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HomeMy WebLinkAboutAppendix A APPENDIX "A ": SAN SEVAINE HYDROLOGY STUDY EXCERPT DEPARTMENT OF PUBLIC WORKS COUNTY OF SAN BERNARDINO i = ECONOMIC DEVELOPMENT FLOOD CONTROL • GIMS • REGIONAL PARKS • SURVEYOR • TRANSPORTATION • WASTE SYSTEM AND PUBLIC SERVICES GROUP .Si Third Street -San Bernardino, CA 92415 -0835 - (909) 3874104 KEN A. MILLER Fax (909) 387 -8130 Director of Public Works October 16,2002 -- ' — `u? AEI -CASC ENGINEERING 937 S. Via Lata, Suite 500 File: 108.0108 - Colton, CA 92324 1-807/1.00 Attn: Ceazar V. Aguilar, P.E., Principal • RE: ZONE 1 - COYOTE CANYON HYDROLOGY - BOYLE'S SUBAREAS 3 & 4 REVISION Dear Ceazar, Reference is made to yom letter of transmittal dated August 29, 2002, with the City of Fontana (Alternative 4) Land Use Map dated May 1999, requesting recalculation of Boyle Engineering's hydrology for Sub -areas 3 & 4 to reflect the City's Land Use Map. Attached, please find Boyle Engineering's revised hydrology calculations for Sub -areas 3 & 4_ Please note, San Sevaine Channel has already been designed and in many areas constructed based on the previously approved. study by Boyle Engineering. Therefore; the revision has to be accommodated within Rich Basin. In other words, the outflow from Rich Basin should not exceed 3,994 c-fs. If you hav .. y questions, please call Hany Peters or me at (909) 387-8213. Sincer= • 1 1 : • _ J. FOX '.E., Chief • Water Resources Division -NA F_T-- P:RT.S:bf !!)18538 Attachments: as noted above. • RATIONAL METHOD HYDROLOGY COMPU!'ER PROGRAM PACKAGE (Reference: 1986 SALT BERNARDINO CO. H=YDROLOGY CRITERION) (c) Copyright 1983 -2001 Advanced Engineering Software (aes) Ver. 8.0 Release Date: 01/01/2001 License ID 1224 Analysis prepared by: SAN BERNARDINO COUNTY TRANSPORTATION / FLOOD CONTROL DEPARTMENT -- ---- - - - - - -- - - - - - - WATER RESOURCES DIVISION * * * * * * * * * ** * * * * * * * * * * * * * ** DESCRIPTION OF STUDY * * * * * * * * * * * * * * * * * * * * * * * * ** * San Sevaine Channel Hydrology- Ultimate Conditions * 100 yr Return Frequency * * Revised Elevations and Land Us -e per City's Alternative 4 Land Use ******************************************* * * * * * * * * * * * * * * * * * ** * * * * * * * * * * ** FILE NAME: A: \SSO3R.DAT .TIME /DATE OF STUDY: 09:01 10/15/2002 USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: -- *TIME -OF- CONCENTRATION MODEL*- - ,ER SPECIFIED STORM EVENT (YEAR) = 100.00 ?ECIFIED MINIMUM PIPE SIZE (INCH) = 18.00 c SPECIFIED PERCENT OF GRADIENTS (DECIMAL) TO USE FOR FRICTION SLOPE = 0.95 • *USER - DEFINED LOGARITHMIC INTERPOLATION USED FOR RAINFALL* SLOPE OF INTENSITY DURATION CURVE (LOG (I ; IN %HR) vs. LOG (Tc; MIN)) = 0.6000 USER SPECIFIED 1 -HOUR INTENSITY (INCH /HOUR) = 1.5600 *ANTECEDENT MOISTURE CONDITION (AMC) II ASSUMED FOR RATIONAL METHOD* UNIT - HYDROGRAPH MODEL SELECTIONS /PARAMETERS: WATERSHED LAG = 0.80 * Tc FOOTHILL S -GRAPH USED. PRECIPITATION DATA ENTERED ON SUBAREA BASIS. SIERRA MADRE DEPTH -AREA FACTORS USED. *ANTECEDENT MOISTURE CONDITION (AMC) III ASSUMED FOR UNIT HYDROGRAPH METHOD * ******************************** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * * * *. * * ** FLOW PROCESS FROM NODE 310.00 TO NODE 311.00 IS CODE =. 21 » » >PATIONAL METHOD INITIAL SUBAREA ANALYSIS « «< »USE TIME-OF-CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA« ITIAL SUBAREA FLOW - LENGTH (FEET) = 844 .40 , EVATI ON DATA: UPSTREAM(FEET) = 2000.00 DOWNSTREAM (FEET) = 1611.58 To = K* [ (LENGTH * * 3.00)/(ELEVATION CHANGE) ] * * 0 . 2 0 SUBAREA ANALYSIS USED MINIMUM Tc (MIN.) = 12.214 * 100 YEAR RAINFALL IN (INCH/HR.) = 4.054 SLT✓AREA Tc AND LOSS RATE DATA (AMC II): : r' ^11TT 7.7)777% LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN (MIN.) a TURAL FAIR COVER 'NADOWS" B 10.98 0.55 1.00 70 12.21 zUBAREA AVERAGE PERVIOUS LOSS RATE, Fp (INCH /H.R) = 0.55 SDEAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 1.00 S_T AREA RUNOFF(CFS) = 34.64 . TOTAL AREA(ACRES) = 10.98 PEAK FLOW RATE (CFS) = 34.64 SUBAREA AREA - AVERAGED RAINFALL DEPT Fi (INCH) : 5M = 0.61; 30M = 1.25; 1HR = 1.65; 3HR = 3.45; 6HR = 5.50; 24R. =13.49 • - x- E- 7c- x x ycycx-- xae**.mac.crn*_**_***** * * ** *** * * * * ** ** * * * * * *k * * **r.* FLOW PROCESS FROM NODE 311.00 TO NODE 312.00 IS CODE = 51 » »COMPUTE TRAPEZOIDAL CHANNEL FLOW««< » »>TRAVELTIME THRU SUBAREA (EXISTING ELEMENT) « «< ELEVATION DATA: UPSTREAM (FEET) = 1611.58 DOWNSTREAM (FEET) = 1454.32 CHANNEL LENGTH THRU SUBAREA(FEET) = 851.90 CHANNEL SLOPE = 0.1846 • CHANNEL BASE(FEET) = 4.00 "Z" FACTOR = 2.000 MANNING'S FACTOR = 0.022 MAXIMUM DEPTH(FEET) = 30.00 .- CHANNEL FLOW THRU SUBAREA(CFS) = 34.64 FLOW VELOCITY (FEET /SEC) = 15.21 FLOW DEPTH(FEET) = 0.46 TRAVEL TIME (MIN.) = 0.93 Tc(MIN.) = 13.15 LONGEST FLOWPATH FROM NODE 310.00 TO NODE 312.00 = 1696.30 FEET. LOW PROCESS FROM NODE 312.00 TO NODE 312.00 IS CODE = 81 » »ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< MAINLINE Tc (MIN) = 13.15 * 100 YEAR RAINFALL TNTE.N.SITY (INCH /RR) = SUBAREA LOSS RATE DATA (AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN NATURAL FAIR COVER "MEADOWS" B 10.62 0.55 1.00 70 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp (INCH /HR) = 0.55 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 1.00 - SUBAREA AREA(ACRES) = 10.62 SUBAREA RUNOFF(CFS) = 31.83 EFFECTIVE AREA(ACRES) = 21.61 AREA - AVERAGED Fm(INCH /HR) = 0.55 AREA- AVERAGED Fp(INCH /HR) = 0.55 AREA- AVERAGED Ap = 1.00 TOTAL AREA(ACRES) = 21.61 PEAK FLOW RATE(CFS) = 64.73 • SUBAREA AREA - AVERAGED RAINFALL DEPTH(INCH): 5M = 0.61; 30M = 1.25; 1HR = 1.65; 3HR = 3.45; 6HR = 5.50; 24HR =13.00 - ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 312:00 TO NODE 313.00 1S CODE = 51 »COMPUTE TRAPEZOIDAL CHANNEL FLOW « «< > »>TRAVELTIME THRU SUBAREA (EXISTING ELEMENT) « «< ELEVATION DATA: UPSTREAM (FEET) = 1454.32 DOWNSTREAM (FEET) = 1305.68 CHANNEL LENGTH THRU SUBAREA (FEET) = 650.20 CHANEEL SLOPE = 0.2286 CHA.NN EL BASE(FEET) = 4.00 " Z " FACTOR = 2 . 0 0 0 MANNING'S FACTOR = 0.022 MAXTM[7M DEPTH (FEET) = 3 0 _ 00 CH =EL FLOW THRU r. T E (CF �.r_-- ��T?��� F�vvv i nRv S �t3nn�z �� r S l = 64.73 - - RAVEL TLYE (MIN .) = 0. 55 Tc (MIN_) = 13.70 NGEST FLOWPATH FROM NODE 310.00 TO NODE 313.00 = 2346.50 FEET. . * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * FLOW PROCESS FROM NODE 313.00 TO NODE 313.00 IS CODE = 81 » »>ADDITION OF SU 3i AREA TO MAINLINE PEAK FLOW««< MAINLINE Tc(MIN) = 13.70 - * 100 YEAR RAINFALL INTENSITY ( INCH /HR) = 3.785 SUBAREA LOSS RATE DATA (AMC 1 1 ) : DEVELOPMENT TYPE SCS -- SOTL - AREA - �p Spa LAND USE GROUP (ACRES) (INCH /HR) (DECIMiAL) CN NATURAL FAIR COVER "MEADOWS" B 22.76 0.55 1.00 70 • SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.55 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 1.00 SUBAREA AREA (ACRES) = 22.76 SUBAREA RUNOFF (CFS) = 66.27 EFFECTIVE AREA(ACRES) = 44.37 AREA- AVERAGED Fm(INCH /HR) = 0.55 AREA- AVERAGED Fp(INCH /HR) = 0.55 AREA- AVERAGED Ap = 1.00 TOTAL AREA(ACRES) = 44.37 PEAK FLOW RATE(CFS) = 129.18 SUBAREA AREA- AVERAGED RAINFALL DEPTH (INCH): 5M = 0.61; 30M = 1.25; 1HR = 1.65; 3HR = 3.45; 6HR = 5.50; 24HR =13.00 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** OW PROCESS FROM NODE 313.00 TO NODE 314.00 IS CODE = 51 » »COMPUTE TRAPEZOIDAL CHANNEL FLOW « «< » »>TRAVELTIME THRU SUBAREA (EXISTING ELEMENT) « «< ELEVATION DATA: UPSTREAM (FEET) = 1305.68 DOWNSTREAM (FEET) = 1240.04 C A NEL L THRIT cLBaREA (FRET) = 547.00 CHANNEL . SLOPE = n. 1200 CHANNEL BASE(FEET) = 7.00 "Z" FACTOR = 4.000 MANNING'S FACTOR = 0.022 MAXIMUM DEPTH(FEET) = 30.00 CHANNEL FLOW THRU SUBAREA (CFS) = 129_18 FLOW VELOCITY(FEET /SEC) = 16.34 FLOW DEPTH(FEET) = 0.78 TRAVEL TIME (MIN.) = 0.56 Tc(MIN.) = 14.25 LONGEST FLOWPATH FROM NODE 310.00 TO NODE 314.00 = 2893.50 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 314.00 TO NODE 314.00 IS CODE = 81 » »>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< MAINLINE Tc(MIN) = 14.25 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.695 SUBAREA LOSS RATE DATA (AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /till) (DECIMAL) CN NATURAL FAIR COVER MADOWS" B 36.22 0.55 1.00 70 BAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = 0.55 JBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 1.00 ,uBAREA AREA(ACRES) = 36.22 SUBAREA R"tJNOFF(CFS) = 102.53 EFFECTIVE AREA(ACRES) = 80.59 AREA- AVERAGED Fm(INCH/H) = 0.55 AREA- AVERAGED Fp(INCH/HR) = 0.55 ARR A- AVERAGED Ap = 1.00 TOTAL AREA(ACRES) = 80.59 PEAK FLOW RATE(CFS) = 228.14 _M = 0.60; 30M = 1.23; 1HR = 1.63; 33 = 3.43; 6HIR = 5.50; 24HR =13.00 FLOW PROCESS FROM NODE 314.00 TO NODE 315.00 IS CODE = 51 » »>COMPtJT E TRAPEZOIDAL CHANNEL EL FLOW« «< » » >TRAVELTIME THRU SUBAREA (EXISTING ELEMENT) ««< ELEVATION DATA: UPSTREAM (FEET) = 1240.04 DOWNSTREAM(FEET) = 1063.51 CHANNEL LENGTH THRU SUBAREA(FEET) = 1562.20 CHANNEL SLOPE = 0.1130 CHANNEL BASE(FEET) = 9.00 "Z" FACTOR = 5.000 ------- M ANNING' S- FACTOR = - 0 . 