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HomeMy WebLinkAboutHunter's Ridge - Residential AreasRESIDENTIAL AREAS PRELIMINARY HYDROLOGY STUDIES FOR TRACTS 14274, 14275, 14276, 14277, 14570, 14571, 14572 AND 14573 i I PUBLIC WORKB DEPARTMENT J. It KAPP & A�SOCIA1�Sr INC. i J (714) 350-` RETvrZN To Felipe Molinos SENIOR ENGINEERING SERVICES ASSISTANT CITY OF FONTANA 8353 SIERRA AVENUE FONTANA. CA 92335 June 21, 1990 DISCUSSION Preliminary Hydrology Studies for Phase I and Phase II Tracts in Hunter's Ridge were prepared in this office and were based on available information about soils and land use types. Computer program package by AES with reference to 1986 San Bernardino County Hydrology Criterion, prepared specifically for J.P. Kapp & Associates, Inc. was used. RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE (Reference: 1986 SAN BERNARDINO CO. HYDROLOGY CRITERION) Copyright 1983,86,87 Advanced Engineering Soft4are (aes) Ver. 4.1C Release Date: 5/11/87 Serial # I00937 Especially prepared for: J.P. KAPP & ASSOCIATES, INC. ************************* DESCRIPTION OF STUDY ************************ * TRACT NO 14274 * HYDROLOGY STUDY * 25 YEAR STORM FILE NAME: HUNTERS.3 TIME/DATE OF STUDY: 15:47 5/ 2/1990 ------------------------ USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: ----------------------- --*TIME-OF-CONCENTRATION MODEL* -- USER SPECIFIED STORM EVENT(YEAR) = 25.00 SPECIFIED MINIMUM PIPE SIZE(INCH) = 18.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRICTION SLOPE _ .95 *USER -DEFINED LOGARITHMIC INTERPOLATION USED FOR RAINFALL* 10 -YEAR STORM 60 -MINUTE INTENSITY(INCH/HOUR) = 1.060 100 -YEAR STORM 50 -MINUTE INTENSITY(INCH/HOUR) = 1.590 COMPUTED RAINFALL INTENSITY DATA: STORM EVENT = 25.00 1 -HOUR INTENSiTY(INCH/HOUR) = 1.2461 SLOPE OF INTENSITY DURATION CURVE = .7000 FLOW PROCESS FROM NODE 1.00 TO NODE 2.00 IS CODE = 2 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ------------------------ DEVELOPMENT IS SINGLE FAMILY RESIDENTIAL -> 3-4 DWELLINGS/ACRE TC = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 INITIAL SUBAREA FLOW -LENGTH = 1000.00 UPSTREAM ELEVATION = 1680.00 DOWNSTREAM ELEVATION = 1648.00 ELEVATION DIFFERENCE = 32.00 TC = .412*[( 1000.00** 3.00)/( 32.00)]** .20 = 12.998 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.635 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 3-4 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .5320 SUBAREA RUNOFF(CFS) = 19.24 TOTAL AREA(ACRES) = 7.00 PEAK FLOW RATE(CFS) = 19.24 FLOW PROCESS FROM NODE 2.00 TO NODE 3.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< ------------------------- UPSTREAM ELEVATION = 1648.00 DOWNSTREAM ELEVATION = 1638.00 DISTANCE FROM CROWN TO CR OSSFALL GRADEBREAK = 12.00 INTERIOR STREET CROSSFALL(DECIMAL) = 020 OUTSIDE STREET CPOSSFALL(DECIMAL) = .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) _ 35.19 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) _ .66 HALFSTREET FLOODWIDTH(FEET) = 18.87 AVERAGE FLOW VELOCITY(FEET/SEC.) = 4.04 PRODUCT OF DEPTH&VELOCITY = 2.65 STREETFLOW TRAVELTIME(MIN) = 3.30 TC(MIN) = 16.30 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.103 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 3-4 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .5820 SUBAREA AREA(ACRES) = 14.00 SUBAREA RUNOFF(CFS) = 31.77 EFFECTIVE AREA(ACRES) = 21.00 AVERAGED Fm(INCH/HR) _ .582 TOTAL AREA(ACRES) = 21.00 PEAK FLOC/ RATE(CFS) = 47.65 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) = .71 HALFSTREET FLOODWIDTH(FEET) = 20.00 FLOW VELOCITY(FEET/SEC.) = 4.43 DEPTH*VELOCITY = 3.14 **************************************************************************** FLOW PROCESS FROM NODE 3.00 TO NODE 4.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< ------------------------ UPSTREAM ELEVATION = 1638.00 DOWNSTREAM ELEVATION = 1608.00 STREET LENGTH(FEET) = 1200.00 CURB HEIGTH(INCHES) = 8. STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK = 12.00 INTERIOR STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) = .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 72.08 ***STREET FLOWING FULL*** STREETFLOW MODEL RESULTS: NOTE: STREETFLOW EXCEEDS TOP OF CURB. THE FOLLOWING STREETFLOW RESULTS ARE BASED ON THE ASSUMPTION THAT NEGLIBLE FLOW OCCURS OUTSIDE OF THE STREET CHANNEL. THAT IS, ALL FLOW ALONG THE PARKWAY, ETC., IS NEGLECTED. STREET FLOWDEPTH(FEET) = .71 HALFSTREET FLOODWIDTH(FEET) = 20.00 AVERAGE FLOW VELOCITY(FEET/SEC.) = 6.70 PRODUCT OF DEPTH&VELOCITY = 4.74 STREETFLOW TRAVELTIME(MIN) = 2.98 TC(MIN) = 19.28 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.759 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 3-4 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .5820 SUBAREA AREA(ACRES) = 25.00 SUBAREA RUNOFF(CFS) = 48.97 EFFECTIVE AREA(ACRES) = 46.00 AVERAGED Fm(INCH/HR) _ .582 TOTAL AREA(ACRES) = 46.00 PEAK FLOW RATE(CFS) = 90.11 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) = .75 HALFSTREET FLOODWIDTH(FEET) = 20.00 FLOW PROCESS FROM NODE 4.'J0 TO NODE 5.00 I S CODE = 6 --------------------------------------------------- - ------------------------ >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< ----------------------- UPSTREAM ELEVATION = 1608.00 DOWNSTREAM ELEVATION = 1575.00 STREET LENGTH(FEET) = 1600.00 CURB HEIGTH(INCH E S) = 8. STREET HALFWIDTH(FEET) = 20.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK = 12.00 INTERIOR STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 **TRAVELTiME COMPUTED USING MEAN FLOW(CFS) = 105.20 ***STREET FLOWING FULL*** STREETFLOW MODEL RESULTS: NOTE: STREETFLOW EXCEEDS TOP OF CURB. THE FOLLOWING STREETFLOW RESULTS ARE BASED ON THE ASSUMPTION THAT NEGLIBLE FLOW OCCURS OUTSIDE OF THE STREET CHANNEL. THAT IS, ALL FLOW ALONG THE PARKWAY, ETC., IS NEGLECTED. STREET FLOWDEPTH(FEET) _ .81 HALFSTREET FLOODWIDTH(FEET) = 20.00 AVERAGE FLOW VELOCITY(FEET/SEC.) = 7.18 PRODUCT OF DEPTH&VELOCITY = 5.78 STREETFLOW TRAVELTIME(MIN) = 3.72 TC(MIN) = 22.99 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.438 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 3-4 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(J'NCH/HR) _ .5820 SUBAREA AREA(ACRES) = 18.00 SUBAREA RUNOFF(CFS) = 30.07 EFFECTIVE AREA(ACRES) = 64.00 AVERAGED Fm(INCH/HR) _ .582 TOTAL AREA(ACRES) = 64.00 PEAK FLOW RATE(CFS) = 106.93 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .81 HALFSTREET FLOODWIDTH(FEET) = 20.00 FLOW VELOCITY(FEET/SEC.) = 7.30 DEPTH*VELOCITY = 5.87 FLOW PROCESS FROM NODE 5.00 TO NODE 6.00 IS CODE = 3 >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLOW)« <« ---------------------- DEPTH OF FLOW IN 42.0 INCH PIPE IS 30.1 INCHES PIPEFLOW VELOCITY(FEET/SEC.) = 14.5 UPSTREAM NODE ELEVATION = 1575.00 DOWNSTREAM NODE ELEVATION = 1559.00 FLOWLENGTH(FEET) = 1000.00 MANNINGS `J = .013 ESTIMATED PIPE DIAMETER(INCH) = 42.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 106.93 TRAVEL TIME(MIN.) = 1.15 TC(MIN.) = 24.14 FLOW PROCESS FROM NODE 6.00 TO NODE 6.00 IS CODE = 1 ---------------------------------------------------------------------------- >>> >> DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MINUTES) = 24.14 1 01 AL S I HEAM ?RE„( ACHES ) = 64.00 PEAK FLOW P,ATE'SFS) AT CONFLUENCE = 106.93 FLOW PROCESS FPOM NODE 7.00 TO NODE 8.00 IS CODE = 2 ---------------------------------------------------- - ----------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< - ----------------------- DEVELOPMENT IS SINGLE FAMILY RESIDENTIAL -> 5-7 DWELLINGS/ACRE TC = K*[(LENGTHx* 3.00)/(ELEVATION CHANGE)>* .20 INITIAL SUBAREA FLOW -LENGTH = 1000.00 UPSTREAM ELEVATION = 1593.00 DOWNSTREAM ELE`iATION = 1572.00 ELEVATION DIFFERENCE = 21.00 TC = .389*[( 1000.00** 3.00)/( 21.00)1** .20 = 13.351 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.568 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA RUNOFF(CFS) = 6.94 TOTAL AREA(ACRES) = 2.50 PEAK FLOW RATE(CFS) = 6.94 FLOW PROCESS FROM NODE 8.00 TO NODE 6.