', 25-YEAR ONE HOUR s I.IS'.
REFERENCE $NOAA ATLAS 2, VOLUME-CAL.,1973
SAN BERNARDINO COUNTY
HYDROLOGY MANUAL
RAINFALL DEPTH VERSUS
RETURN PERIOD FOR
PARTIAL DURATION SERIES
D-7 FIGURE D-2
rr
lin
rill j Sri zIkPihii
SAN BERNARDINO COUNTY
HYDROLOGY MANUAL
C-I
.
C-2
J1
1 SAN
BERN4RD
W0 COUNTY Y
Lf
C-T C-O,
C-B
O-4
so, GROUP BOUNDARY
A SDI, GROUP OESICN0M1ON
—..�-�BOWIOARY OE INDICATED SOURCE
YV t SOME I7000
SCALE REDUCED BY 1/2
HYDROLOGIC SOILS GROUP MAP
FOR
SOUTHWEST —A AREA
INDEX NAP