02 - 2 - M I EE DEP -C. T) _ - 3-0 . G0 CHANNEL FLOW THRU SUBAREA(CFS) = 228.14 FLOW VELOCITY(FEET/SEC) = 17.83 FLOW DEPTH(FEET) = 0.94 TRAVEL TIME(MIN.) = 1.46 Tc(MIN.) = 15.71 LONGEST FLOWPATH FROM NODE 310.00 TO NODE 31 = 4455.70 FEET. FLOW PROCESS FROM NODE 315.00 TO NODE 315.00 IS CODE = 81 » » >ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< MAINLINE Tc (MIN) = 15.71 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.485 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN ATUR.AL FAIR COVER MEADOWS" B 37.85 0.55 1.00 70 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp (INCH /HR) = 0.55 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 1.00 SUBAREA AREA(ACRES) = 37.85 SUBAREA RUNOFF(CFS) = 100.00 J EFFECTIVE AREA ( ACRES) = 118.44 AREA - AVERAGED Fm (INCH /H ) = n 5 5 Jl 1 1J \..11 V L \ \ AREA l � 11 l� 1 \/ - V J AREA- AVERAGED Fp(INCH /HR) = 0.55 AREA- AVERAGED Ap = 1.00 TOTAL AREA(ACRES) = 118.44 PEAK FLOW RATE(CFS) = 312.89 SUBAREA AREA - AVERAGED RAINFALL DEPTH(INCH): 5M = 0.57; 30M = 1.18; 1HR = 1.55; 3HR = 3.25; 6HR = 5.18; 24HR =13.00 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 315.00 TO NODE 309.00 IS CODE = 51 »> »COMPUTE TRAPEZOIDAL CHANNEL FLOW ««< » » >TRAVELTIME THRU SUBAREA (EXISTING ELEMENT) « «< ELEVATION DATA: UPSTREAM (FEET) = 1063.51 DOWNSTREAM (FEET) = 801.54 CHANNEL LENGTH THRU SUBAREA(FEET) = 2318.30 CHANNEL SLOPE = 0.1130 CHANNEL BASE(FEET) = 9.00 "Z" FACTOR = 5.000 MANNING'S FACTOR = 0.022 MAXIMUM DEPTH(FEET) = 30.00 CHANNEL FLOW maU SUBAREA (CFS) = 312.89 FLOW VELOCITY(FEET/SEC) = 19.39 FLOW DEPTH(FEET) = 1.11 'AFL TIME(MIN.) = • 1.99 Tc(MIN.) = 17.71 ,NGEST FLOWPATH FROM NODE 310.00 TO NODE 309.00 = 6774.00 FEET. - .,;******************************************* * * * * * * * * * * * * * * * * * * *** * * * * ** * ** - FLOW PROCESS FROM NODE 309.00 TO NODE 309:00 IS CODE = 1 » » >DE SIGNA 77 INDEPENDENT STREAM FOR m FT.T wNr1 « «< - " ONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: =NE OF CONCEN'±± ATION (MIN.) = 17.71 .AINFAL L INTENSITY (INCH /PR) = 3.24 AREA- AVERAGED Fm (INCH /z-32) = 0.55 AREA- AVERAGED Fp (INCH /HR) = 0.55 AREA- AVERAGED Ap = 1.00 EFFECTIVE STREAM AREA (ACRE'S) = 118.44 TOTAL, STREAM AREA (ACRES) = 118.44 - PEAK FLOW RATE (CFS) AT CONFLUENCE = 312.89 - - FLOW - PR - OCE - S S FROM 3 - : - 0 - 0 TO NODE 302.00 I S -- C-OI _ 21 - - - - - »»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS ««< »USE TIME -OF- CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA« INITIAL SUBAREA FLOW-LENGTH(FEET) = 601.00 ELEVATION DATA: UPSTREAM(FEET) = 2000.00 DOWNSTREAM(FEET) = 1759.60 Tc = K* C (LENGTH ** 3.00)/(ELEVATION CHANGE) ] * * 0 .20 SUBAREA ANALYSIS USED MINIMUM Tc (MIN.) = 10.963 100 YEAR RAINFALL INTENSITY(INCH/HR) = 4.326 SUBAREA Tc AND LOSS RATE DATA (AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS .Tc LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN (MIN.) NATURAL FAIR COVER EADOWS" B 4.45 0.55 1.00 70 10.96 JBAREA AVERAGE PERVIOUS LOSS RATE, Fp (INCH /HR) = 0.55 UBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 1.00 SUBAREA RUNOFF (CFS) = 15 .13 TOTAL AREA (ACRES) = 4.45 PEAK FLOW RA1'E (CFS) = 15.13 SUBAREA R n -A - PFA G - E D RATNFPT.T. DEPTH(INCH) : 5M = 0:51,; 30M = 1.25; 1HR = 1.65; 3HR = 3.'45; 6HR = 5.50; 24HR =13.00 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 302.00 TO NODE 303.00 IS CODE = 51 » »>COMPUTE TRAPEZOIDAL CHANNEL FLOW « «< » »>TRAVELTIME THRU SUBAREA (EXISTING ELEMENT) « «< ELEVATION DATA: UPSTREAM(FEET) = 1759.60 DOWNSTREAM(FEET) = 1604.03 CHANNEL LENGTH THRU SUBAREA (FEET) = 583.30 CHANNEL SLOPE = 0.2667 CHANNEL BASE (FEET) = 5.00 " Z " FACTOR = 4.000 MANNING' S FACTOR = 0.022 MAXIMUM DEPTH(FEET) 30.00 CHANNEL FLOW THRU SUBAREA(CFS) = 15.13 FLOW VELOCITY (FEET /SEC) = 11.45 FLOW DEPTH(FEET) = 0.22 TRAVEL TIME (MIN.) = 0.85 Tc(MIN.) = 11.81 LONGEST FL.OWPATH FROM NODE 301.00 TO NODE 303.00 = 1184.30 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** OW PROCESS FROM NODE 303.00 TO NODE 303.00 IS CODE = 81 » »ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« A INLINE Tc(MIN) = 11.81 - * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 4.136 S BAR�.A LO.S.S RATE. DATA (AMCV TT) V 77TTr'- OPMETT'' TYPE/ SCS SOIL AREA p T_3D. S03 - AT tJRAL FAIR COVER IADOWS " • B 6.46 0. 5 5 1.00 70 - .J. R E_A AVERAGE PERVIOUS LOSS RATE, Fp (INCH /HR) = 0.55 .� 0BAREA AVERAGE PERVIOUS APT- FRACTION, Ap = 1.00 SUBAREA AREA (ACRES) = 6.46 SUBAREA RUNOFF (CFS) = 20.85 EFFECTIVE AREA (ACRES) = - 10 . S 1 AREA - AVERAGED Fm (INCH /l R) = 0.55 AREA- AVERAGED Fp (INCH / HR) = 0.55 AREA -A v ERAGED Ap = 1.00 TOTAL AREA (ACRES) = 10.91 PEAK FLOW RATE (CFS) = 35.23 SUBAREA AREA - AVERAGED RAINFALL DEPTH (INCH) : • 5M = 0.61; 30M = 1.25; 1HR = 1.65; 3HR = 3.45; 6HR = 5.50; 24HR =13.00 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 303.00 TO NODE 304.00 IS CODE = 51 » »> COMPUTE TRAPEZOIDAL CHANNEL FLOW « «< » >TRAVELTIME THRU SUBAREA (EXISTING ELEMENT) ««< ELEVATION DATA: UPSTREAM(FEET) = 1604.03 DOWNSTREAM(FEET) = 1438.30 - CHANNEL LENGTH THRU SUBAREA (FEET) = 621.40 CHANNEL SLOPE = 0.2667 CHANNEL BASE (FEET) = 5.00 " Z " FACTOR = 4.000 -- MANNING'S FACTOR = 0.022 MAXIMUM DEPTH(FEET) = 30.00 CHANNEL FLOW TI-aU SUBAREA (CFS) = 35.23 FLOW VELOCITY(FEET/SEC) = 15.42 FLOW DEPTH(FEET) = 0.36 TRAVEL TIME (MIN.) = 0.67 Tc(MIN.) = 12.48 T FLOWPATH FROM NODE 301.00 TO NODE 304.00 = 1805.70 FEET. :***************************************** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** _1OW PROCESS FROM NODE 304.00 TO NODE 304.00 IS CODE = 81 » »»ADDITION OF SUBAREA TO MAINLINE PEAK FLOW « «< MAINLINE Tc(MIN) = 12.48 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 4.001 SUBAREA LOSS RATE DATA (AMC II) : DEVELOPMENT 'TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN NATURAL FAIR COVER "MEADOWS" B 10.41 0.55 1.00 70 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp (INCH /HR) = 0.55 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 1.00 SUBAREA AREA (ACRES) = 10.41 SUBAREA RUNOFF (CFS) = 32.33 EFFECTIVE AREA (ACRES) = 21.32 AREA- AVERAGED Fm (INCH /HR) = 0.55 AREA - AVERAGED Fp (INCH /I-) = 0.55 AREA- AVERAGED Ap = 1.00 TOTAL AREA (ACRES) = 21.32 PEAK FLOW RATE(CFS) = 66.23 SUBAREA AREA- AVERAGED RAINFALL DEPTH (INCH) : 5M = 0.61; 30M = 1.25; 1HR = 1.65; 3HR = 3.45; 6ER = 5.50; 24HR =13.00 **************************'***************** * * * * * * * * * * * * * * * * * * * * **yc****** *** FLOW PROCESS FROM NODE 304.00 TO NODE 305.00 IS CODE = 51 » »COMPUTE TRAPEZOIDAL CHANNEL FLOW< > » >TRAVELTIME THRU SUBAREA (EXISTING ELEMENT) ««< ELEVATION DATA: UPSTREAM(FEET) = 1438.30 DOWNSTREAM(FEET) = 1283.52 CHANNEL LENGTH TraU SUBAREA (FEET) = 1062.30 C HANNEL SLOPE = 0.1457_ O4 A EL = 5 .(-)r) ", Z' FACTOR = 4.000 RrT?NT?- ?T?v(: i 2 cTCP c 0_022 MAXIMO vI D - YTH 1 FET = n 0 0 1]il tvl l :J L�_ 1_7 \ t 1 / � V V'J - _,OW VELOCITY(FEET /SEC) = 14.98 FLOW DEPTH(FEET) = 0.60 :RAVEL T +_ (M;N,) = 1.18 Tc(MIN.) = 13.67 _ONGE S'T y FLOWPATH FROM NODE 301.00 TO NODE 305.00 = 2868.00 FEET . * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * FLOW PROCESS FROM NODE 305.00 TO NODE 305.00 IS CODE = 81 » » >ADDITION OF SUBAREA TO MAINLINE PEAK FLOW « «< MAINLINE Tc(MIN) = 13.67 • _. * 1-0.0 _YEAR -- RAINFALL- __INTENS ITY ( INCH /HR) =_,3.790 SUBAREA LOSS RATE DATA (AMC I I) : - DE BOPMEN EA - - -SC- SAO -1-L- AREA -F_p- -- -Ap_- ---SCS- LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN NATURAL FAIR COVER "MEADOWS" B 60.62 0.55 1.00 70 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.55 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 1.00 SUBAREA AREA(ACRES) = 60.62 - SUBAREA RUNOFF(CFS) = 176.77 EFFECTIVE AREA (ACRES) = 81.94 AREA- AVERAGED Fm (INCH /HR) = 0.55 AREA- AVERAGED Fp(INCH /HR) = 0.55 AREA- AVERAGED Ap = 1.00 -TOTAL AREA(ACRES) = 81.94 PEAK FLOW RATE(CFS) = 238.94 SUBAREA AREA - AVERAGED RAINFALL DEPTH(INCH): 5M = 0.58; 30M = 1.18; 1HR = 1.56; 3HR = 3.38; 6HR = 5.50; 24HR =13.00 k * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * LOW PROCESS FROM NODE 305.00 TO NODE 306.00 IS CODE = 51 • » »>COMPUTE TRAPEZOIDAL CHANNEL FLOW « «< _✓ [� �m THRCr SUBAREA ( I i TTTG EL -- � � t > > > > >1y{.r >V L'+L111�1rJ 1t12iU JUDl- 1LLLt] �1:+X1S 11 . ELEVATION DATA: UPSTREAM (FEET) = 1283.52 DOWNSTREAM (FEET) = 1183.40 CHANNEL LENGTH THRU SUBAREA(FEET) = 1356.70 CHANNEL SLOPE = 0.0738 CHANNEL BASE(FEET) = 10.00 "Z" FACTOR = 5.000 MANNING'S FACTOR = 0.021 MAXIMUM DEPTH(FEET) = 30.00 CHANNEL FLOW THRU SUBAREA (CFS) = 238.94 FLOW VELOCITY(FEET /SEC) = 15.84 FLOW DEPTH(FEET) = 1.00 TRAVEL TIME (MIN.) = 1.43 Tc(MIN.) = 15.09 LONGEST FLOWPATH FROM NODE 301.00 TO NODE 306.00 = 4224.70 FEET. ********`************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS iROM NODE 306.00 TO NODE 306.00 IS CODE = 81 » » >ADDITION OF SUBAREA TO MAINLINE PEAK FLOW « «< MAINLINE Tc(MIN) = 15.09 • * 100 YEAR RAINFALL INTENSITY {INCH /HR) = 3.571 SUBAREA LOSS RATE DATA (AMC I I) : DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN .TURAL FAIR COVER MEADOWS" A 2.78 0.81 1.00 51 A ATDR.AL FAIR COVER "MEADOWS" 3 16.21 0.55 1.00 70 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp (INC /) - = 0.59 AVERAGE Su�ARr,A -_ PEtPERVIOUS 1�RE A ±� RACTION, Ap 1.00 _ 51.00 SUBAREA AREA(ACRES) = 13.00 S EAREA RUNOFF(CFS) = - -.