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA< « << ----------------------- UPSTREAM ELEVATION = 1572.00 DOWNSTREAM ELEVATION = 1559.00 STREET LENGTH(FEET) = 1000.00 CURB HEIGTH(INCHES) = 8. STREET HALFWIDTH(FEET) = 18.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK = 10.00 INTERIOR STREET CROSSFALL(DECIMAL) = .020 OUTSIDE STREET CROSSFALL(DECIMAL) = .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 10.90 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) _ .57 HALFSTREET FLOODWIDTH(FEET) = 14.56 AVERAGE FLOW VELOCITY(FEET/SEC.) = 3.75 PRODUCT OF DEPTH&VELOCITY = 2.13 STREETFLOW TRAVELTIME(MIN) = 4.45 TC(MIN) = 17.80 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.917 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 3.60 SUBAREA RUNOFF(CFS) _ 7.88 EFFECTIVE AREA(ACRES) = 6.10 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 6.10 PEAK FLOW RATE(CFS) = 13.35 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) = .61 HALFSTREET FLOODWIDTH(FEET) = 16.44 FLOW VELOCITY(FEET/SEC.) = 3.82 DEPTH*VELOCITY = 2.32 FLOW PROCESS FROM NODE 6.00 TO NODE 6.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< RAINFALL IN T E:iS=-`( (INCH./HOUR) _ EFFECTIVE STRE,,'Y AREA(ACRES) _ TOTAL STREAM rRE�(ACRES) = 6.10 PEAK FLOW RATE'.. -S) AT CONFLUENCE 2.'2 6.IJ 13.35 FLOW PROCESS FFOM NODE 9.00 TO NODE 10.00 IS CODE = 2 ---------------------------------------------------- - ----------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ---------------- - -------__- DEVELOPMENT IS SINGLE FAMILY RESIDENTIAL -> 5-7 DWELLINGS/ACRE TC = K*[(LENGTHx* 3.00)/(ELEVATION CHAtIGE)]** .20 INITIAL SUBAREA FLOW -LENGTH = 1000.00 UPSTREAM ELEVATION = 1591.00 DOWNSTREAM ELEV?4TION = 1570.00 ELEVATION DIFFERENCE = 21.00 TC = .389*[( 1000.00** 3.00)/( 21.00)]** .20 = 13.351 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.568 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE., Fm(INCH/HR) _ .4850 SUBAREA RUNOFF(CFS) = 7.21 TOTAL AREA(ACRES) = 2.60 PEAK FLOW RATE(CFS) = 7,21 FLOW PROCESS FROM NODE 10.00 TO NODE 6.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< ----------------------- UPSTREAM ELEVATION = 1570.00 DOWNSTREAM ELEVATION = 1559.00 STREET LENGTH(FEET) = 770.00 CURB HEIGTH(INCHES) = 8. STREET HALFWIDT�(FEET) = 18.00 DISTANCE FROM CROWN TO CRCSSFALL GRADEBREAK = 10.00 INTERIOR STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 9.65 STREETFLOW MODEL RESULTS: STREET F_OWDEPTH(FEET) _ .54 HALFSTREET FLOODWIDTH(FEET) = 13.31 AVERAGE FLOW VELOCITY(FEET/SEC.) = 3.77 PRODUCT OF DEPTH&VELOCITY = 2.05 STREETFLOW TRAVELTIME(MIN) = 3.41 TC(MIN) = 16.76 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.043 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 2.10 SUBAREA RUNOFF(CFS) = 4.83 EFFECTIVE AREA(ACRES) = 4.70 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 4.70 PEAK FLOW RATE(CFS) = 10.82 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .56 HALFSTREET FLOODWIDTH(FEET) = 13.94 FLOW VELOCITY(FEET/SEC.) = 3.96 DEPTH*VELOCITY = 2.21 FLOW PROCESS FRCM NODE 6.00 TO NODE 6.00 IS CODE = 1 ---------------------------------------------------------------------------- ----------------------- CONFLUENCE VALUES USED FOR INDEPENDENT 'STREAM 3 ARE: TIME OF CONCEJTRATION(MINUTES) = 16.76 RAINFALL INTENSITY (INCH./HOUR) = 3.04 EFFECTIVE STREAM AREA(ACRES) = 4.70 TOTAL STREAM AREA(ACRES) = 4.70 PEAK FLOW RATE(CFS) AT CONFLUENCE = 10.82 CONFLUENCE INFORMATION: STREAM PEAK FLOW TIME INTENSIT`( FM EFFECTIVE NUMBER RATE(CFS) (MIN.) (INCH/HOUR) (IN/HR) AREA(ACRES) -------------------------------------------------------------- 1 106.93 24.14 2.357 .58 64.00 2 13.35 17.80 2.917 .49 6.10 3 10.82 16.76 3.043 .49 4.70 RAINFALL INTENSIT`( AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 3 STREAMS. SUMMARY RESULTS: STREAM CONFLUENCE EFFECTIVE NUMBER i(CFS) AREA(ACRES) --------------------------------------------- 1 125.12 74.80 2 127.37 57.99 3 126.96 54.86 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 127.37 TIME(MINUTES) = 17.801 EFFECTIVE AREA(ACRES) = 57.99 TOTAL AREA(ACRES) = 74.80 FLOW PROCESS FROM NODE 6.00 TO NODE 6.00 IS CODE = 8 !Z ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ------------------------ 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.917 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 6.40 SUBAREA RUNOFF(CFS) = 14.01 EFFECTIVE AREA(ACRES) = 64.39 AVERAGED Fm(INCH/HR) _ .556 TOTAL AREA(ACRES) = 81.20 PEAK FLOW RATE(CFS) = 136.81 TC(MIN) = 17.30 FLOW PROCESS FROM NODE 6.00 TO NODE 6.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ----------------------- 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.917 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 1.70 SUBAREA RUNOFF(CFS) = 3.72 EFFECTIVE AREA(ACRES) = 66.09 AVERAGED Fm(INCH/HR) _ .554 TOTAL AREA(ACRES) = 82.90 PEAK FLOW RATE(CFS) = 140.53 TC(MIN) = 17.80 i)) J V W0MKU I C VoNtrLUO I MhV tL I iMt I MMU oUbAhtXA : C < < >>>>>USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLn& <<<< --------------------- DEPTH OF FLOW 14 45.0 INCH PIPE IS 31.7 INCHES PIPEFLOW VELOITY(FEET/SEC.) = 16.9 UPSTREAM NODE ELEVATION = 1559.00 DOWNSTREAM NODE ELEVATION = 1558.20 FLOWLENGTH(FEET = 40.00 MANNINGS N = .013 ESTIMATED PIPE DIAMETER(INCH) = 45.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 140.53 TRAVEL TIME(MIN.) = .04 TC(MIN.) = 17.84 FLOW PROCESS FROM NODE 11.00 TO NODE 11.00 IS CODE = 1 ---------------------------------------------------- ------------------------ >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< ---------------------- CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MINUTES) = 17.84 RAINFALL INTENSITY (INCH./HOUR) = 2.91 EFFECTIVE STREAM AREA(ACRES) = 66.09 TOTAL STREAM AREA(ACRES) = 82.90 PEAK FLOW RATE(CFS) AT CONFLUENCE = 140.53 FLOW PROCESS FROM NODE 12.00 TO NODE 13.00 IS CODE = 2 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ----------------------- NATURAL AVERAGE COVER TC = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 INITIAL SUBAREA FLOW -LENGTH = 850.00 UPSTREAM ELEVATION = 1603.00 DOWNSTREAM ELEVATION = 1585.00 ELEVATION DIFFE=RENCE = 18.00 TO = .706*[( 850.00** 3.00)/( 18.00)1** .20 = 22.667 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.463 SOIL CLASSIFICATION IS "A'' NATURAL AVERAGE COVER "GRASS" SUBAREA LOSS RATE, Fm(INCH/HR) _ .8200 SUBAREA RUNOFF(CFS) = 13.31 TOTAL AREA(ACRES) = 9.00 PEAK FLOW RATE(CFS) = 13.31 **************************************************************************** FLOW PROCESS FROM NODE 13.00 TO NODE 14.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< -------------------- UPSTREAM ELEVATION = 1585.00 DOWNSTREAM ELEVATION = 1563.00 STREET LENGTH(FEET) = 1000.00 CURB HEIGTH(INCHES) = 8. STREET HALFWIDTH(FEET) = 18.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK = 10.00 INTERIOR STREET CROSSFALL(DECIMAL) = .020 OUTSIDE STREET CROSSFALL(DECIMAL) = .