--„�,- .,r- -�,,, Tn =7\ -rTi-*��c�∎ _ -t nn QA A:.FA- L�Zi7RA2 D - (INC = _T ) = ., T_ziL ARr.A(ACRES) = 100.94 PEAK FLOW RATE (CFS) = 273.76 UBAP A_ A.R A-AtiEPAGED RAINFALL D 4,i TH (1 NCL) : .17; 1 R = 1.55; 0-5 = 3.15; 6T_T. = 4.94; 24~R =13.00 5M = 0.57; 30M = - , **************** ************************* ** * xx ,**** * * * * ** ** ** * * * * * * ** * * * ** FLOW PROCESS FROM NODE 306.00 TO NODE 307.00 IS CODE = 51 » » >COMPUTE TRAPEZOIDAM CHANNEL FLOW « «< »»> TR,AVEL.TIME THRU SUBAREA (EXISTING ELEMENT) ««< = 1 1 8 3 . 4 0 DOWNSTREAM (FEET) --- - I-- - -- -- ELEVATION DATA: UPSTREAM (FEET) -, _ _ T - - - CH �Eid�'�rI THRU �T7$- SUB - 1- ( F'RET� =- 1-74- 8 .- 8- 0- ..._- CINANI�TEL._ __SL OTy - - - -= - - � • 0275 - CHANNEL BASE (FEET) = 10.00 "Z" FACTOR = 5.000 MANNING'S FACTOR = 0.021 IMUM DEPTH(FEET) 30.00 CHANNEL FLOW THRU SUBAREA (C= 273.76 FLOW VELOCITY (FEET /SEC) = 11.58 FLOW DEPTH(FEET) = 1.39 TRAVEL TIME(MIN.) = - 2.52 Tc(MIN.) = 17.61 • LONGEST FLOWPATH FROM NODE 301.00 TO NODE 307.00 = 5973.50 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** _ -FLOW PROCESS FROM NODE 307.00 TO NODE 307.00 IS CODE = 81 » »>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW « «< 1INLINE Tc(MIN) = 17.61 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.255 UBAREA LOSS RATE DATA (AMC II): Ap SCS DEVELOPMENT TYPE/ SCS SOIL AREA Fp LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN NATURAL FAIR COVER "MEADOWS" A 9.30 0.81 1.00 51 NATURAL FAIR COVER "MEADOWS" B 66.59 0.55 1.00 70 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp (INCH /FR) = 0.58 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 1.00 SUBAREA AREA(ACRES) = 75.89 SUBAREA RUNOFF(CFS) = 182.61 EFFECTIVE AREA(ACRES) = 176.83 AREA- AVERAGED Fm (INCH /HR) = 0.57 AREA- AVERAGED Fp(INCH /HR) = 0.57 AREA- AVERAGED.Ap = 1.00 =27 70 TOTAL AREA(ACRES) = 176.83 PEAK FLOW RATE(CFS) - SUBAREA AREA- AVERAGED RAINFALL DEPTH(INCH): 5M = 0.57; 30M = 1.17; 1HR = 1.55; 3HR = 3.13; 6FR = 4.87; 241-1R =13.00 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 307.00 TO NODE 308.00 IS CODE = 51 » » >COMPUTE TRAPEZOIDAL CHANNEL FLOW « » »>TR_z.VELT1ME THRU SUBAREA (EXISTING ELEMENT) «« < 7 7,EVATION DATA: THRUTSUBAR(EAE (FEET) = 111836,60DOWNS�NEL(SLOPE = 0.0248 /6 13ANNEL LENGTH 'HANNEL BASE (FEET) = 6.00 " Z " FACTOR = 1.500 AANNING' S FACTOR = 0.015 MLAXIMUM DEPTH(FEET) = 30.00 CHANNEL FLOW THRU SUBAR N•A (CFS) = 427.70 _ FLOW VELOCITY (FEET /SEC) = 20.40 FLOW DEPTH(FEET) = 2.24 . TRAVEL TIME(MIN.) = 1.50 _c (MIN.) = 19. � FROM NODE 301.00 TO NODE 308.00 = 7810.10 FEET T LONGEST FLOWPATH RO � NOJ ,OW PROCESS FROM NODE 308.00 TO NODE 308.00 I S CODE = 81 » »ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« MAINLINE Tc(MIN) = 19.11 * 100 YEAR RAINFALL INTENSITY (INCH /HRt) = 3.099 SUBAREA LOSS RATE DATA (AMC II): An SCS LAND D USE DEVELOPMENT TYPE/ SCS GROUP (ACRES) (INCH /RE) (DECIMAL) CN COMMERCIAL A 28.73 0.98 0.10 32 RESIDENTIAT _ -__ "2 DWELLINGS /ACRE" A 11.07 0.9 RESODENT±M - -- -- --- - - - "2 DWELLINGS /ACRE" B 2.92 0.75 0.70 56 NATURAL FAIR COVER "MEADOWS" A 0.54 0.81 1.00 51 NATURAL FAIR COVER "MEADOWS" B 20.46 0.55 1.00 70 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.70 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.53 SUBAREA AREA(ACRES) = 63.72 SUBAREA RUNOFF(CFS) = 156.52 .--EFFECTIVE AREA(ACRES) = 240.55 AREA- AVERAGED Fm (INCH /HR) = 0.52 AREA- AVERAGED Fp (INCH /HR) = 0.59 AREA- AVERAGED Ap = 0.88 TOTAL AREA(ACRES) = 240.55 PEAK FLOW RATE(CFS) = 559.41 • 7BAREA AREA- AVERAGED RAINFALL DEPTH (INCH) : A = 0.57; 30M = 1.17; 1HR = 1.55; 3HR = 3.08; 6HR = 4.75; 24HR =12.84 FLOW PROCESS FROM NODE 308 . 0 0 TO NODE 309.00 I S CODE = 51 » » >COMP I'E TRAPEZOIDAL CHANNEL FLOW ««< » »>TRAVELTIME THRU SUBAREA (EXISTING ELEMENT) ««< ELEVATION DATA: UPSTREAM (FEET) = 1089.76 DOWNSTREAM (FEET) = 1008.06 CHANNEL LENGTH THRU SUBAREA(FEET) = 3294.20 CHANNEL SLOPE = 0.0248 CHANNEL BASE (FEET) = 6.00 "Z" FACTOR = 1.500 MANNING'S FACTOR = 0.015 MAXIMUM DEPTH(FEET) = 30.00 CHANNEL FLOW THRU SUBAREA(CFS) = 559.41 FLOW VELOCITY (FEET /SEC) = 21.93 FLOW DEPTH (FEET) = 2.58 TRAVEL TIME (MIN.) = 2.50 Tc(MIN.) = 21.61 LONGEST FLOWPATH FROM NODE 301.00 TO NODE -- 309.00 = 11104.30 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 309.00 TO NODE 309.00 I S CODE = 81 » »> ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< MAINLINE Tc(MIN) = 21.61 * 100 YEAR RAINFALL INTENSITY (INCH /HR) = 2.879 gUBAREA LOSS RATE DATA (AMC II): .DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN _ONNERCIAL A 31.73 0.98 0.10 32 RESIDENTIAL "2 DWELLINGS /ACRE" A 59.60 0:98 0.70 32 RESIDENT IAL . y 0.75 0.70 56 "2 Di�`ELL %_`_C " E 5 . 6 Tm n'T D T T . :71 l'flU .R ThTURAL FAIR COVER i. 0 C 7 C .1EADOWS" B 63.62 0.55 - (3EAREA AVERAGE PERVIOUS LOSS RATE, Fp (INCH /HR) = 0.73 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.70 SUBAREA AREA(ACRES) = 16 SUEAREA RUNOFF (CFS) = 345.01 EFFECTIVE AREA(ACRES) = 402.45 AREA-AVERAGED Fm (INCH /HR) = 0.51 AREA- AVERAGED Fp (INCH /PHc) = 0.64 AREA- AVERAGED Ap = 0.81 856.64 TOTAL AREA(ACRES) = 402.45 PEAK FLOW RATE(CFS) = SUBAREA AREA-AVERAGED RAINFALL DEPTH (INCH) : 5M = 0.57; 30M = 1.17; 1HR = 1.55; 3HR = 3.09; 6HR = 4.79; 24%R =12.15 ** - * * _ * � tt _ ******* **** * * * * * * * * * * *** * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 309.00 TO NODE 309.00 IS CODE = 1 » » >DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE « «< » »AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 21.61 -- RAINFALL INTENSITY(INCH /HR) = 2.88 AREA- AVERAGED Fm(INCH /HR) = 0.51 AREA- AVERAGED Fp(INCH/HR) = 0.54 AREA- AVERAGED Ap = 0.81 T' STREAM AREA(ACRES) = 402.45 TAL STREAM AREA(ACRES) = 402.45 EAK FLOW RATE(CFS) AT CONFLUENCE = 856.64 ** CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH/HR) 1 \ / v" (CFS` IN ) /INCH / HR \ (INCH / RR) (ACRE_ S) NODE, l \ 1 312.89 17.71 3.245 0.55( 0.55) 1.00 118.4 310 2 856.64 21.61 2.879 0.64( 0.51) 0.81 402.5 301.00 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 1123.21 17.71 3.245 0.61( 0.52) 0.86 448.1 310.00 2 1127.04 21.61 2.879 0.61( 0.52) 0.85 520.9 301.00 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 1127.04 T c (MIN .) = 21.61 EFFECTIVE AREA(ACRES) = 520.89 AREA- AVERAGED Fm(INCH/HR) = 0.52 AREA - AVERAGED Fp(INCH /HR) = 0.61 AREA - AVERAGED Ap = 0.85 _ TOTAL AREA(ACRES) = 520.89 LONGEST FLOWPATH FROM NODE 301.00 TO NODE 309.00 = 11104.30 FEET. *- ***************************************** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** ,OW PROCESS FROM NODE 309.00 TO NODE 316.00 IS CODE = 51 » »COMPUTE TRAPEZOIDAL CHANNEL FLOW« » »>TRAVELTIME THRU SUBAREA (EXISTING ELEMENT) « «< ELEVATION DATA: UPSTREAM(FEET) = 10088_06 DOtNiNSTim AM = .. sRG.0 r7.711\TNT ..-, T,T.N ^T=? T=RRTJ SUBAPRA(FEET) = 1267.20 CHATTEL SLOPE = 0.0308 d ING' S FACTOR = 0.015 MAXIMUM DEPTH(FEET) = 3 0 . 0 0 - AN EL FLOW TAU SUBAREA(CFS) = 1127.04 _ LOW VELOCITY (FEET /SEC) = 28.63 FLOW DEPTH(FEET) = 3.50 TRAVEL TINE (MIN.) = 0.74 Tc(MIN.) = 22.35 LONGEST FLOWPATH FROM NODE 3 01.0 0 TO NODE 316.00 = 12371.50 FEET. ** * * * **** * * * * * * * * ** * * * * ** *:E** *: * ** ********* ** * **** * * ****** **ic * ** * * ** ** * * *** FLOW PROCESS FROM NODE 316.00 TO NODE 316.00 IS CODE = 81 » » >ADDITION OF SUBAREA TO MAINLINE PEAK FLOW ««< MAINLINE Tc (MIN) = 22.35 • -* ITT YEAR RAINF=ALL I NTENS I TY-- (- SNCH /HR) = - 2 = 8 2 -1- . - SUBAREA LOSS RATE DATA (AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp An SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN RESIDENTIAL "2 DWELLINGS /ACRE" A 23.92 0.98 0.70 32 RESIDENTIAL "2 DWELLINGS /ACRE" B 2.59 0.75 0.70 56 COMMERCIAL 3 6.77 0.75 0.10 56 - - 'NATURAL FAIR COVER "MEADOWS" 3 - 16.60 0.55 1.00 70 COMMERCIAL A 6.21 0.98 0.10 32 . SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = 0.77 'JBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.65 UBAREA AREA (ACRES) = 5 6.0 9 SUBAREA RUNOFF (CFS) = 117.28 •FFECTIVE AREA(ACRES) = 576.98 AREA- AVERAGED Fm(INCH /HR) = 0.52 AREA- AVERAGED Fp(INCH /HR) = 0.63 AREA - AVERAGED Ap = 0.83 TOTAL AREA(ACRES) = 576.98 PEAK FLOW RATE(CFS) = 1195.23 r SUBAREA AREA - AVERAGED RAINFALL DEPTH (INCH) : 5M = 0.57; 30M = 1.17; 1HR = 1.55; 3ER = 3.09; 6HR = 4.78; 24HR =11.88 l ** PEAK FLOW RATE TABLE ** STREAM Q Tc Intensity Fp (FmY Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 1200.56 18.44 3.166 0.62( 0.52) 0.83 504.2 310.00 2 1195.23 22.35 2.821 0.63( 0.52) 0.83 577.0 301.00 NEW PFAX FLOW DATA ARE: PEAK FLOW RATE(CFS) = 1200.56 Tc(MIN.) = 18.44 AREA-AVERAGED Fm (INCH /HR) = 0.52 AREA- AVERAGED Fp (INCH /HR) = 0.62 AREA- AVERAGED Ap = 0.83 EFFECTIVE AREA(ACRES) = 504.20 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 316.00 TO NODE 331.00 I S CODE = 51 » »>COMPUTE TRAPEZOIDAL CHANNEL FLOW« «< > » TRAVELTIME THRU SUBAREA (EXISTING ELEMENT) « «< - LEVATION DATA: UPSTREAM (FEET) = 969.03 DOWNSTREAM (FEET) = 838.41 HANNEL LENGTH THRU SUBAREA (FEET) = 4043.90 CHANNEL SLOPE = 0.0323 _3ANNEL BASE (FEET) = 6.00 "Z" FACTOR = 1.500 LA_NNING' S FACTOR = 0.015 MAXIMUM DEPTH(FEET) = 30.00 CHANNEL FLOW THRU SUBAREA (CFS) = 1200.56 PLOW ti%ELOCI T Y (FEET /SEC) = 29.64 FLOW DEPTH(FEET) = 3.57 TRAVEL TIME (MIN.) = 2.27 Tc(MIN.) = 20.72 -- LONGEST FLOW?ATH FROM NODE 301.00 TO NODE 3 31.0 0 = 164 0 F ET _,OW PROCESS FROM NODE 331.00 TO NODE 331.00 IS CODE = 10 • ,» »MAIN- STREAM MEMORY COPIED ONTO MEMORY BANK # 1 « «< * * * * * * * * * *- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * is * * * * * * * * * * * * * * * FLOW PROCESS FROM NODE 317.00 TO NODE 318.00 IS CODE = 21 » » >RATIONAL METHOD INITIAL SUBAREA ANALYSIS« »USE TIME -OF- CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA« INITIAL SUBAREA FLOW- LENGTH(FEET) = 922.10 ELEVATION-DATA': UP FEET - ) - = - 1 - 0 - 0 - . - 0 - 0 -DOWNS-TIRE-AM-WE-Ea-14- --=- - -- --7-2,4-- -- -- -- - Tc = K *[(LENGTH ** 3.00) /(ELEVATION CHANGE)]* *0.20 SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 9.405 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 4.742 SUBAREA Tc AND LOSS RATETA(ANC AREA Fp Ap SCS Tc DEVELOPMENT TYPE/ SCS SOIL LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN (MIN.) COMMERCIAL A 13.60 0.98 0.10 32 9.41 - SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = SUBAREA RUNOFF(CFS) = 56.85 - 56.85 TOTAL AREA (ACRES) = 13.60 PEAK FLOW RATE(CFS) = .UBAREA AREA - AVERAGED RAINFALL DEPTH (INCH) : 3M = 0.57; 30M = 1.17; 1HR = 1.55; 3HR = 3.08; 6HR =- 4.75; 24HR =11.00 *****************************,********* ***** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** -� � n n T 15 C CODE = 3 l FLOW PROCESS FROM NODE 318.00 TO NODE 319.00 » »>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA « «< » » >USING COMPUTER - ESTIMATED PIPESIZE (NON-PRESSURE FLOW) ««< ELEVATION DATA: UPSTKEAM _(FEET) = 100.00 DOWNSTREAM (FEET) = 74.19 FLOW LENGTH(FEET) = 601.70 MANNING'S N = 0.013 DEPTH OF FLOW IN 27.0 INCH PIPE IS 20.2 INCHES PIPE -FLOW VELOCITY(FEET/SEC.) = 17.82 ESTIMATED PIPE DIAMETER(INCH) = 27.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 56.85 PIPE TRAVEL TIME (MIN.) = 0.56 Tc(MIN.) = 9.97 1523.80 FEET. LONGEST FLOWPATH FROM NODE 317.00 TO NODE 319.00 = ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 319.00 TO NODE 319.00 IS CODE = 81 » » >ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< MAINLINE Tc(MIN) = 9.97 * 100 YEAR RAINF AT,L INTENSITY (INCH /HR) = 4.580 ,UBAREA LOSS RATE DATA (AMC II) : SCS DEVELOPMENT TYPE/ SCS GROUP (A (INCH/HR) (DEC CN LAND USE COMMERCIAL A 10.53 0.98 0.10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp (INCH /ER) - = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.10 • ,q7-AREA ARy' A (ACRES) = 10.5 3 SDEAREA RUNOFF (CFS) = 42 . 48 t JT_AL AREA (ACRES) = 24.13 PEAK FLOW R.ATE(CFS) = 97. UEAREA AREA-AVERAGED RAINF T L DEPTH (INCH) : 3HR = 3.08; 6�R = 4.75; 24HR =11.00 1.5 5M = 0.57; 30M = 1.17; 1H�2 = 1.55; FLOW PROCESS FROM NODE 319.00 TO NODE 320.00 IS CODE = 31 » » >COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA ««< « «< » >USING COMPUTER- ESTIMATED PIPES= (NON-PRESSURE FLOW )««< • ELEVATION DATA: UPSTREAM (FEET) = 100.00 DOWNSTREAM (FEET) = 94.44 - FLOW LENGTH (FEET-) - A-4-4-.-9-0- NL - - S -N - - -0 -033 -- - - - - DEPTH OF FLOW IN 42.0 INCH PIPE IS 30.8 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 12.87 ESTIMATED PIPE DIAMETER(INCH) = 42.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 9 PIPE TRAVEL TIME(MIN.) = 0.58 Tc(MIN.) = 10.54 LONGEST FLOWPATH FROM NODE 317.00 TO NODE 320.00 = 1968.70 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** . -'FLOW PROCESS FROM NODE 320.00 TO NODE 320.00 IS CODE = 81 » »>ADDITION OF SUBAREA TO MAINTLINE PEAK FLOW« «< 1INLINE Tc (MIN) = 10.54 100 YEAR RAINFALL INTENSITY (INCH /T) = 4.428 'UBAREA LOSS RATE DATA (AMC II): Ap SCS DEVELOPMENT TYPE/ SCS S (ACRE (INCH/ER) (DECIMAL) CN LAND USE COMMERCIAL A 10.96 0.98 0 32 RESIDENTIAL "3 -4 DWELLINGS /ACRE" A 1.19 0.98 0.60 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.15 SUBAREA AREA(ACRES) = 12.15 SUBAREA RUNOFF(CFS) = 46.83 EFFECTIVE AREA(ACRES) = 36.28 AREA- AVERAGED Fm (INCH /HR) = 0.11 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.12 TOTAL AREA(ACRES) = 36.28 PEAK FLOW RATE (CFS) = 140.88 SUBAREA AREA- AVERAGED RAINFALL DEPTH (INCH) : 5M = 0.57; 30M = 1.17; 1HR = 1.55; 3HR = 3.08; 6HR = 4.75; 24HR =11.00 ********************************************* * * * * * * * ** ** * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 320.00 TO NODE 321.00 IS CODE = 31 » » >COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA « «< . » » >USING COMPUTER - ESTIMATED -PIPESIZE (NON- PRESSURE FLOW) « «< ELEVATION DATA: UPSTREAM(FEET) = 100.00 DOWNSTREAM(FEET) = 74.76 , LOW LENGTH (FEET) = 707.00 MANNING' S N = 0.013 EPTH OF FLOW IN 39.0 INCH PIPE IS 29.7 INCHES 'IPE -FLOW VELOCITY(FEET /SEC.) = 20.81 2STIM TED - PIPE DIAMETER (INCH) = 39.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 140.88 PIPE TRAVEL TIME(MIN.) = 0.57 TC (MIN.) = 11.11 �r�T LONGEST FLOWPA TH FROM NODE 317.00 TO NODE 32 = 2675.70 1� - . . »ADDITION OF SUBAREA TO MAINLINE PEAK FLOW ««< MAINLINE Tc(MIN) = 11.11 * 100 YEAR RAINFALL INTENSITY(INCH_ /HR) = 4.291 S Urp.REA LOSS RATE DATA (AMC I I) : DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ac SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 48.82 0.98 0.10 32 RESIDENTIAL --- " - 34 - --A _- -___-12 . 9 0.98 0.60 32 DTn...,T,�_ - ACRD - - - - -- - -- - -- - -- -- - - - - -- - - - - - -- SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp (INCH /HR) - _ 0.98 - - S UEAREA A ERAAG-E- PERV3-OI-IS - - RA -CTION - -Ap - 0- . -2 -0 -- -- - SUBAREA AREA(ACRES) = 61.51 SUBAREA RUNOFF(CFS) = 226.60 EFFECTIVE AREA(ACRES) = 97.79 AREA- AVERAGED Fm(INCH/HR) = 0.17 AREA- AVERAGED Fp(INCH/HR) = 0.98 AREA- AVERAGED Ap = 0.17 TOTAL AREA(ACRES) = 97.79 PEAK FLOW RATE(CFS) = 363.01 • SUBAREA AREA - AVERAGED RAINFALL DEPTH (INCH) : 5M = 0.57; 30M = 1.17; 1HR = 1.55; 3HR = 3.08; 6HR = 4.75; 24HR =11.00 *_*,** * iF ** * * is * ** ** **** * * ***** * * ** ** * * :Y**** * * *** * * * ** ** 11111 3 . j . * * **** ** *** * ***'I: FLOW PROCESS FROM NODE 321.00 TO NODE 322.00 I S CODE = 31 » »> COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA « «< - »USING COMPUTER- ESTIMATED PIPESIZE (NON- PRESSURE FLOW) ««< LEVATION DATA: UPSTREAM (FEET) = 100.00 DOWNSTREAM (FEET) = 59.86 , FLOW LENGTH (FEET) = 1303.40 MANNING' S N = 0.013 DEPTH OF FLOW IN 57.0 INCH PIPE IS 43.7 INCHES PIPE -FLOW VELOCITY (rEET/SEA-.) = 24.92 ESTIMATED PIPE DIAMETER (INCH) = 57.00 NUNBER OF PIPES = 1 PIPE-FLOW(CFS) = 363.01 PIPE TRAVEL TIME (MIN.) = 0.87 Tc(MIN.) = 11.98 LONGEST FLOWPATH FROM NODE 317.00 TO NODE 322.00 = 3979.10 FEET. * ** ***************************************** * * * * * * * * * * * * xxxx * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 322.00 TO NODE 322.00 I S CODE = 81 » » >ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< . MAINLINE Tc(MIN) = 11.98 * 100 YEAR RAINFALL INTENS I TY (INCH /HR) = 4.101 SUBAREA LOSS RATE DATA (AMC II) : . DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN RESIDENTIAL "3 -4 DWELLINGS /ACRE" A 38.02 0.98 0.60 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp (INCH /HR) = -0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.60 ^UgAREA AREA(ACRES) = 38.02 SUBAREA RUNOFF (CFS) = 120.31 F FECTIVE AREA(ACRES) = 135.81 AREA AVERAGED Fm(INCH/HR) = 0.28 REA-AVERAGED Fp ( INCH /HR) = 0 . 