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVELTIME COMPUTED STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) USING MEAN FLOW(CFS) = .61 17.56 1 1-- - V" I I I I U t"" V V l I I - J. l4 J STREETFLOW TRAVELTIME(MIN) = 3.31 TC(MIN) = 25.98 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.239 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(It+CH/HR) _ .4850 SUBAREA AREA(ACRES) = 5.40 SUBAREA RUNOFF(CFS) = 8.52 EFFECTIVE AREA(ACRES) = 14.40 AVERAGED Fm(INCH/HR) _ .694 TOTAL AREA(ACRES) = 14.40 PEAK FLOW RATE(CFS) = 20.01 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .63 HALFSTREET FLOODWIDTH(FEET) = 17.69 FLOW VELOCITY(FEET/SEC.) = 5.11 DEPTH*VELOCITY = 3.23 --FLOW PROCESS FROM NODE 14.00 TO NODE 14.00 IS CODE = 8 ---------------------------------------------- --------------- D----- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.239 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(LICH/HR) _ .4850 SUBAREA AREA(ACRES) = 4.60 SUBAREA RUNOFF(CFS) = 7.26 EFFECTIVE AREA(ACRES) = 19.00 AVERAGED Fm(INCH/HR) _ .644 TOTAL AREA(ACRES) = 19.00 PEAK FLOW RATE(CFS) = 27.27 TC(MIN) = 25.98 FLOW PROCESS FROM NODE 14.00 TO NODE 11.00 IS CODE = 3 >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLCW)<<<<< - -------------- DEPTH OF FLOW IN 24.0 INCH PIPE IS 18.6 INCHES PIPEFLOW VELOCiTY(FEET/SEC.) = 10.5 UPSTREAM NODE ELEVATION = 1563.00 DOWNSTREAM NODE ELEVATION = 1558.20 FLOWLENGTH(FEE-) = 280.00 MANNINGS N = .013 ESTIMATED PIPE DIAMETER(INCH) = 24.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 27.27 TRAVEL TIME(MIN.) _ .45 TC(MIN.) = 26.43 FLOW PROCESS FRCM NODE 11.00 TO NODE 11.00 IS CODE = 1 >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MINUTES) = 26.43 RAINFALL INTENSITY (INCH./HOUR) = 2.21 EFFECTIVE STREAM AREA(ACRES) = 19.00 TOTAL STREAM AREA(ACRES) = 19.00 PEAK FLOW RATE(CFS) AT CONFLUENCE = 27.27 CONFLUENCE INFORMATION: STREAM PEAK FLOW TIME INTENSITY FM EFFECTIVE NUMBER RATE(CFS) (MIN.) (INCH/HOUR) (IN/HR) AREA(ACRES) -------------------------------------------------------------- RAINFALL INTEIlSI'Y AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. SUMMARY RESULTS: STREAM CONFLUE14CE EFFECTIVE NUMBER Q(CFS) AREA(ACRES) --------------------------------------------- 1 167.16 78.91 2 126.07 85.09 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 167.16 TIMEiMINUTES) = 17.840 EFFECTIVE AREA(ACRES) = 78.91 TOTAL AREA(ACRES) = 101.90 FLOW PROCESS FROM NODE 11.00 TO NODE 15.00 IS CODE = 3 >>>>> COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<(<< >>>>>USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLOW)<<<<< DEPTH OF FLOW IN 48.0 INCH PIPE IS 38.3 INCHES PIPEFLOW VELOCITY(FEET/SEC.) = 15.6 UPSTREAM NODE ELEVATION = 1558.20 DOWNSTREAM NODE ELEVATION = 1555.95 FLOWLENGTH(FEET) = 150.00 MANNINGS N = .013 ESTIMATED PIPE DIAMETER(INCH) = 48.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 167.16 TRAVEL TIME(MIN.) _ .16 TC(MIN.) = 18.00 END OF STUDY SUMMARY: TOTAL AREA(ACRES) = 101.90 EFFECTIVE AREA(ACRES) = 78.91 PEAK FLOW RATE(CFS) = 167.16 END OF RATIONAL METHOD ANALYSIS RAT IGNAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE (Reference: 1986 SAN BERNARDINO CO. HYDROLOGY CRITERION) Copyriant 1983,86,87 Advanced Engineering Software (aes) Ver. 4.1C Release Date: 5/11/87 Serial # 100937 Especially prepared for: J.P. KAPP & ASSOCIATES, INC. ************************** DESCRIPTION OF STUDY************************ * TRACT NO. 14275 * HYDROLOGY STUDY * 25 YEAR STORM ************************************************************************** FILE NAME: HUNTERS.2 TIME/DATE OF STUDY: 11:16 5/ 3/1990 ----------------------------- USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATICN: ----------------------- --*TIME-OF-CONCENTRATION MODEL* -- USER SPECIFIED STORM EVENT(YEAR) = 25.00 SPECIFIED MINIMUM PIPE SIZE(INCH) = 18.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRICTION SLOPE _ .95 *USER -DEFINED LOGARITHMIC INTERPOLATION USED FOR RAINFALL* 10 -YEAR STORM 60 -MINUTE INTENSITY(INCH/HOUR) = 1.060 100 -YEAR STORM 60 -MINUTE INTENSITY(INCH/HOUR) = 1.590 COMPUTED RAINFALL INTENSITY DATA: STORM EVENT = 25.00 1 -HOUR INTENSITY(INCH/HOUR) = 1.2461 SLOPE OF INTENSITY DURATION CURVE _ .7000 FLOW PROCESS FROM NODE 6.10 TO NODE 6.20 IS CODE = 2 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ------------------------ NATURAL AVERAGE COVER TC = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 INITIAL SUBAREA FLOW -LENGTH = 410.00 UPSTREAM ELEVATION = 1585.00 DOWNSTREAM ELEVATION = 1575.00 ELEVATION DIFFERENCE = 10.00 TC = .706*[( 410.00** 3.00)/( 10.00)]** .20 = 16.462 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.081 SOIL CLASSIFICATION IS "A" NATURAL AVERAGE COVER "GRASS" SUBAREA LOSS RATE, Fm(INCH/HR) _ .8200 SUBAREA RUNOFF(CFS) = 19.54 TOTAL AREA(ACRES) = 9.60 PEAK FLOW RATE(CFS) = 19,54 FLOW PROCESS FROM NODE 6.20 TO NODE 7.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< ----------------------- UPSTREAM ELEVATION = 1575.00 DOWNSTREAM ELEVATION = 1565.00 DISTANCE FROM -DOWN TO CROSSFALL GRADEBREAK = 10.00 INTERIOR STREE7 ::ROSSFALL(DECIMAL) _ .020 OUTSIDE STREET :ROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 22.92 ***STREETFLOW SPLITS OVER STREET -CROWN*** FULL DEPTH(FEET) _ .64 FLOODWIDTH(FEET) = 18.00 FULL HALF -STREET VELOCITY(FEET/SEC.) = 5.31 SPLIT DEPTH(FEET) _ .28 SPLIT FLOODWIDTH(FEET) = 4.06 SPLIT VELOCITY(FEET/SEC.) = 3.16 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) _ .64 HALFSTREET FLOODWIDTH(FEET) = 18.00 AVERAGE FLOW VELOCITY(FEET/SEC.) = 5.31 PRODUCT OF DEPTH&VELOCITY = 3.39 STREETFLOW TRAVELTIME(MIN) = 1.41 TC(MIN) = 17.87 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.909 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4250 SUBAREA AREA(ACRES) = 3.10 SUBAREA RUNOFF(CFS) = 6.76 EFFECTIVE AREA(ACRES) = 12.70 AVERAGED Fm(INCH/HR) _ .738 TOTAL AREA(ACRES) = 12.70 PEAK FLOW RATE(CFS) = 24.81 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .54 HALFSTREET FLOODWIDTH(FEET) = 18.00 FLOW VELOCITY(FEET/SEC.) = 5.31 DEPTH*VELOCITY = 3.39 FLOW PROCESS FROM NODE 8.00 TO NODE 7.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.909 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 1.90 SUBAREA RUNOFF(CFS) = 4.14 EFFECTIVE AREA(ACRES) = 14.60 AVERAGED Fm(INCH/HR) _ .705 TOTAL AREA(ACRES) = 14.60 PEAK FLOW RATE(CFS) = 28.95 TC(MIN) = 17.87 FLOW PROCESS FROM NODE 7.00 TO NODE 5.10 IS CODE = 3 >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLOW)<<<<< ------------------------- DEPTH OF FLOW IN 27.0 INCH PIPE IS 17.5 INCHES PIPEFLOW VELOCITY(FEET/SEC.) = 10.6 UPSTREAM NODE ELEVATION = 1565.00 DOWNSTREAM NODE ELEVATION = 1553.30 FLOWLENGTH(FEET) = 720.00 MANNINGS N = .013 ESTIMATED PIPE DIAMETER(INCH) = 27.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 28.95 TRAVEL TIME(MIN.) = 1.13 TC(MIN.) = 19.00 -------------- >>>>>DESIGNATE-_NDEPENDENT STREAM FOR CONFLUENCE<<<<-- ----------------------- CONFLUENCE VALUES USED FOR INDEPENDEtJT STREAM 1 ARE: TIME OF CONCENTRATION(MINUTES) = 19.00 RAINFALL INTENSITY (INCH./HOUR) = 2.79 EFFECTIVE STREAM AREA(ACRES) = 14.60 TOTAL STREAM AREA(ACRES) = 14.60 PEAK FLOW RATE(CFS) AT CONFLUENCE = 28.95 FLOW PROCESS FROM NODE 1.00 TO NODE 2.00 IS CODE = 2 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ------------------------- DEVELOPMENT IS SINGLE FAMIL`( RESIDENTIAL -> 5-7 DWELLINGS/ACRE TC = K*E(LENGTHM* 3.00)/(ELEVATION CHANGE)]** .20 INITIAL SUBAREA. FLOW -LENGTH = 750.00 UPSTREAM ELEVATION = 1573.00 DOWNSTREAM ELEVATION = 1560.00 ELEVATION DIFFERENCE = 13.00 TC = .389*E( 750.00** 3.00)/( 13.00)]** .20 = 12.365 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.764 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(4NCH/HR) _ .4850 SUBAREA RUNOFF(CFS) = 8.26 TOTAL AREA(ACRES) = 2.80 PEAK FLOW RATE(CFS) = 8.26 FLOW PROCESS FROM NODE 2.00 TO NODE 3.