98 AREA - AVERAGED Ap = 0 . 29 - OTAL AREA(ACRES) = 135.81 PEAK FLOW RATE (CFS) = 466.58 S 1DARM•A AR EL...-AVERAGED RAINFALL DEPT (INCH) : •- M = 0.57; = - = 3F = 3.08; 6HR = /i . 75 ; 74uR = .j OM 1 . 1 / , rid{ = i 55 ; .�1 -LrC = O_i_� = 4.75; • > >COMP E PIPE -FLOW TRAVEL TIME THRU STiBAREA« «< » »USING COMPUTER - ESTIMATED PIPESIZE (NON-PRESSURE FLOW) « «< ELEVATION DATA: UPSTREAM(FEET) = 100.00 DOWNSTREAM(FEET) = FLOW LENGTH(FEET) = 1337.60 MANNING'S N = 0.013 DEPTH OF FLOW IN 63.0 INCH PIPE IS 48.2 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 26.28 ESTIMATED PIPE DIAMETER(INCH) = 63.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 466.58 PIPE TRAVEL TIME (MIN.) =. 0.85 Tc(MIN.) = 12.83 - - ES LOtiGr.�t FLOWPATH FROM NODE _ 317. 00 - TO' NGDU -5316-70-FEET. 70--- EEi .- - - ************-********************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 323.00 TO NODE 323.00 IS CODE = 81 » » >ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< MAINLINE Tc(MIN) = 12.83 * 100 YEAR RAINFALL INTENSITY(INCH /HR) 3.936 SUBAREA LOSS RATE DATA(AMC II): .- TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN RESIDENTIAL "3 -4 DWELLINGS /ACRE" A 39.29 0.98 0.60 32 S UBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 EAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.60 UBAREA AREA(ACRES) = 39.29 SUBAREA RUNOFF(CFS) = 118.50 TFECTIVE AREA(ACRES) = 175.10 AREA- AVERAGED Fm(INCH /HR) = 0.35 LREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.36 TOTAL AREA(ACRES) = 175.10 PEAK FLOW RATE(CFS) = 564.93 SUBAREA AREA - AVERAGED RAINFALL DEPTH(INCH): 5M = 0.57; 30M = 1.17; 1HR = 1.55; 3HR = 3.08; 6HR = 4.75; 24HR =11.00 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 323.00 TO NODE 323.00 IS CODE = 10 » » >MAIN- STREAM MEMORY COPIED ONTO MEMORY BANK # 2 « «< ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 409.00 TO NODE 409.00 IS CODE = 15.1 » » >DEFINE MEMORY BANK # 3 « «< PEAK FLOWRATE TABLE FILE NAME: A: \0409.pft MEMORY BANK # 3 DEFINED AS FOLLOWS: STREAM Q Tc Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (ACRES) NODE • 1 910.72 16.55 0.98( 0.23) 0.24 309.2 4 01.00 TOTAL AREA(ACRES) = 309.17 INGEST FLOWPATH FROM NODE 401.00 TO NODE 409.00 = 7359.20 FEET. . * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 409.00 TO NODE 409:00 IS CODE = 14.0 »» MEMORY BANK # 3 COPIED ONTO MAIN- .S TREAM MEMORY ««< SIN- STREAM MEMORY DEFINED AS FOLLOWS: STREAM Q T c Fp (Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH/HR) NODE 0.23) 0.24 (ACRES) 309.2 401.00 1 - 90.72 TOTAL AREA (ACRES) = 309.17 LONGEST FLOWPATH FROM NODE 401.00 TO NODE 409.00 = 7359.20 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 409.00 TO NODE 323.00 IS CODE = 31 _ » » >COMPLTrE PIPE -FLOW TRAVEL TIME THRU SUBAREA « «< » » >USING COMPUTER - ESTIMATED PIPESIZE (NON =TRESS R FLOW - c«< -- < ELEVATION DATA: UPSTREAM(FEET) = 100.00 DOWNSTREAM(FEET) = 96.17 FLOW LENGTH(FEET) = 1236.00 MANNING'S N = 0.013 DEPTH OF FLOW IN'126.0 INCH PIPE IS 92.7 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 13.34 ESTIMATED PIPE DI_AMETER(INCH) = 126.00 NUMBER OF PIPES = 1 PIPE - FLOW(CFS) = 910.72 • PIPE TRAVEL TIME (MIN.) = 1.54 Tc(MIN.) = 18.09 LONGEST FLOWPATH FROM NODE 401.00 TO NODE 323.00 = 8595.20 FEET. ************* **************************;***** * * * * * * * * *xxx * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 323.00 TO NODE 323.00 IS CODE = 11 » »CONFLUENCE MEMORY BANK # 2 WITH THE MAIN - STREAM MEMORY« «< =* MAIN STREAM CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFc) (MTN _) (1-NCH/FR) (INCH /HR) (ACRES) NODE 1 910.72 18.09 3.203 0.98( 0.23) 0.24 309.2 401.00 LONGEST FLOWPATH FROM NODE 401.00 TO NODE 323.00 = 8595.20 FEET. • ** MEMORY BANK # 2 CONFLUENCE DATA ** STREAM Q Tc' Int ens - ity Fp(Fm) Ap Ae -- -- HEATHAT iT-E - - - NUMBER (CFS) MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 564.93 12.83 3.936 0.98( 0.35) 0.36 175.1 317.00 LONGEST FLOWPATH FROM NODE 317.00 TO NODE 323.00 = 5316.70 FEET. ** PEAK FLOW RATE TABLE ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH/MR.) (INCH /HR) (ACRES) NODE 1 1370.28 12.83 3.936 0.98( 0.29) 0.29 394.3 317.00 2 1360.05 18.09 3.203 0.98( 0.28) 0.28 484.3 401.00 TOTAL AREA(ACRES) = 484.27 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS_ PEAK FLOW RATE (CFS) = 1370.28 Tc(MIN.) = . 12.830 EFFECTIVE AREA(ACRES) = 394.34 AREA - AVERAGED Fm (INCH /B-R) = 0.29 REA -AV E AGED Fp (INCH /HR) = 0.98 AREA -A RAGED Ap = 0.28 DTAL AREA(ACRES) = 484.27 ,ONGEST FLOWPATH FROM NODE 401.00 TO NODE 323.00 = 8595.20 FEET. <******************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 323.00 TO NODE 324,00 IS CODE = 31 ""^� T '-1 T T r PIPE-FLOW TRAVEL { f j�N » » > COMp�J'TR rT_ r'!,CW '�'- 1� TH1cU Su�nr�r.x ««< 770-h= r` ivi �:177H R - r:C 7 1'I7A9 PM (NON - PRESSURE FLOW) ««< ,EVATION DATA: UPS'1'EAM (FEET) = 100.00 DOWNSTREAM(FEET) = 63.72 - LOW LENGTH(FEET) = 1511.80 MANNING'S N = 0.013 EPTH OF FLOW IN 95.0 INCH PIPE IS 78.2 INCHES PIPE -FLOW VELOCITY" (FEET /SEC_) = 31.24 ESTIMATED PIPE DIAMETER (INCH) = 96.00 NUMBER OF PIPES = 1 PIPE - FLOW(CFS) = 1370.28 PIPE TRAVEL TIME (MIN .) = 0.81 Tc(MIN.) = 13.64 LONGEST FLOWPATH FROM NODE 401.00 TO NODE 324.00 = 10107.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** -- FLOW PROCESS FROM NODE _ _34_ TO NODE 324.00 I S CODE = 81 » »»ADDITION OF SUBAREA TO MAINLINE PEAK FLOW « «< MAINLINE Tc (MIN) = 13.64 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.795 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN RESIDENTIAL "3-4 DWELLINGS /ACRE" A 39.38 0.98 0.60 32 - SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp (INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.60 SUBAREA AREA(ACRES) = 39.38 SUBAREA RUNOFF(CFS) = 113.77 EFFECTIVE AREA(ACRES) = 433.72 AREA- AVERAGED Fm(INCH /HR) = 0.31 REA- AVERAGED Fp(INCH/HR) = 0.98 AREA- AVERAGED Ap = 0.32 JTAL AREA(ACRES) = 523.65 PEAK FLOW RATE(CFS) = 1370.28 OTE: PEAK FLOW RATE DEFAULTED TO UPSTREAM VALUE SUBAREA AREA - AVERAGED RAINFALL DEPTH(INCH): 5M = 0.57; 30M = 1.17; 1HR = 1.55; 3H? = 3.08; 6HR = 4.75; 24HR =11.00 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 324.00 TO NODE 325.00 IS CODE = 31 » »»COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA« «< » »»USING COMPUTER- ESTIMATED PIPESIZE (NON- PRESSURE FLOW) « «< ELEVATION DATA: UPSTREAM(FEET) = • 100.00 DOWNSTREAM(FEET) = 85.29 FLOW LENGTH(FEET) = 1131.80 MANNING'S N = 0.013 DEPTH OF FLOW IN 108.0 INCH PIPE IS 87.3 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 24.87 ESTIMATED PIPE DIAMETER(INCH) = 108.00 NUMBER OF PIPES = 1 PIPE-FLOW(CFS) = 1370.28 PIPE TRAVEL TIME (MIN.) = 0.76 Tc(MIN.) = 14.40 LONGEST FLOWPATH FROM NODE 401.00 TO NODE 325.00 = 11238.80 FEET. ********* ************************'************ * * * * * * * * * * * * * * * * * * ** * * * * * * * * * ** FLOW PROCESS FROM NODE 325.00 TO NODE 325.00 IS CODE = 81 >» »ADDITION OF SUBAREA TO MAINLINE PEAK FLOW « «< 'AINLINE Tc(MIN) = 14.40 100 YEAR RAINFALL INTENSITY (INCH /HR) = 3.674 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE npOT7D (T CR S) (TNCR /3-TR) (DECIM CN A 74.51 0.98 0.10 32 COMMERCIAL _ _ _ nnntr�r=o rT7T. 1.55 0.75 0. 1 0 1 -4 DWELLINGS /ACRE" A 14.70 0.98 0.60 32 AREA AVERAGE PERVIOUS LOSS RATE, Fp (INCH /} = 0.97 - EA AVERAGE PERVIOUS AREA FACTION, Ap = 0.18 285.73 J I.�BAR.EA AREA(ACRES) = 90.77 SUsA_REA RUNOFF (CFS) = - 524.50 AREA - AVERAGED Fm (INCH/ R) = 0.29 EF'FE CT - VE AREA(ACRES) = AREA-AVERAGED Fp (INCH /h7.) = 0.97 AREA- AVERAGED Ap = 0.30 1597.52 TOTAL AREA(ACRES) = 614.42 PEAK FLOW RATE(CFS) = SUBAREA AREA - AVERAGED RAINFALL DEPTH (INCH) = 4.75; 24I =11.0 0 5M = 0.57; 30M = 1.17; 1HR = 1.55; 3HR = 3.08; 6HR FLOW PROCESS FROM NODE 325.00 TO NODE 325.00 I S CODE = 1 » »»DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« «< -_- TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION (MIN.) = 14.40 RAINFALL INTENSITY(INCH /HR) = 3.67 AREA- AVERAGED Fm (INCH /HR) = 0.29 . - AREA- AVERAGED Fp (INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.30 EFFECTIVE STREAM AREA(ACRES) = 524.50 TOTAL STREAM AREA(ACRES) = 614.42 - T;AK FLOW RATE(CFS) AT CONFLUENCE = 1597.52 * ****************************************** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** LOW PROCESS FROM NODE 326.00 TO NODE 327.00 IS CODE = 21 - - RATIONAL METHOD INITIAL SUBAREA ANALYSIS« »USE TIME- OF- CONCEN T RATION NOMOGRAPH FOR INITIAL SUBAREA« INITIAL SUBAREA FLOW-LENGTH(FEET) = 382.60 ELEVATION DATA: UPSTREAM(FEET) = 100.00 DOWNSTREAM(FEET) = 88.33 Tc = K* [ (LENGTH* * 3. 00)/(ELEVATION CHANGE) ] * * 0 . 2 0 . SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 6.593 * 100 YEAR RAINFALL-_ INTENS I TY (INCH /HR) = 5.869 SUBAREA Tc AND LOSS RATE DATA (AMC II) : Tc . DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN (MIN.) COMMERCIAL A 10.19 0.98 0.10 32 6.59 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp (INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.10 SUBAREA RUNOFF(CFS) = 52.93 TOTAL AREA(ACRES) = 10.19 PEAK FLOW RATE(CFS) = 52.93 SUBAREA AREA - AVERAGED RAINFALL DEPTH(INCH): 5M = 0.57; 30M = 1.17; LPL. = 1.55; 3HR = 3.08; 6HR = 4.75; 24HR =11.00 i ***************************************** * ** * * * * * * * * * * * * * * * * * * * * * * * * * * ** i3OW PROCESS FROM NODE 327 . 0 0 TO NODE 328 . 0 0 I S CODE = 31 »» »COMPUTE PIPE -FLOW TRAVEL TIME THRU, SUBAREA« «< » »»USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) « «< pp b . - - - -- n /'1T77�7�+ T. REAM � BEET) C 9-6- I ,EvAT I ON DATA : UPSTR AMM (FEET) = 100 .00 DOWNS RE \_ = -- --- T TfTT.- '.R'TTT I t•L• L"f • 1 - R { J n v A iV�T ; ' S N = 0 . 013 -PE -FLOW VELOCITY(FEET /SEC_) = 14.07 £TIM ED PIPE DIAMETER (INCH) = 30.00 NUMBER OF PIPES = 1 IPE -FLOW (C_ S) = 52.93 PIPE TRAVEL TIME(MIN.) = 0.66 Tc(MIN.) = 7,.25 LONGEST FLOWPATH FROM NODE 326.00 TO NODE 328.00 = 935.80 FEET. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * it * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * FLOW PROCESS FROM NODE 328.00 TO NODE 328.00 IS CODE = 81 » »>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< • MAINLINE Tc(MIN) * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 5.545 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS - LAND USE GROUP (ACRES) (INCH / HR) (DECIMAL) CN COMMERCIAL A 11.68 0.98 0.10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.10 SUBAREA AREA(ACRES) = 11.68 SUBAREA RUNOFF(CFS) = 57.26 EFFECTIVE AREA(ACRES) = 21.87 AREA- AVERAGED Fm(INCH/HR) = 0.10 .-AREA-AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 21.87 PEAK FLOW RATE(CFS) = 107.21 SUBAREA AREA - AVERAGED RAINFALL DEPTH(INCH): -M = 0.57; 30M = 1.17; 1HR = 1.55; 3HR = 3.08; GHR = 4.75; 24HR =11.00 _LOW PROCESS FROM NODE 328.00 TO NODE 329.00 IS CODE = 31 COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA« «< » » >USING COMPUTER - ESTIMATED PIPESIZE (NON- PRESSURE FLOW) « «< ELEVATION DATA: UPSTREAM(FEET) = 100.00 DOWNSTREAM(FEET) = 70.86 FLOW LENGTH(FEET) = 971.20 MANNING'S N = 0.013 DEPTH OF FLOW IN 36.0 INCH PIPE IS 28.1 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 18.13 ESTIMATED PIPE DIAMETER(INCH) = 36.00 NUMBER OF PIPES = 1 PIPE - FLOW(CFS) = 107.21 PIPE TRAVEL TIME(MIN.) = 0.89 Tc(MIN.) = 8.14 LONGEST FLOWPATH FROM NODE 326.00 TO NODE 329.00 = 1907.00 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 329.00 TO NODE 329.00 IS CODE = 81 » »>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< N MAINLINE Tc (MIN) = 8 .14 * 100 YEAR RAINFALL INTENSITY (INCH / HR) = 5.171 SUBAREA LOSS RATE DATA (AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN OMMERCIAL A 11.97 0.98 0.10 32 310TERCIAL B 10.00 0.75 0.10 56 SUBAREA AVERAGE PERVIOUS LOSS RATE, F p (INCH /IER) = 0.87 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0:10 SUBAREA AREA(ACRES) = 21.97 SUBAREA RUNOFF ((CFS) = 100.53 _ ES T, , ,, T T ( 1CH/H ) EFFECTIVE AREA(ACRES) = 43.84 �-REA- yvER -iGE!� F�Tt = 0.09 ( i �.H _y., T72�7\_77.7 ;�aa 7) rn(T1v`r' =-7/7i7) = 0.92 AREA -A 7R GED Ap = 0.10 OBAREA AREA- AVERAGED RAINFALL DEPTH (INCH) : 4 = 0.57; 30M = 1.17; 1L-R = 1.55; 3HR = 3.08; 6HR = 4.75; 24HR =11.00 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * is * * * * * * * * FLOW PROCESS FROM NODE 329.00 TO NODE 330.00 IS CODE 31 »» »COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA ««< » »»USING COMPUTER- ESTIMATED PIPESIZE (NON- PRESSURE FLOW)« «< __ELEVATION _ ELEVATION DATA: UPSTREAM(FEET) = 100.00 DOWNSTREAM (FEET) = 91.14 FLOW LENGTH = 506.50 MANNING'S N DEPTH OF FLOW IN 51.0 INCH PIPE IS 38.6 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 17.41 ESTIMATED PIPE DIAMETER(INCH) = 51.00 NUMBER OF PIPES = 1 PIPE - FLOW(CFS) = 200.40 PIPE TRAVEL TIME (MIN.) = 0.48 Tc(MIN.) = 8.63 LONGEST FLOWPATH FROM NODE 326.00 TO NODE 330.00 = 2413.50 FEET. • ********************************************* * * * * * * * * * * * * ** * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 330.00 TO NODE 330.00 IS CODE = 81 f » »»ADDITION OF SUBAREA TO MAINLINE PEAK FLOW « «< MAINLINE Tc(MIN) = 8.63 100 YEAR RAINFALL INTENSITY(INCH /HR) = 4.995 JBAREA LOSS RATE DATA (AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN _OMMERCIAL A 0.63 0.98 0.10" 32 COMMERCIAL B 19.23 0.75 0.10 56 AVERAGE PERVIOUS LOSS F E - F ' PH2 SUBAREA nJERA�� u�� .,�� �,.,�5 .xT�., p (I2•rCH; ) = 0.76 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.10 SUBAREA AREA(ACRES) = 19.86 SUBAREA RUNOFF(CFS) = 87.93 EFFECTIVE AREA(ACRES) = 63.70 AREA- AVERAGED Fm(INCH /HR) = 0.09 AREA- AVERAGED Fp(INCK /HR) = 0.87 AREA- AVERAGED Ap = 0.10 TOTAL AREA(ACRES) = 63.70 PEAK FLOW RATE(CFS) = 281.36 SUBAREA AREA - AVERAGED RAINFALL DEPTH (INCH) : 5M = 0.57; 30M = 1.17; 1HR = 1.55; 3HR = 3.08; 6HR = 4.75; 24HR =11.00 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 330.00 TO NODE 325.00 IS CODE = 31 » »»COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA ««< » »»USING COMPUTER- ESTIMATED PIPESIZE (NON - PRESSURE FLOW) « «< ELEVATION DATA: UPSTREAM (FEET) = 100.00 DOWNSTREAM (FEET) = 89.89 FLOW LENGTH(FEET) = 552.50 MANNING'S N = 0.013 DEPTH OF FLOW IN 57.0 INCH PIPE IS 43.9 INCHES DIPE -FLOW VELOCITY(FEET/SEC.) = 19.22 3TIMATED PIPE DIAMETER(INCH) = 57.00 NUMBER OF PIPES = 1 'IPE- FLOW(CFS) = 281.36 IPE TRAVEL TIME (MIN.) = 0.48 Tc(MIN.) = - 9.11 TONGE S T FLOWPATH FROM NODE 326.00 TO NODE 325.00 = 2966.00 FEET . FLOW PROCESS FROM NODE 325.00 TO NODE 325.00 IS CODE = 1 > > > >AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES « « < OTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION (MIN _) = 9.11 RAINFALL INTENSITY (INCH /HR) = 4.84 AREA - AVERAGED Fm(INCH /HR) = 0.09 AREA - AVERAGED Fp(INCH/HR) = 0.87 AREA- AVERAGED Ap = 0.10 EFFECTIVE STREAM AREA(ACRES) = . 63.70 TT AL__ STREW ,T`'i - AREA (ACRES) = 63.70 PEAK FLOW RATE(CFS) AT CONFLUENCE = 281.3 ** CONFLUENCE DATA ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 1597.52 14.40 3.674 0.97( 0.29) 0.30 524.5 317.00 1 1529.57 19.66 3.047 0.97( 0.28) 0.29 614.4 401.00 , 2 281.36 . 9.11 4.835 0.87( 0.09) 0.10 63.7 326.00 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO _ -- CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER NUMBER (CFS) (MIN.) (INCH /HR) (INCH /HR) (ACRES) NODE 1 1638.76 9.11 ' 4.835 0.97( 0.26) 0.27 395.5 326.00 2 1810.04 14.40 3.674 0.97( 0.27) 0.28 588.2 317.00 3 1704.97 19.66 3.047 0.97( 0 .26) 0.27 678.1 401.00 ' COMPUTED CONFLUENCE ESTIMATES ARE A.S FOLLOWS : L. Vl"lt'U 1L+L CONFLUENCE �+.-+ PEAK FLOW RATE(CFS) = 1810.04 Tc (MIN •) = 14.40 EFFECTIVE AREA(ACRES) = 588.20 AREA- AVERAGED Fm(INCH/HR) = 0.27 AREA- AVERAGED Fp(INCH /HR) = 0.97 AREA- AVERAGED Ap = 0.28 TOTAL AREA(ACRES) = 678.12 LONGEST FLOWPATH FROM NODE 401.00 TO NODE 325.00 = 11238.80 FEET. -********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 325.00 TO NODE 325.00 IS CODE = 71 » »>PEAK FLOW RATE ESTIMATOR CHANGED TO UNIT- HYDROGRAPH METHOD ««< » »>USING TIME -OF- CONCENTRATION OF LONGEST FLOWPATH « «< UNIT- HYDROGRAPH DATA: RAINFALL(INCH) : 5M= 0.56;30M= 1.16;1H= 1.53 ; 3H= 3.06;6H= 4.74;24H=11.00 S- GRAPH: VALLEY (DEV.) = 45.6 0 ; VALLEY (UN'DEV .) /DESERT= 0 . 0 MOUNTAIN= 0.0o;FOOTHILL= 54.4o;DESERT(UNDEV.)= 0.00 Tc (la) = 0.33; LAG(HR) = 0.26; Fm(INCH/HR) = 0.21; Ybar = 0.17. USED SIERRA MADRE DEPTH -AREA CURVES WITH AMC III CONDITION. DEPTH -AREA FACTORS: 5M = 0.97; 30M = 0.97; 1HR = 0.97; ;HR = 1.00; 6HR = 1.00; 24HR= 1.00 TIT-INTERVAL(MIN) =. 2.50 TOTAL AREA(ACRES) = 678.12 •ONGEST FLOWPATH FROM NODE 401.00 TO NODE 325.00 = 11238.80 FEET. EQUIVALENT BASIN FACTOR APPROXIMATIONS: Lca /L= 0.3,n= .0131; Lca /L= 0.4,n= .0117; Lca /L= 0.5,n= .0108;Lca /L = =. 