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< ------------------------- UPSTREAM ELEVATION = 1560.00 DOWNSTREAM ELEVATION = 1555.00 STREET LENGTH(FEET) = 450.00 CURB HEIGTH(INCHES) STREET HALFWIDTH(FEET) = 18.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK = 10.00 INTERIOR STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) _ .57 HALFSTREET FLOODWIDTH(FEET) = 14.56 AVERAGE FLOW VELOCITY(FEET/SEC.) = 3.46 PRODUCT OF DEPTH&VELOCITY = 1.97 STREETFLOW TRAVELTIME(MIN) = 2.16 TC(MIN) = 14.53 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.363 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(I'q'CH/HR) _ .4850 SUBAREA AREA(ACRES) = 1.40 SUBAREA RUNOFF(CFS) = 3.63 EFFECTIVE AREA(ACRES) = 4.20 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 4.20 PEAK FLOW RATE(CFS) _ 10.88 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .58 HALFSTREET FLOODWIDTH(FEET) = 15.1= FLOW VELOCITY(FEET/SEC.) = 3.51 DEPTH*VELOCITY = 2._�4 **X*X:xxx*******xx*************x* FLOW PROCESS -POM NODE 3.00 TO NODE 3.00 IS CODE = 8 ---------------------------------------------------- ------------------------ >>>>>ADDITION SF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAI4FALL INTENSITY(INCH/HOUR.) = 3.363 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> -7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(14CH/HR) _ .4a50 SUBAREA AREA(ACRES) = 1.80 SUBAREA RUNOFF(CFS) = 4.66 EFFECTIVE AREA(ACRES) = 6.00 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 6.00 PEAK FLOW RATE(CFS) = 15.54 TC(MIN) = 14.53 FLOW PROCESS FROM NODE 3.00 TO NODE 5.10 IS CODE = 3 >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLOW)<<<<< DEPTH OF OF FLOW IN 24.0 INCH PIPE IS 15.7 INCHES PIPEFLOW VELOCITY(FEET/SEC.) = 7.1 UPSTREAM NODE ELEVATION = 1555.00 DOWNSTREAM NODE ELEVATION = 1553.30 FLOWLENGTH(FEET) = 200.00 MANNINGS 1 = .013 ESTIMATED PIPE DIAMETER(INCH) = 24.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 15.54 TRAVEL TIME(MIN.) _ .47 TC(MIN.) = 15.00 FLOW PROCESS FROM NODE 5.10 TO NODE 5.10 IS CODE = 1 >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< ---------------------- CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MINUTES) = 15.00 RAINFALL INTENSITY (INCH./HOUR) = 3.29 EFFECTIVE STREAM AREA(ACRES) = 6.00 TOTAL STREAM AREA(ACRES) = 6.00 PEAK FLOW RATE(CFS) AT CONFLUENCE = 15.54 CONFLUENCE INFORMATION: STREAM PEAK FLOW TIME INTENSITY FM EFFECTIVE NUMBER RATE"CFS) (MIN.) (INCH/HOUR) (IN/HR) AREA(ACRES) -------------------------------------------------------------- 1 28.95 19.00 2.787 .71 14.60 2 15.54 15.00 3.289 .48 6.00 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FCRMULA USED FOR 2 STREAMS. SUMMARY RESULTS: STREAM CONFLUENCE EFFECTIVE NUMBER Q(CFS) AREA(ACRES) --------------------------------------------- 1 41.71 20.60 2 43.90 17.52 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 43.90 TIME(MINUTES) = 14.998 EFFECTIVE AREA(ACRES) = 17.52 TOTAL AREA(ACRES) = 20.60 FLOW PROCESS FRO NODE 5.10 TO NODE 5.00 IS CODE = 3 >>>>>COMPUTE P=R -FLOW TRAVELTIME THRU SJBAREA<<<<< >>>>>USING COMPO TER- ESTIMATED PIPESIZE (NON -PRESSURE FLOWW)<<<<< ----------------------- DEPTH OF FLOW Ik 30.0 INCH PIPE IS 21.5 INCHES PIPEFLOW VELOC17Y(FEET/SEC.) = 11.7 UPSTREAM NODE ELEVATION = 1553.30 DOWNSTREAM NODE ELEVATION = 1552.00 FLOWLENGTH(FEET) = 80.00 MANNINGS J = .013 ESTIMATED PIPE DIAMETER(INCH) = 30.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 43.90 TRAVEL TIME(MIN.) _ .11 TC(MIN.) = 15.11 FLOW PROCESS FROM NODE 7.00 TO NODE 5.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.271 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4250 SUBAREA AREA(ACRES) = 2.20 SUBAREA RUNOFF(CFS) = 5.52 EFFECTIVE AREA KCRES) = 19.72 AVERAGED Fm(INCH/HR) _ .614 TOTAL AREA(ACRES) = 22.80 PEAK FLOW RATE(CFS) = 47.17 TC(MIN) = 15.1' FLOW PROCESS FROM NODE 5.00 TO NODE 5.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE =NDEPENDENT STREAM FOR CONFLUENCE<<<<< CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MINUTES) = 15.1! RAINFALL INTENSITY (INCH./HOUR) = 3.27 EFFECTIVE STREAM AREA(ACRES) = 19.72 TOTAL STREAM AREA(ACRES) = 22.80 PEAK FLOW RATE(CFS) AT CONFLUENCE = 47.17 FLOW PROCESS FROM NODE 9.10 TO NODE 9.00 IS CODE = 2 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ----------------------- DEVELOPMENT IS SINGLE FAMILY RESIDENTIAL -> 5-7 DWELLINGS/ACRE TC = K*[(LENGTHx* 3.00)/(ELEVATION CHANGE)]** .20 INITIAL SUBAREA FLOW -LENGTH = 750.00 UPSTREAM ELEVATION = 1573.00 DOWNSTREAM ELEVATION = 1560.00 ELEVATION DIFFERENCE = 13.00 TC = .389*[( 750.00** 3.00)/( 13.30)1** .20 = 12.365 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.764 SOIL CLASSIFICATION IS "A'' RESIDENTIAL 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA RUNOFF(CFS) = 9.44 TOTAL AREA(ACRES) = 3.20 PEAK FLOW RATE(CFS) = 9.44 FLOW PROCESS P45M NODE 9.00 TO NODE 5.00 IS CODE = 6 --------------------------------------------------- ------------------------- >>>>>COMPUTE STPEETFLOW TRAVELTIME THRU SUBAREA<<<<< UPSTREAM ELEVAT:ON ELEVA.T ON = 1560.00 DOWNSTREAM ELEVATION = 1552.00 STREET LENGTH(FEET) = 530.00 CURB HEIGTH(INCH E S) = 8. STREET HALFWIDT(FEET) = 18.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBPEAK = 10.00 INTERIOR STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 13.48 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) _ .59 HALFSTREET FLOODWIDTH(FEET) = 15.81 AVERAGE FLOW VELOCITY(FEET/SEC.) = 4.10 PRODUCT OF DEPTH&VELOCIT`{ = 2.44 STREETFLOW TRAVELTIME(MIN) = 2.16 TC(MIN) = 14.52 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.364 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 3.10 SUBAREA RUNOFF(CFS) = 8.03 EFFECTIVE AREA(ACRES) = 6.30 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 6.30 PEAK FLOW RATE(CFS) = 16.32 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .62 HALFSTREET FLOODWIDTH(FEET) = 17.06 FLOW VELOCITY(FEET/SEC.) = 4.41 DEPTH*VELOCITY = 2.73 FLOW PROCESS FROM NODE 5.00 TO NODE 5.00 IS CODE = 1 >>>>>DESIGNATE =NDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< ------------------------- CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MINUTES) = 14.52 RAINFALL INTENSITY (INCH./HOUR) = 3.35 EFFECTIVE STREAM AREA(ACRES) = 6.30 TOTAL STREAM AREA(ACRES) = 6.30 PEAK FLOW RATE(CFS) AT CONFLUENCE = 16.32 CONFLUENCE INFORMATION: STREAM PEAK FLOW TIME INTENSITY FM EFFECTIVE NUMBER RATE(CFS) (MIN.) (INCH/HOUR) AN/HR) AREA(ACRES) -------------------------------------------------------------- 1 47.17 15.11 3,271 .61 19.72 2 16.32 14.52 3.364 .48 6.30 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. SUMMARY RESULTS: STREAM CONFLUENCE EFFECTIVE NUMBER Q(CFS) AREA(ACRES) --------------------------------------------- 1 62.97 26.02 2 63.23 25.25 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 63.23 TIME(YINUTES) _ 14.521 FLOW PROCESS FROM NODE 11.00 TO NODE 12.00 IS CODE = 2 ----------------------------------------------------- ----------------------- Q >>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< - ----------------------- DEVELOPMENT IS SINGLE FAMILY RESIDENTIAL -> 5-7 DWELLINGS/ACRE TC = K*E(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 INITIAL SUBAREA FLOW -LENGTH = 1000.00 UPSTREAM ELEVATION = 1579.00 DOWNSTREAM ELEVATION = 1557.00 ELEVATION DIFFERENCE = 22.00 TC = .389*E( 1000.00** 3.00)/( 22.00)]** .20 = 13.227 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.591 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA RUNOFF(CFS) = 5.87 TOTAL AREA(ACRES) = 2.10 PEAK FLOW RATE(CFS) = 5,87 FLOW PROCESS FROM NODE 12.00 TO NODE 13.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< ----------------------- UPSTREAM ELEVATION = 1557.00 DOWNSTREAM ELEVATION = 1542.00 STREET LENGTH(FEET) = 750.00 CURB HEIGTH(INCHES) = 8. STREET HALFWIDTH(FEET) = 18.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK = 10.00 INTERIOR STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 9.33 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) _ .51 HALFSTREET FLOODWIDTH(FEET) = 11.44 AVERAGE FLOW VELOCITY(FEET/SEC.) = 4.45 PRODUCT OF DEPTH&VELOCITY = 2.25 STREETFLOW TRAVELTIME(MIN) = 2.81 TC(MIN) = 16.04 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.138 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 2.90 SUBAREA RUNOFF(CFS) = 6.92 EFFECTIVE AREA(ACRES) = 5.00 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 5.00 PEAK FLOW RATE(CFS) = 11.94 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .54 HALFSTREET FLOODWIDTH(FEET) = 13.31 FLOW VELOCITY(FEET/SEC.) = 4.66 DEPTH*VELOCITY = 2.54 **************************************************************************** FLOW PROCESS FROM NODE 13.00 TO NODE 13.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ----------------------------- 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.138 SOIL CLASSIFICATION IS "A'' EFF40 1 2 v c - v. vv AVERAGED Fm(:�CH/HR) _ .485 TOTAL AREA(ACRES) = 6.00 PEAK FLOW RATE CFS ) = 14.S3 TC(MIN) = 16.04 FLOW PROCESS FROM NODE 13.00 TO NODE 17.00 IS CODE = 3 >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER- ESTIMATED PIPESIZE (NON -PRESSURE FLOW <<<<< ------------------------ DEPTH OF FLOW IN 21.0 INCH PIPE IS 15.3 INCHES PIPEFLOW VELOCITY(FEET/SEC.) = 7.6 UPSTREAM NODE ELEVATION = 1542.00 DOWNSTREAM NODE ELEVATION = 1541.00 FLOWLENGTH(FEET) = 90.00 MANNINGS N = .013 ESTIMATED PIPE DIAMETER(INCH) = 21.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 14.33 TRAVEL TIME(MIN.) = .20 TC(MIN.) = 16.23 FLOW PROCESS FROM NODE 16.00 TO NODE 16.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.111 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, FM OKCH/HR) _ .0850 SUBAREA AREA(ACRES) = 1.70 SUBAREA RUNOFF(CFS) = 4,02 EFFECTIVE AREA(ACRES) = 7.70 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 7.70 PEAK FLOW RATE(CFS) = 18.20 TC(MIN) = 16.23 FLOW PROCESS FROM NODE 16.00 TO NODE 16.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MINUTES) = 16.23 RAINFALL INTENSITY (INCH./HOUR) = 3.11 EFFECTIVE STREAM AREA(ACRES) = 7.70 TOTAL STREAM AREA(ACRES) = 7.70 PEAK FLOW RATE(CFS) AT CONFLUENCE = 18.20 FLOW PROCESS FROM NODE 14.00 TO NODE 15.00 IS CODE = 2 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ------------------ DEVELOPMENT IS SINGLE FAMILY RESIDENTIAL -> 5-7 DWELLINGS/ACRE TC = K*E(LENGTH** 3.00)/(ELEVATION CHANGE)> * .20 INITIAL SUBAREA FLOW -LENGTH = 1000.00 UPSTREAM ELEVATION = 1579.00 DOWNSTREAM ELEVATION = 1561.00 ELEVATION DIFFERENCE = 18.00 :JU1L ULHo0irl-t-, 1UIN 1v H RESIDENTIAL-. 5-7 DWELLINGS/ACRE SUBAREA RUNGFP(27S) = 7.85 TOTAL AREA(ACPES) = 2.90 SUBAREA. LOSS RATE , Fm( INCH/HR ) _ PEAK FLOW RATE(CFS) = 7,85 485 FLOW PROCESS FROM NODE 15.00 TO NODE 17.00 IS CODE = 6 ---------------------------------------------------- ------------------------ >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< --------------- UPSTREAM ELEVATION = 1561.00 DOWNSTREAM ELEVATION = 1541.00 STREET LENGTH(FEET) = 1000.00 CURB HEIGTH(INCHE S) = 8. STREET HALFWIDTH(FEET) = 18.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK = 10.00 INTERIOR STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = **TRAVEL -IME COMPUTED USING MEAN FLOW(CFS) = 11.63 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) _ .54 HALFSTREET FLOODWIDTH(FEET) = 13.31 AVERAGE FLOW VELOCITY(FEET/SEC.; = 4.54 PRODUCT OF DEPTH&VELOCITY = 2.47 STREETFLOW TRAVELTIME(MIN) = 3.67-C(MIN) = 17.44 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.959 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) SUBAREA AREA(ACRES) = 3.40 SUBAREA RUNOFF(CFS) = 7.57 EFFECTIVE AREA(ACRES) = 6.30 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 6.30 PEAK FLOW RATE(CFS) = 14,03 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .57 HALFSTREET FLOODWIDTH(FEET) = 14.56 FLOW VELOCITY(FEET/SEC.) = 4.82 DEPTH*VELOCITY = 2.75 FLOW PROCESS FROM NODE 17.00 TO NODE 17.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUE& <<<< -------------------- CONFLUENCE VAL'U'ES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MINUTES) = 17.44 RAINFALL INTENSITY (INCH./HOUR) = 2.96 EFFECTIVE STREAM AREA(ACRES) = 6.30 TOTAL STREAM AREA(ACRES) = 6.30 PEAK FLOW RATE(CFS) AT CONFLUENCE = 14.03 CONFLUENCE INFORMATION: STREAM PEAK FLOW TIME INTENSITY FM EFFECTIVE NUMBER RATE(CFS) (MIN.) (INCH/HOUR) (IN/HR) AREA(ACRES) -------------------------------------------------------------- 1 18.20 16.23 3.111 .49 7,70 2 14.03 17.44 2.959 .49 6.30 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. SUMMARY RESULTS: 1 32.6 13.56 2 3i.1S 14.00 COMPUTED CONFLUENCE ESTIMATES ARE AS FGLLOWS: PEAK FLOW RATE(CFS) = 32.06 TIME(MINUTES) = 16 4 EFFECTIVE AREA(ACRES) = 13.56 TOTAL AREA(ACRES) = 14.00 ------------------------ END OF STUDY SUMMARY: TOTAL AREA(ACRES) = 14.00 EFFECTIVE AREA(ACRES) = 13.56 PEAK FLOW RATE(CFS) - 32.06 END OF RATIONAL METHOD ANALYSIS RATIONAL METHOD HYDROLOGY CO�MPUTER PROGRAM PACKAGE (Reference: 1986 SAN BERNARDINO CO. HYDROLOGY CRITERION) Copyright 1983,86,87 Advanced Engineering Software (aes) Ver. 4.1C Release Date: 5/11/87 Serial # 100937 Especially prepared for: J.P. KAPP & ASSOCIATES, INC. ************************ DESCRIPTION CF STUDY ************************ * TRACT NO. 14276 * HYDROLOGY STUDY * 25 YEAR STORM FILE NAME: HUNTERS.1 TIME/DATE OF STUDY: 10:23 5/ 7/1990 --------------- USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: --*TIME-OF-CONCENTRATION MODEL* -- USER SPECIFIED STORM EVENT(YEAR) = 25.00 SPECIFIED MINIMUM PIPE SIZE(INCH) = 18.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRICTION SLOPE _ .95 *USER -DEFINED LOGARITHMIC INTERPOLATION USED FOR RAINFALL* 10 -YEAR STORM 60 -MINUTE INTENSITY(INCH%HOUR) = 1.060 100 -YEAR STORM 60 -MINUTE INTENSITY(INCH/HOUR) = 1.590 COMPUTED RAINFALL INTENSITY DATA: STORM EVENT = 25.00 1 -HOUR INTENSITY(INCH/HOUR) = 1.2461 SLOPE OF INTENSITY DURATION CURVE _ .7000 **************************************************************************** FLOW PROCESS FROM NODE 1.00 TO NODE 2.00 IS CODE = 2 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ------------ DEVELOPMENT IS SINGLE FAMILY RESIDENTIAL -> 5-7 DWELLINGS/ACRE TC = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 INITIAL SUBAREA FLOW -LENGTH = 1000.00 UPSTREAM ELEVATION = 1550.00 DOWNSTREAM ELEVATION = 1530.00 ELEVATION DIFFERENCE = 20.00 TC = .389*[( 1000.00** 3.00)/( 20.00)]** .20 = 13.482 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.543 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA RUNOFF(CFS) = 8.53 TOTAL AREA(ACRES) = 3.10 PEAK FLOW RATE(CFS) FLOW PROCESS FROM NODE 2.00 TO NODE 3.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< UPSTREAM ELEVATION = 1530.00 DOWNSTREAM ELEVATION = 1517.00 DISTANCE FROM CROWN TO CROSSFALL GRADEEREAK = 10.00 INTERIOR STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBEF OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 12.48 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) _ .58 HALFSTREET FLOODWIDTH(FEET) = 15.19 AVERAGE FLOW VELOCITY(FEET/SEC.) = 4.03 PRODUCT OF DEPTH&VELOCITY = 2.35 STREETFLOW TRAVELTIME(MIN) = 3.72 TC(MIN) = 17.20 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.988 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 3.50 SUBAREA RUNOFF(CFS) = 7.88 EFFECTIVE AREA(ACRES) = 6.60 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 6.60 PEAK FLOW RATE(CFS) = 14.87 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .51 HALFSTREET FLOODWIDTH(FEET) = 16.44 FLOW VELOCITY(FEET/SEC.) = 4.26 DEPTH*VELOCITY = 2.58 FLOW PROCESS FROM NODE 3.00 TO NODE 3.