0100 TIME OF PEAK FLOW (h) ) = 16.33 RUNOFF VOLUME (AF} = 538.01 Tl'55��� V I A r. r P F T K FLOW TE LJ1\ - - � Y� - \V Vl�.f�i u1 METHOD r�<i11 �7 �/ YV RATE(CFS) (1... C FU) - 1 87.79 RAT=ONAL Iv TROD PEAK FLOW RATE(CFS) = 1810.04 ,T�T1 .,T Ti ' n'7 DTT� ! ('�: C l - l R i fl n41 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * LOW PROCESS FROM NODE 325.00 TO NODE 331.00 IS CODE = 31 » » >COMPUT E PIPE -FLOW TRAVEL TIME THRU SUBAREA « «< »> »USING COMPUTER- ESTIMATED PIPESIZE (NON- PRESSURE FLOW) « «< ELEVATION DATA: UPSTREAM(FEET) = 100.00 DOWNSTREAM(FEET) = 54.31 FLOW LENGTH (FEET) = 2367.50 MANNING' S N = 0.013 DEPTH OF FLOW TN 114.0 INCH PIPE IS 87_9 INCHES PIPE -- LOW--- -VETOCITY_(FEET /SEC.) = 31.33 ESTIMATED PIPE DIAMETER(INCH) = 114..00 NUMBER OF PZPES - - 1 PIPE-FLOW(CFS) = 1837.79 PIPE TRAVEL TIME(MIN.) = 1.26 Tc(MIN.) = 20.92 LONGEST FLOWPATH FROM NODE 401.00 TO NODE 331.00 = 13606.30 FEET. ***********•********************************** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 331.00 TO NODE 331.00 IS CODE = 81 » »>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW ««< -MAINLINE Tc (MIN) = 20.92 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 2.936 SUBAREA LOSS RATE DATA(AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN 3MMERCIAL A 8.54 0.98 0.10 32 'OMMERCIAL B 25.43 0.75 0.10 56 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = 0.81 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.10 UNIT - HYDROGRAPH DATA: RAINFALL(INCH): 5M= 0.57;30M= 1.16;1H= 1.53;3H= 3.06;6H= 4.74;24H=11.00 S- GRAPH: VALLEY (DEV.) = 43 .4 ;VALLEY (UNDEV.) /DESERT= 0.0% MOUNTAIN= 0.0o;FOOTHILL= 54.4o;DESERT(UNDEV.)= 2.2% Tc(HR) = 0.35; LAG(HR) = 0.28; Fm(INCH /HR) = 0.21; Ybar = 0.17 - USED SIERRA MADRE DEPTH -AREA CURVES WITH AMC III CONDITION. DEPTH -AREA FACTORS: 5M = 0.97; 30M = 0.97; 1HR = 0.97; 3HR = 1.00; 6HR = 1.00; 24HR= 1.00 UNIT-INTERVAL(MIN) = 2.50 TOTAL AREA (ACRES) = 712.09 LONGEST FLOWPATH FROM NODE 401.00 TO NODE 331.00 = 13606.30 FEET. EQUIVALENT BASIN FACTOR APPROXIMATIONS: Lca /L= 0.3,n= .0154; Lca /L= 0.4,n= .0138; Lca /L= 0.5,n= .0127;Lca /L =0.6,n =.0119 TIME OF PEAK FLOW(HR) = 16.08 RUNOFF VOLUME(AF) = 646.43 UNIT - HYDROGRAPH PEAK FLOW RATE(CFS) = 1843.08 TOTAL AREA(ACRES) = 712.09 PEAK FLOW RATE(CFS) = 1843.08 SUBAREA AREA- AVERAGED RAINFALL DEPTH (INCH) : 5M = 0.57; 30M = 1.17; 1HR = 1.55; 3HR = 3.08; 6HR = 4.75; 24i-ia =11.00 FLOW PROCESS FROM NODE 331.00 TO NODE 331.00 IS CODE = 11 - » CONFLUENCE MEMORY BANK # 1 WITH THE MAIN- STREAM MEMORY««< ** MAIN STREAM CONFLUENCE DATA ** - PEAK FLOW _ C-._) = 8 Tc(MIN.) .���_� �"J�� �Z li��l. �'�� - 1b4.3 UZJ - 20.92 AREA-AVERAGED Frn (INCH /HR) = 0.21 Ybar = 0.17 - -- _ -- �� no x MEMORY BANK # 1 CONFLUENCE DATA ** STREAM Q Tc Intensity Fp (Fm) Ap Ae HEADWATER NUT.EER. (CFS) (MIN.) (INCH/HR) (INCH/la) (ACRES) NODE 1 1200.56 20.72 2.953 0.62( 0.52) 0.83 504.2 310.00 2 1195.23 24.63 2.662 0.63( 0.52) 0.83 577.0 301.00 LONGEST FLOWPATH FROM NODE 301.00 TO NODE 331.00 = 16415.40 FEET. • COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: UNIT-HYDROGRAPH DATA: RAINFALL(INCE): 5M= 0.57;30M=1.171 1.55;3H= 3.12;6E= 4.87;2411=11.74 S-GRAPH: VALLEY (V 24 0%7VALLEY(UNDEV /DESERT- 0-,0% - MOUNTAIN= 0.0%;FOOTHILL= 76.0%;DESERT(UNDEV.)= 0.0% Tc(HR) = 0.41; LAG(HR) = 0.33; Fm(INCH/HR) = 0.24; Ybar = 0.17 USED SIERRA MADRE DEPTH-AREA CURVES WITH AMC III CONDITION. DEPTH-AREA FACTORS: 5M = 0.94; 30M = 0.94; 1HR = 0.94; 3HR = 0.99; 6HR = 1.00; 24HR= 1.00 UNIT-INTERVAL(MIN) = 2.50 TOTAL AREA(ACRES) = 1289.07 LONGEST FLOWPATH FROM NODE 301.00 TO NODE 331.00 = 16415.40 FEET. EQUIVALENT BASIN FACTOR APPROXIMATIONS: Lca/L=0.3,n=.0310; Lca/L=0.4,n=.0278; Lca/L=0.5,n=.0256;Lca/L=0.6,n=.0238 .-TIME OF PEAK FLOW(HR) = 16.42 RUNOFF VOLUME(AF) = 1085.58 PEAK FLOW RATE(CFS) = 3095.57 **************************************************************************** - LOW PROCESS FROM NODE 331.00 TO NODE 331.00 IS CODE = 152 ‘>>»STORE PEAK FLOWRATE TABLE TO A FILE««< ( PEAK FLOWRATE TABLE FILE NAME: A:\0331.pft END OF STUDY SUMMARY: TOTAL AREA(ACRES) = 1289.07 TC(MIN.) = 24.63 AREA-AV Fm(INCH/HR)= 0.24 Ybar = 0.17 PEAR FLOW RATE(CFS) = 3095.57 END OF INTEGRATED RATIONAL/UNIT-HYDROGRAPH METHOD ANALYSIS 1 RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE (R 1986 SAN BERNziRDINO CO. HYDROLOGY CRITERION) (c) Copyright 1983 -2001 Advanced Engineering Software (aes) Ver. 8.0 Release Date: 01/01/2001 License ID 1224 Analysis prepared by: • SAN BERNARDINO COUNTY BRANSPORTATICN _J - FLOOD CONTROL, DEPARTMENT WATER RESOURCES DIVISION * * ** * * * * * * * * * * * * * * * * * * * * ** DESCRIPTION OF STUDY * * * * * * * * * * * * * * * * * * * * * * * * ** * San Sevaine Channel Hydrology- Ultimate Conditions * * 100 yr Return Frequency * * Revised Land Use per City's Alt. 4 Land Use Map * ******************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FILE NAME: A: \SSO4R.DAT - OF STUDY: 09:18 10/15/2002 USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: -- *TIME -OF- CONCENTRATION MODEL*- - 'SER SPECIFIED STORM EVENT (YEAR) = 100.00 ..PECIFIED MINIMUM PIPE SIZE (INCH) = 18.00 SPECIFIED PERCENT OF GRADIENT'S (DECIMAL) TO USE FOR FRICTION SLOPE = 0.95 _ LOGARITHMIC INTERPOLATION USED FOR RAINF+PLL* *USER- DEFINED LOGARITHMIC .LiV1L,ltrv.ue-i1.LVly v.�ii SLOPE OF I.NTENSITY DURATION C`tJRVE (LOG (I ; IN /HR) vs. LOG (Tc ;MIN)) = 0.6000 USER SPECIFIED 1 -HOUR INTENSITY(INCH /HOUR) = 1.4970 *ANTECEDENT MOISTURE CONDITION (AMC) II ASSUMED FOR RATIONAL METHOD* UNIT- HYDROGRAPH MODEL SELECTIONS /PARAMETERS: WATERSHED LAG = 0.80 * Tc VALLEY(DEVELOPED) S -GRAPH USED. PRECIPITATION DATA ENTERED ON SUBAREA BASIS. SIERRA MADRE DEPTH -AREA FACTORS USED. *ANTECEDENT MOISTURE CONDITION (AMC) III ASSUMED FOR UNIT HYDROGRAPH METHOD* ********************************************** * * * * * * * * * * * * * * * * * * * * * * * * * *- * * ** FLOW PROCESS FROM NODE 401.00 TO NODE 402.00 IS CODE = 21 » »>RAT IONAL METHOD INITIAL SUBAREA ANALYSIS « «< FUSE TIME -OF- CONCENTRATION NOMOGRAPH FOR INITIAL SUBAREA« NITIAL SUBAREA FLOW - LENGTH(FEET) = 1432.30 L EVATION DATA: UPSTREAM (FEET) = 100.00 DOWNSTREAM (FEET) = 57.03 fc = K* [ (LENGTH ** 3.00)/(ELEVATION CHANGE) ] * *0.20 USED MINIMUM � I�� 1 1 = i SUBAREA ANALYSIS � �D c i- ��� 1 1_217 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 4.094 LALN USE GROUP (ACRES) (INCH /I ) (DECIMAL) CN (MIIN. ) .OMNERCIAL A 17.09 0.98 0.10 32 11.22 i AR1A AVERAGE PERVIOUS LOSS RATE , F;) ( INCH /HR) = 0 . 98 SUBAREA AVERAGE PERVIOUS AREA t'tlACTI0N, AD = 0. 10 SUBAREA RUNOFF (CFS) = 61 . 7 PEAK FLOW RATE (CFS) = 61.4 7 TOTAL AR ", (ACRES) = 17.0 9 SUBAREA AREA- AVERAGED RAINFALL DEPTH ( INCH) : 5M = 0.56; 30M = 1.15; 1HR = 1.52; 3HR = 3.05; 6HR = 4.75; 24HR =11.01 - - - - * ** *** aY y;- x- x- x_ xa � Yx**** * * *.`...'".. * * * * * * **** **** ***k****** * * ** *** *** ***** *** - - - - - -- - - -- ** FLOW PROCESS FROM NODE 402 . 0 0 TO NODE 403 . 0 0 IS CODE =- » »»COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA ««< » »»USING COMPUTER- ESTIMATED PIPESIZE (NON - PRESSURE FLOW) « «< ELEVATION DATA : UPSTREAM ( FEET) = 100 . 00 DOWNSTREAM ( FEET) = 83 . 68 FLOW LENGTH (FEET) = 444 _ 60 MANNING' S N = 0 . 013 DEPTH OF FLOW IN 30 . 0 INCH PIPE IS 20 . 3 INCHES PIPE -FLOW VELOCITY ( FEET/SEC .) = 17.34 ESTIMATED PIPE DIAMETER(INCH) = 30.00 NUMBER OF PIPES = 1 . —PIPE- FLOW (CFS) = 61.47 PIPE TRAVEL TIME (MIN_) = 0.43 Tc (MIN.) = 11 _ 64 LONGEST FLOWPATH FROM NODE 401 . 00 TO NODE 403 . 00 = 1876 . 90 FEET _ LOW PROCESS FROM NODE 403.00 TO NODE 403.00 IS CODE = 81 > » »ADDITION OF SUBAREA TO MAINLINE PEAK FLOW««< MAINLINE Tc (MIN) = 11.64 * 100 YEAR RAINFALL INTENSITY ( INCH / 1Tc) = 4 . 004 SUBAREA LOSS RATE DATA (AMC I I ) : DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) ( INCH /HR) (DECIMAL) CN COMMERCIAL A 11.63 0.98 0 _ 10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp ( INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION , Ap = 0.10 SUBAREA AREA (ACRES) = 1 SUBAREA RUNOFF ( CFS) = 40 . 89 EFFECTIVE AREA (ACRES) = 28.72 AREA- AVERAGED Fm (INCH /T1-1R) = 0.10 .AREA-AVERAGED Fp ( INCH /HR) = 0 . 98 AREA- AVERAGED Ap = 0. TOTAL A_REA (ACRES ) = 28.72 PEAK FLOW RATE (CFS) = 100.96 SUBAREA AREA - AVERAGED RAINFALL DEPTH ( INCH) : 5M = 0.57; 30M = 1.17; 1HR = 1.54; 3HR = 3.07; 6I-IR = 4.75; 24HR =11.00 ********************************************** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 403:00 TO NODE 404.00 IS CODE = 31 » »>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA ««< » »USING COMPUTER ESTIMATED PIPESIZE (NON- PRESSURE FLOW) « «< - -ELEVATI ON DATA : UPS'T'REAM ( FEET) = 100 . 