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< -------------- CONFLUENCE VAL'U'ES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MINUTES) = 17.20 RAINFALL INTENSITY (INCH.%HOUR) = 2.99 EFFECTIVE STREAM AREA(ACRES) = 6.60 TOTAL STREAM AREA(ACRES) = 6.60 PEAK FLOW RATE(CFS) AT CONFLUENCE = 14.87 FLOW PROCESS FROM NODE 4.00 TO NODE 5.00 IS CODE = 2 ---------------------------------------------------------------------------- >>>>>RATIONAL WETHOD INITIAL SUBAREA ANALYSIS<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- DEVELOPMENT IS SINGLE FAMILY RESIDENTIAL -> 5-7 DWELLINGS/ACRE TC = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 INITIAL SUBAREA FLOW -LENGTH = 1000.00 UPSTREAM ELEVATION = 1546.00 DOWNSTREAM ELEVATION = 1524.00 ELEVATION DIFFERENCE = 22.00 TC = .389*[( 1000.00** 3.00)/( 22.00)]** .20 = 13.227 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.591 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA RUNOFF(CFS) = 7.83 TOTAL AREA(ACRES) = 2.80 PEAK FLOW RATE(CFS) = 7.83 FLOW PROCESS FROM NODE 5.00 TO NODE 3.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<k<< Q i n== i LtNU l n t r== i ) _ oju . ov UUHb H0101 0 INCHES ) = 1. STREET HALFWID7H FEET) = 18.00 DISTANCE FROM CPOWN TO CROSSFALL GRADEBREAK = 10.00 INTERIOR STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 9.78 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) _ .54 HALFSTREET FLOODWIDTH(FEET) = 13.31 AVERAGE =LOW VELOCITY(FEET/SEC.) = 3.22 PRODUCT OF DEPTH&VELOCITY = 2.08 STREETFLOW TRAVELTIME(MIN) = 2.31 TC(MIN) = 15.54 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.208 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 1.60 SUBAREA RUNOFF(CFS) = 3,92 EFFECTIVE AREA(ACRES) = 4.40 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 4.40 PEAK FLOW RATE(CFS) = 10.78 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .57 HALFSTREET FLOODWIDTH(FEET) = 14.56 FLOW VELOCITY(FEET/SEC.) = 3,71 DEPTH*VELOCITY = 2.11 FLOW PROCESS FROM NODE 3.00 TO NODE 3.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<n ---------------------------- CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MINUTES) = 15.54 RAINFALL INTENSITY (INCH & HOUR) = 3.21 EFFECTIVE STREAM AREA(ACRES) = 4.40 TOTAL STREAM AREA(ACRES) = 4.40 PEAK FLOW RATE(CFS) AT CONFLUENCE = 10.78 CONFLUENCE INFORMATION: STREAM PEAK FLOW TIME INTENSITY FM EFFECTIVE NUMBER RATEMS) (MIN.) (INCH/HOUR) (IN/HR) AREA(ACRES) -------------------------------------------------------------- 1 14.87 17.20 2.988 .49 6.60 2 10.78 15.54 3.208 .49 4.40 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. SUMMARY RESULTS: i STREAM CONFLUENCE EFFECTIVE NUMBER Q(CFS) AREA(ACRES) --------------------------------------------- I 1 24.78 11.00 2 25.39 10.36 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 25.39 TIME(MINUTES) = 15.541 EFFECTIVE AREA(ACRES) = 10.36 TOTAL AREA(ACRES) = 11.00 >» >>USING COMP_TER- EST IMATED�PIPESIZEv(NCN-PRESSURE =LON)i<<<< DEPTH OF FLOW J 27.0 INCH PIPE iS 19.0 INCHES PIPEFLO'W VELOCI-!(FEE T/SEC.) = 8.E UPSTREAM NODE EL.=VATION = 1517.00 DOWNSTREAM NODE ELEVATION = 1512.00 FLOWLENGTH(FEET) = 500.00 MANNINGS N = .013 ESTIMATED PIPE DIAMETER(INCH) = 27.00 NUMBER OF PIES = 1 PIPEFLOW THP,U SUBAREA(CFS) = 25.39 TRAVEL TIME(MIN.) = .98 TC(MIN.) = 16.52 FLOW PROCESS FROM NODE 3.00 TO NODE 3.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< CONFLUENCE VAL'U'ES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MINUTES) = 16.52 RAINFALL INTENSITY (INCH./HOUR) = 3.07 EFFECTIVE STREAM AREA(ACRES) = 10.35 TOTAL STREAM AREA(ACRES) = 11.00 PEAK FLOW RATE(CFS) AT CONFLUENCE = 25.39 FLOW PROCESS FPOM NODE 7.00 TO NODE 7.10 IS CODE = 2 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- DEVELOPMENT IS SINGLE FAMILY RESIDENTIAL -7 DWELLINGS/ACRE TC = K*f(LENGTH** 3.00)/(ELEVATION CHANGE);** .20 INITIAL SUBAREA. =LOW -LENGTH = 1000.00 UPSTREAM ELEVATION = 1550.00 DOWNSTREAM ELEVATION = 1531.00 ELEVATION DIFFERENCE = 19.00 TC = .389*[( 1000.00** 3.00)/( 19.00)]** .20 = 1-3.621 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.518 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA RUNOFF(CFS) = 10.65 TOTAL AREA(ACRE-) = 3.90 PEAK FLOW RATE(CFS) = 10.65 **************************************************************************** FLOW PROCESS FROM NODE 7.10 TO NODE 8.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< UPSTREAM ELEVATION = 1531.00 DOWNSTREAM ELEVATION = 1520.00 STREET LENGTH(FEET) = 860.00 CURB HEIGTH(INCHES) = S. STREET HALFWIDTH(FEET) = 18.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK = 10.00 INTERIOR STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBER. OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVELTIME COMPUTED 'USING MEAN FLOW(CFS) _ '-3.79 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) _ .61 STREETFLOW TRAIELTIME(MIN; _ 3.63 TC(MIN) = 17.25 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.982 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-, 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, gy=m(='ICH/HR) _ .4850 SUBAREA AREA(ACPES) = 2.80 SUBAREA RUNOFF(CFS) _ :.29 EFFECTIVE AREA(ACRES) = 6.70 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 6.70 PEAK FLCW RATE(CFS) = 15.08 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .62 HALFSTREET FLOODWIDTH(FEET) = 17.06 FLOW VELOCITY(FEET/SEC.) = 4.07 DEPTH*VELOCITY = 2.0 FLOW PROCESS FROM NODE 10.00 TO NODE 8.00 IS CODE = 8 ---------------------------------------------------------------------------- > » >>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.982 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-: 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, FQ14CH/HR) _ .4850 SUBAREA AREA(ACRES) = 8.30 SUBAREA RUNOFF(CFS) = 18.65 EFFECTIVE AREA(ACRES) = 15.00 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 15.00 PEAK FLOW RATE(CFS) = 33.71 TC(MIN) = 17.25 _ FLOW PROCESS FROM NODE 8.00 TO NODE 9.00 IS CODE = 3 >>>>> COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< » >>USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLCW)<<<<< ------------------------- DEPTH OF FLOW IN 30.0 INCH PIPE IS 19.9 INCHES PIPEFLOW VELOCITY(FEET/SEC.) = 9.7 UPSTREAM NODE ELEVATION = 1520.00 DOWNSTREAM NODE ELEVATION = 1513.00 FLOWLENGTH(FEET) = 600.00 MANNINGS N = .013 ESTIMATED PIPE DIAMETER(INCH) = 30.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 33.71 TRAVEL TIME(MIN.) = 1.03 TC(MIN.) = 18.28 FLOW PROCESS FROM NODE 9.00 TO NODE 9.00 IS CODE = 8 ---------------------------------------------------------------------------- > w >ADDITION OF SUBAREA TO MAINLINE PEAK FLOW < m 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.863 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4050 SUBAREA AREA(ACRES) = 3.60 SUBAREA RUNOFF(CFS) = 7.71 EFFECTIVE AREA(ACRES) = 18.60 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 18.60 PEAK FLOW RATE(CFS) = 39.82 TC(MIN) = 18.28 i i / / ih1VV1 I tVl+ ••:r JVOMRCh I V I'I 1111'IL t:'7C -r.f\ �"LVYI '• C ------------------- 25 YEAR RAIkFALL INTENSITY(INCH/HOUR) = 2.863 SOIL CLASSIFICA710N IS "A'' RESIDENTIAL-> ?