00 DOWNSTREAM (FEET) ' = 86 . 62 ?LOW LENGTH (FEET) = 514 . 70 MANNING' S N = 0 . 013 DEPT'_ OF FLOW IN 36 _ 0 INCH PIPE IS 28 _4 INCHES PIPE -FLOW VELOCITY (FEET /SEC.) = 16 .89 - ESTIMATED PIPE D I 7 VIh•T F', = ICIUNEST- .r OF 1 IPES = 1 STIN�A � ED PIP L� R( =Iv CH) 3 6. 0 0 7- PE-FLOW (CFS) = 100.96 _ -- - . , .. -- T.- i-, r TT7 1 — 1 ') 1 = LOW PROCESS FROM NODE 404.00 TO NODE 404.00 IS CODE = 81 » »»ADDITION OF SUBAREA TO MAINLINE NE PEAK FLOW«<« MAINLINE Tc(MIN) = 12.15 * 100 YEAR RAINFALL INTENSITY(INCH /HR) = 3.902 SUBAREA LOSS RATE DATA (AMC •I I) : - ._..- DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS L . - T _GROUP (ACRES) c) (INCH /_NR) (DECIMAL) CN COMMERCIAL A 21.23 0.98 - - -- 0 I 0 - - - - -- 32 - - - - RESIDENTIAL "3 -4 DWELLINGS /ACRE" A 3.54 0.98 0.60 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.17 SUBAREA AREA(ACRES). = 24.78 SUBAREA RUNOFF(CFS) =' 83.29 EFFECTIVE AREA(ACRES) = 53.50 AREA- AVERAGED Fm(INCH /HR) = 0.13 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.13 TOTAL AREA(ACRES) = 53. PEAK FLOW RATE(CFS) = 181.64 . .-SUBAREA , AREA - AVERAGED RAINFALL DEPTH(INCH) : 5M = 0.57; 30M = 1.17; 1HR = 1.54; 3HR = 3.08; 6HR = 4.75; 24HR =11.00 - ,OW PROCESS FROM NODE 404.00 TO NODE 405.00 IS CODE = 31 » »COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA« «< ,>» »USING COMPUTER- ESTIMATED PIPESIZE (NON- PRESSURE FLOW) « «< 100 ELEVATION DATA: UPSTREAM(FEET) _ 100.00 DnWN TRFAM (FEET) = 91.23 - FLOW LENGTH (FEET) = 328.60 MANNING' S N = 0.013 DEPTH OF FLOW IN 45.0 INCH PIPE IS 34.8 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 19.83 ESTIMATED PIPE DIAMETER(INCH) = 45.00 NUMBER OF PIPES = 1 PIPE - FLOW(CFS) = 181.64 PIPE TRAVEL TIME (MIN.) = 0.28 Tc(MIN.) = 12.43 LONGEST FLOWPATH FROM NODE - 401.00 TO NODE 405.00 = 2720.20 FEET. ************ t**************** rnw*********** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 405.00 TO NODE 405.00 IS CODE = 81 » » »ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< MAINLINE Tc(MIN) = 12.43 * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.850 SUBAREA LOSS RATE DATA (AMC II): DEVELOPMENT TYPE/ SCS SOIL (ACRES) (INCH /HR) (DECIMAL) SCS 1MAL) � LAND USE GROUP COMMERCIAL A 37.48 0.98 0.10 32 ^T7BAREA AVERAGE PERVIOUS LOSS RATE, Fp (INCH /HR) = 0.98 JEAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.10 - 0 . AREA AREA (ACRES) = 37.48 SUBAREA RUNOFF (CFS) = 126_58 EFFECTIVE AREA (ACRES) = 90.98 AREA- AVERAGED Fm (INCH /PLR) = 0.12 AREA - AVERAGED Fp (INCH /HR) = 0.98 AREA AVERAGED Ap = 0.12 IOTAi, AREA(ACRES) = 90.98 PEAK FLOW RATE(CFS) = 305.71 SUBAREA AREA-AVERAGED RAINFALL DE PTH (INCH) **************************************** * * ** * ** * * * * * * * * * * * * * * * * * * * * * * ** LOW PROCESS FROM NODE 405.00 TO NODE 406.00 IS CODE = 31 » »>COMPUT PIPE -FLOW TRAVEL TIME THRU SUEAREA««< » »>USING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) « «< ELEVATION DATA: UPSTREAM (FEET) = 100.00 DOWNSTREAM (FEET) = 76.02 FLOW LENGTH(FEET) = 781.10 MANNING'S N = 0.013 DEPTH OF FLOW IN 54.0 INCH -PIPE IS 40.4 INCHES PTFE -FLOW VELOCITY(FEET /SEC.) = 23.93 ____ESTIMATED_ PIPE DIAMETER (INCH) = 54.00 NUMBER OF PIPES = 1 • PIPE-FLOW(CFS) = 305.71 DIP� T �'- PIPE TRAVEL TIME(MIN.) = 0.54 Tc(MIN.) = 12.97 LONGEST FLOWPATH FROM NODE 401.00 TO NODE 406.00 = 3501.30 FEET. FLOW PROCESS FROM NODE 406.00 TO NODE 406.00 IS CODE = 81 » »>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< MAINLINE Tc (MIN) = 12.97 _---* YEAR RAINFALL INTENSITY (INCH /HR) = 3.752 SUBAREA LOSS RATE DATA (AMC II) : DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN 'OMMERCIAL A 29.99 0.98 0.10 32 dS IDENTIAL 3 -4 DWELLINGS /ACRE" A 24.91 0.98 0.60 32 j UBAREA AVERAGE PERVIOUS LOSS RATE, Fp (INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.33 SUBAREA AREA(ACRES) = 5 9 0 SUBAREA RUNOFF (CFS) = 169.66 ''TI E AREA(ACRES) = 145.88 AREA - AVERAGED Fm(INCH /F?R) = 0.19 EFFECTIVE - AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.20 TOTAL AREA (ACRES) = 145.88 PEAK FLOW RATE(CFS) = 467.37 SUBAREA AREA - AVERAGED RAINFALL DEPTH (INCH) : 5M = 0.56; 30M = 1.14; 1HR = 1.50; 3HR = 3.04; 6HR = 4.75; 24HR =11.00 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 406.00 TO NODE 407.00 IS CODE = 31 » » >COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA« «< » »>USING COMPUTER - ESTIMATED PIPESIZE (NON- PRESSURE FLOW) « «< ELEVATION DATA: UPSTREAM(FEET) = 100.00 DOWNSTREAM(FEET) = 56.78 FLOW LENGTH(FEET) = 1305.60 MANNING'S N = 0.013 DEPTH OF FLOW IN 63.0 INCH PIPE IS 46.2 INCHES PIPE -FLOW VELOCITY(FEET/SEC.) = 27.45 ESTIMATED PIPE DIAMETER (INCH) = 63.00 NUMBER OF PIPES = 1 PIPE- FLOW(CFS) = 467.37 PIPE TRAVEL TIME(MIN.) = 0.79 TC (MIN.) = 13.76 )NGEST FLOWPATH FROM NODE 401.00 TO NODE 407.00 = 4806.90 FEET. ****************************************** * * ** * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 407.00 TO NODE 407.00 IS CODE = 81 > >>» DDI T ION OF SUBAREA TO MAINLINE PE K LOW «< TrT TTT. TTTT' T'- (MTT\TI - l �F, • - UBARE -A LOSS RATE DATA (AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN .: ESTDENTIAL "3 -4 DWELLINGS /ACRE" A 38.21 0.98 0.60 32 COMMERCIAL A 42.31 0.98 0.10 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = 0.97 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.34 SUBAREA AREA(ACRES) = 80.52 SUBAREA RUNOFF(CFS) = 238.59 E FFECTIVE AREA(ACRES) = 226.40 AREA- AVERAGED Fm(INCH /HR) = 0.24 AREA- AVERAGED Fp (INCH / HR) = 0.98 AREA- AVERAGED Ap = 0.25 TOTAL - AREA - = - - -- -2 -2 6 -. -4 -0 PEA* -FLOW RATE- (C - -FS) - = - 688.74 SUBAREA AREA - AVERAGED RAINFALL DEPTH(INCH): 5M = 0.55; 30M = 1.13; 1HR = 1.49; 3HR = 3.03; 6HR = 4.74; 24HR =11.00 ***********-********************************** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 407.00 TO NODE 408.00 IS CODE = 31 » »>COMPUTE PIPE -FLOW TRAVEL TIME THRU SUBAREA« « < >.» »USING COMPUTER- ESTIMATED PIPESIZE (NON- PRESSURE FLOW) « « < ELEVATION DATA: UPSTREAM (FEET) = 100.00 DOWNSTREAM (FEET) = 60.04 FLOW LENGTH(FEET) = 1318.80 MANNING'S N = 0.013 DEPTH OF FLOW IN 72.0 INCH PIPE IS 56.5 INCHES PIPE -FLOW VELOCITY(FEET /SEC.) = 28.94 TIMATED PIPE DIAMETER (INCH) = 72.00 NUMBER OF PIPES = 1 IPE - FLOW(CFS) = 688.74 IPE TRAVEL TIME (MIN.) = 0.76 Tc(MIN.) = 14.52 LONGEST FLOWPATH FROM NODE 401.00 TO NODE 408.00 = 6125.70 FEET. ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 408.00 TO NODE 408.00 IS CODE = 81 » »>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< MAINLINE Tc(MIN) = 14.52 * 100 YEAR RAINFALL INTENSITY(INCM /HR) = 3.506 SUBAREA LOSS RATE DATA (AMC II): DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS LAND USE GROUP (ACRES) (INCH /HR) (DECIMAL) CN COMMERCIAL A 63.28 0.98 0.10 32 RESIDENTIAL "3 -4 DWELLINGS /ACRE" A 19.49 0.98 0.60 32 SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH /HR) = 0.98 SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.22 SUBAREA AREA(ACRES) = 82.77 SUBAREA RUNOFF(CFS) = 245.39 EFFECTIVE AREA (ACRES) = 309.17 AREA- AVERAGED Fm(INCH/HR) = 0.23 AREA- AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.24 • TOTAL AREA(ACRES) = 309.17 PEAK FLOW RATE(CFS) = 910.72 BAREA AREA - AVERAGED RAINFALL DEPTH (INCH): = 0.55; 30M = 1.13; 1HR = 1.50; 3HR = 3.00; 6HR = 4.66; 24HR =11.00 rLOW PROCESS FROM NODE 408.00 TO NODE 409.00 IS CODE = 31 » >COMPU=E PIPE-FLOW TRAVEL TIME THRU SU7g1R7A«< » » >L T SING COMPUTER - ESTIMATED PIPESIZE (NON - PRESSURE FLOW) ««< ' T,EVAT I ON DATA: UPSTREAM (FEET) = 100.00 DOWNSTREAM(FEET) = 58.15 ,OW LENGTH (FEET) = 1233.50 MANN ING' S N = 0.013 EPTH OF FLOW IN 144.0 INCH PIPE IS 106.5 INCHES PIPE - FLOW VELOCITY(FEET /SEC.) = 10.15 ESTIMATED PIPE DIAMETER (INCH) = 144.00 NUMBER OF PIPES = 1 PIPE - FLOW(CFS) = 910.72 PT TRAVEL TIME (MIN.) = 2.02 Tc(MIN.) = 16.55 LONGEST FLOWPATH FROM NODE 401.00 TO NODE 409.00 = 7359.20 FEET. • **************-******************************* * * ** * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 409.00 TO NODE 409.00 IS CODE = 152 » » >STORE PEAK FLOWRATE TABLE TO A FILE « «< • PEAK FLOWRATE TABLE FILE NAME: A: \0409.pft END OF STUDY SUMMARY: TOTAL AREA(ACRES) = 309.17 TC(MIN.) = 16.55 EFFECTIVE AREA(ACRES) = 309.17 AREA- AVERAGED Fm(INCH /HR)= 0.23 AREA - AVERAGED Fp(INCH /HR) = 0.98 AREA- AVERAGED Ap = 0.24 PEAK FLOW RATE(CFS) = 910..72 END OF RATIONAL METHOD ANALYSIS 1 •