--i DWELLINGS/ACRE SUBAPEA LOSS RATE, Fm(Ih H/HR) _ .40) SUBAREA AREA(ACRES) = 2.40 SUBAREA. RUNOFF(CFS) _ x.14 EFFECTIVE AREA(ACRES) = 21.00 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 21.00 PEAK FLOW RATE,CFS) = 44.95 TC(MIN) = 18.28 FLOW PROCESS FPOM NODE 9.00 TO NODE 6.00 IS CODE = 3 >> » >COMPUTE PIPEFLOW TRAVELTIME THP,U SUBAREA<<<<< >>> >> USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLOW)<<<<< ----------------- DEPTH OF FLOW IN 27.0 INCH PIPE IS 20.8 INCHES PIPEFLOW VELOCTY(FEET/SEC.) = 13.7 UPSTREAM NODE=LEVATION = 1513.00 DOWNSTREAM NODE ELEVATION = 1512.00 FLOWLENGTH(FEET) = 40.00 MANNINGS N = .013 ESTIMATED PIPE DIAMETER(INCH) = 27.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 44.95 TRAVEL TIME(MIN.) = .05 TC(MIN.) = 18.33 FLOW PROCESS FROM NODE 6.00 TO NODE 6.00 IS CODE = 1 >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< » >>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<•<<c CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MINUTES) = 18.33 RAINFALL INTENSITY (INCH./HOUR) = 2.86 EFFECTIVE STREAM AREA(ACRES) = 21.00 TOTAL STREAM AREA(ACRES) = 21.00 PEAK FLOW RATE(CFS) AT CONFLUENCE = 44.95 CONFLUENCE INFORMATION: STREAM PEAK FLOW TIME INTENSITY FM EFFECTIVE NUMBER RATE(CFS) (MIN.) (INCH/HOUR) (IN/HR) AREA(ACRES) -------------------------------------------------------------- 1 25.39 16.52 3.073 .49 10.0 2 44.95 18.33 2.858 .49 21.00 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. SUMMARY RESULTS: STREAM CONFLUENCE EFFECTIVE NUMBER Q(CFS) AREA(ACRES) --------------------------------------------- 1 69.59 29.29 2 68.23 31.36 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 69.59 TIME(MINUTES) = 16.521 EFFECTIVE AREA(ACRES) = 29.29 TOTAL AREA(ACRES) = 32.00 "I I , Vvl 11 v 1 - I _I -1 LVH 11. rl. LL i y11L 111t\v \ \ >>> >> USING COMP0 ER -ESTIMATED PIPESIZE fWON-PRESSURE FLOW)<<<<< ------------------------ DEPTH OF FLOW IN 36.0 INCH PIPE IS. 25.1 INCHES PIPEFLOW VEL OC17Y( FEET/SEC. ) = 12.7 UPSTREAM NODE ELEVATION = 1512.00 DOWNSTREAM NODE ELEVATION = 1509.00 FLOWLENGTH(FEET) = 200.00 MANNINGS N _ .013 ESTIMATED PIPE DIAMETER(INCH) = 36.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 69.59 TRAVEL TIME(MIN., _ .26 TC(MIN.) = 16.78 FLOW PROCESS FROM NODE 11.00 TO NODE 11.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.040 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 1.70 SUBAREA RUNOFF(CFS) = 3.91 EFFECTIVE AREA(ACRES) = 30.99 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 33.70 PEAK FLOW RATE(CFS) = 71.26 TC(MIN) = 16.78 FLOW PROCESS FROM NODE 11.0C TO NODE 11.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.040 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 2.80 SUBAREA RUNOFF(CFS) = 6.44 EFFECTIVE AREA(ACRES) = 33.79 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 35.50 PEAK FLOW RATE(CFS) = 77.70 TC(MIN) = 16.78 FLOW PROCESS FROM NODE 11.00 TO NODE 11.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.040 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 2.40 SUBAREA RUNOFF(CFS) = 5.52 EFFECTIVE AREA(ACRES) = 36.19 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 38.90 PEAK FLOW RATE(CFS) = 83.22 TC(MIN) = 16.78 FLOW PROCESS FROM NODE 11.00 TO NODE 11.00 IS CODE = 8 ---------------------------------------------------------------------------- SOIL CLASSI;=ICA7I0N IS "A'' RESIDENTIAL-, i-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) SUBAREA AREA(ACPES) = 4.50 SUBAREA PUNOFF(CFS) = 10.35 EFFECTIVE AREMACRES) = 40.69 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 43.40 PEAK FLOW RATE(CFS) = 93.56 TC(MIN) = 16.78 END OF STUDY SUMMARY: ---------------------------- TOTAL AREA(ACRES) = 43.40 EFFECTIVE AREA(XCRES) = 40.69 PEAK FLOW RATE(CFS) = 93.56 END OF RATIONAL METHOD ANALYSIS RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE (Reference: 1986 SAN BERNARDINO CO. HYDROLOGY CRITERION) Copyright 1983,86,87 Advanced Engineering Software (aes) Ver. 4.1C Release Date: 5/11/87 Serial # I00937 Especially prepared for: J.P. KAPP & ASSOCIATES, INC. ********************** DESCRIPTION OF STUDY ************************* * TRACT NO. 14277 * HYDROLOGY STUDY * 25 YEAR STORM FILE NAME: HUNTERS.DAT TIME/DATE OF STUDY: 6: 2 5/ 7/1990 ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- --*TIME-OF-CONCENTRATION MODEL* -- USER SPECIFIED STORM EVENT(YEAR) = 25.00 SPECIFIED MINIMUM PIPE SIZE(INCH) = 18.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRICTION SLOPE _ .95 *USER -DEFINED LOGARITHMIC INTERPOLATION USED FOR RAINFALL* 10 -YEAR STORM 50 -MINUTE INTENSITY(INCH/HOUR) = 1.060 100 -YEAR STORM 50 -MINUTE INTENSITY(INCH/HOUR) = 1.590 COMPUTED RAINFALL INTENSITY DATA: STORM EVENT = 25.00 1 -HOUR INTENSITY(INCH/HOUR) = 1.2461 SLOPE OF INTEJSITY DURATION CURVE _ .7000 **************************************************************************** FLOW PROCESS FROM NODE 1.00 TO NODE 2.00 IS CODE = 2 ---------------------------------------------------------------------------- >>>>>RATIONAL 'METHOD INITIAL SUBAREA ANALYSIS<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- NATURAL AVERAGE COVER TO = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)> * .20 INITIAL SUBAREA FLOW -LENGTH = 450.00 UPSTREAM ELEVATION = 1613.00 DOWNSTREAM ELEVATION = 1591.00 ELEVATION DIFFERENCE = 22.00 TO = .706*[( 450.00** 3.00)/( 22.00)]** .20 = 14.868 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.309 SOIL CLASSIFICATION IS "A'' NATURAL AVERAGE COVER "GRASS" SUBAREA LOSS RATE, Fm(INCH/HR) _ .8200 SUBAREA RUNOFF(CFS) = 12.77 TOTAL AREA(ACRES) = 5.70 PEAK FLOW RATE(CFS) = 12.77 FLOW PROCESS FROM NODE 2.00 TO NODE 3.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELEVATION = 1591.00 DOWNSTREAM ELEVATION = 1551.00 DISTANCE FROM �FO'WN TO CRCSSFALL GRADEBREAK = 10.00 INTERIOR STREET :ROSSFALL(DECIMAL) _ .020 OUTSIDE STREET _ .040 SPECIFIED NUMBED OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVEL"IME COMPUTED USING MEAN FLOW(CFS) = 16.90 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) _ .54 HALFSTREET FLOODWIDTH(FEET) = 13.31 AVERAGE FLOW VELOCITY(FEET/SEC.) = 6.60 PRODUCT OF DEPTH&VELOCITY = 3.59 STREETFLOW TRAVELTIME(MIN) = 2.53 TC(MIN) = 17.39 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.965 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(TNCH/HR) _ SUBAREA AREA(ACRES) = 3.70 SUBAREA RUNOFF(CFS) = 8.26 EFFECTIVE AREA(ACRES) = 9.40 AVERAGED Fm(INCH/HR) _ .688 TOTAL AREA(ACRES) = 9.40 PEAK FLOW RATE(CFS) = 19.26 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .57 HALFSTREET FLOODWIDTH(FEET) = 14.56 FLOW VELOCITY(FEET/SEC.) = 6.62 DEPTH*VELOCITY = 3.77 4850 FLOW PROCESS FROM NODE 3.00 TO NODE 4.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>'/COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< ------------ UPSTREAM ELEVATION = 1551.00 DOWNSTREAM ELEVATION = 1528.00 STREET LENGTH(FEET) = 880.00 CURB HEIGTH(INCHES) = 8. STREET HALFWIDTH(FEET) = 18.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK = 10.00 INTERIOR STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL)= .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVELTIME COMPUTED USING MEAN FLCW(CFS) = 22.24 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) _ .63 HALFSTREET FLOODWIDTH(FEET) = 17.69 AVERAGE FLOW VELOCITY(FEET/SEC.) = 5.70 PRODUCT OF DEPTH&VELOCITY = 3.60 STREETFLOW TRAVELTIME(MIN) = 2.57 TC(MIN) = 19.97 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.692 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 3.10 SUBAREA RUNOFF(CFS) = 6.16 EFFECTIVE AREA(ACRES) = 12.50 AVERAGED Fm(INCH/HR) _ .638 TOTAL AREA(ACRES) = 12.50 PEAK FLOW RATE(CFS) = 23.11 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .63 HALFSTREET FLOODWIDTH(FEET) = 17.69 FLOW VELOCITY(FEET/SEC.) = 5.90 DEPTH*VELOCITY = 3.73 FLOW PROCESS FROM NODE 4.00 TO NODE 4.00 IS CODE = 1 ---------------------------------------------------------------------------- --- -------------- ----___ ------------ CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTP4TION(MINUTES) = 19.97 RAINFALL INTENS:7Y (INCH./HOUR) = 2.59 EFFECTIVE STREAM AREA(ACRES) = 12.50 TOTAL STREAM AREV ACRES) = 12.50 PEAK FLOW RATE(: S) AT CONFLUENCE = 23.11 FLOW PROCESS FROM NODE 5.00 TO NODE 6.00 IS CODE = 2 ---------------------------------------------------------------------------- >>>>>RATIONAL ME -HOD INITIAL SUBAREA ANALYSIS<<<<< - -------------------- DEVELOPMENT IS SINGLE FAMILY RESIDENTIAL -> 5-7 DWELLINGS/ACRE TC = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 INITIAL SUBAREA FLOW -LENGTH = 1000.00 UPSTREAM ELEVATION = 1582.00 DOWNSTREAM ELEVATION = 1551.00 ELEVATION DIFFERENCE = 31.00 TC = .389* U Q00.00** 3.00)/( 31.00)]** .20 = 12.150 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.768 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> -7 DWELLINGS/ACRE SUBAREA LOSS PATE, FMCINCH/HR) _ .4850 SUBAREA RUNOFF(C=S) = 7.39 TOTAL AREA(ACRES) = 2.50 PEAK FLOW RATE(CFS) = 7.39 FLOW PROCESS FROM NODE 6.00 TO NODE 7.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STFEETFLOW TRAVELTIME THRU SUBAREA<<<<< -------------------------- UPSTREAM ELEVATION = 1551.00 DOWNSTREAM ELEVATION = 1528.00 STREET LENGTH(FEET) = 830.00 CURB HEIGTH(INCHES) _ S. STREET HALFWIDTP(FEET) = 18.00 DISTANCE FROM CROWN TO CROSSFALL GRADEEREAK = X0.00 INTERIOR STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 9.52 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) _ .48 HALFSTREET FLOODWIDTH(FEET) = 10.19 AVERAGE FLOW VELOCITY(FEET/SEC.) = 5.21 PRODUCT OF DEPTH&VELOCITY = 2.51 STREETFLOW TRAVELTIME(MIN) = 2.66 TC(MIN) = 15.01 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.288 SOIL CLASSIFICA-ION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE. Fm(:N0H/HR) _ .4850 SUBAREA AREA(ACRES) = 1.70 SUBAREA RUNOFF(CFS) = 4.29 EFFECTIVE AREA(ACRES) = 4.20 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 4.20 PEAK FLOW RATE(CFS) _ '0.59 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .51 HALFSTREET FLOODWIDTH(FEET) FLOW VELOCITY(FEET/SEC.) = 5.05 DEPTH*VELOCITY = 2.56 ------------------ >>>>>DESIGNATE :'!DEPENDENT STREAM FOR GNFLUENCE'<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STPEAM VALUES<i<</ --------------- CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MINUTES) = 15.01 RAINFALL INTENSITY (INCH./HOUR) = 3.29 EFFECTIVE STREAM! AREA(ACRES) = 4.20 TOTAL STREAM AREA(ACRES) = 4.20 PEAK FLOW RATE(CFS) AT CONFLUENCE = 10.59 CONFLUENCE INFORMATION: STREAM PEAK FLOW TIME INTENSITY FM EFFECTIVE NUMBER RATE(CFS) (MIN.) (INCH/HOUR.; (IN/HR) AR,EA(ACRES; -------------------------------------------------------------- 1 23.11 19.97 2.692 .64 12.55 2 10.59 15.01 3.283 .49 4.2.: RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. SUMMARY RESULTS: STREAM CONFLUENCE EFFECTIVE NUMBER G(CFS) AREA(ACRES) --------------------------------------------- 1 31.45 16.70 2 33.00 13.59 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 33.00 TIME(MINUTES) _ EFFECTIVE AREA(ACRES) = 13.59 TOTAL AREA(ACRES) = 16.70 15.035 FLOW PROCESS FRCM NODE 8.00 TO NODE 9.00 IS CCDE = 2 ---------------------------------------------------------------------------- m >>RATIONAL METHOD INITIAL SUBAREA ANALYSIS< m < DEVELOPMENT IS IS SINGLE FAMILY RESIDENTIAL -> 5-7 DWELLINGS/ACRE TC = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)>* .20 INITIAL SUBAREA FLOW -LENGTH = 1000.00 UPSTREAM ELEVATION = 1583.00 DOWNSTREAM ELEVATION = 1548.00 ELEVATION DIFFERENCE = 35.00 TC = .389*[( 1000.00** 3.00)/( 35.00)1** .20 = 12.;,54 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.332 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(=NCH/HR) _ .18 SJ SUBAREA RUNOFF(CFS) = 20.18 TOTAL AREA(ACRES) = 6.70 PEAK FLOW RATE(CFS) = 20.18 FLOW PROCESS FRCM NODE 9.00 TO NODE 10.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA <<<<< UPSTREAM ELEVATION = 1548.00 DOWNSTREAM ELEVATION = 1535.00 STREET LENGTH(FEET) = 620.00 CURB HEIGTH(INCHES) = S. STREET HALFWIDTH(FEET) = 18.00 DISTANCE FROM CROWN TO CROSS'FALL GRADEBREAK = 10.00 INTERIOR STREET CROSSFALL(DECIMAL) = .020 OUTSIDE STREET CROSSFALL(DECIMAL) = .040 **TRAVEL7:ME COMPUTED USING MEAN FLOW(CFS) = 22.38 ***STREETFLCW S=LITS OVER STREET-CROWN*x* FULL DEPTH(WEE-) _ .54 FLOODWIDTH(FEET) FILL HALF -STREET VELOCITY(FEET/SEC.; = 5.16 SPLIT DEPTH(FEET) _ .23 SPLIT FLOODWIDTH(FEET) = 5.19 SPLIT VELOCIT!(FEET/SEC.) = 3.76 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) _ .64 HALFSTREET FLOODWIDTH(FEET) = 18.00 AVERAGE FLOW VELOCITY(FEET/SEC.) = 5.16 PRODUCT OF DEPTH&VELOCITY = 3.29 STREETFLOW TRA'VELTIME(MIN) = 2.00 TC(MIN) = 14.06 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.441 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .48EC SUBAREA AREA(ACRES) = 2.40 SUBAREA RUNOFF(CFS) = 5.39 EFFECTIVE AREA(ACRES) = 9.10 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 9.10 PEAK FLCW RATE(CFS) = 24.21 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .64 HALFSTREET FLOOD'WIDTH(FEET) = 18.00 FLOW VELOCITY(FEET/SEC.) = 5.16 DEPTH*VELOCITY = 3.29 FLOW PROCESS FROM NODE 10.00 TO NODE 10.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION CF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAIdFALL INTENSITY(INCH/HOUR-) = 3.441 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 3.70 SUBAREA RUNOFF(CFS) = 9.84 EFFECTIVE AREA(ACRES) = 12.80 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 12.80 PEAK FLOW RATE(CFS) = 34.06 TC(MIN) = 14.06 **************************************************************************** FLOW PROCESS FROM NODE 10.00 TO NODE 11.00 IS CODE = 3 >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLOW)<<<<< DEPTH OF FLOW IN 24.0 INCH PIPE IS 18.7 INCHES PIPEFLOW VELOCITY(FEET/SEC.) = 12.9 UPSTREAM NODE ELEVATION = 1535.00 DOWNSTREAM NODE ELEVATION = 1514.00 FLOWLENGTH(FEET) = 800.00 MANNINGS N = .013 ESTIMATED PIPE DIAMETER(INCH) = 24.00 NUMBER OF PIPES = 1 PIPEFLOW THR,U SUBAREA(CFS) = 34.06 TRAVEL TIME(MIN.) = 1.03 TC(MIN.) = 15.09 **************************************************************************** FLOW PROCESS FROM NODE 11.00 TO NODE 11.00 IS CODE = 8 ---------------------------------------------------------------------------- >>->>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ----------- 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.275 "vunn"n nl\"ren r.c.a) - .)."-I 'Duonr.=n ruivvrrk,'ro/ U4 EFFECTIVE AREA(ACRES) = 16.00 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 16.00 PEAK FLOW RATE(CFS) = 40.18 TC(MIN) = 15.09 FLOW PROCESS FROM NODE 11.00 TO NODE 11.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.275 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm Q5CH/HR) _ .4850 SUBAREA AREA(ACRES) = 5.30 SUBAREA, RUNOFF(CFS) = 13.31 EFFECTIVE AREA(ACRES) = 21.30 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 21.30 PEAK FLOW RATE(CFS) = 53.49 TC(MIN) = 15.09 FLOW PROCESS FROM NODE 11.00 TO NODE 12.00 IS CODE = 3 >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING CCMPUTER-ESTIMATED PIPESIZE (NON -PRESSURE FLCW)<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- DEPTH OF FLOW IN 30.0 INCH PIPE IS 22.5 INCHES PIPEFLOW VELOCITY(FEET/SEC.) = 13.5 UPSTREAM NODE ELEVATION = 1514.00 DOWNSTREAM NODE ELEVATION = 1508.00 FLOWLENGTH(FEET) = 280.00 MANNINGS N = .013 ESTIMATED PIPE DIAMETER(INCH) = 30.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 53.49 TRAVEL TIME(MIN.) _ .35 TC(MIN.) = 15.43 FLOW PROCESS FROM NODE 12.00 TO NODE 12.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.224 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) _ .40 SUBAREA RUNOFF(CFS) _ .99 EFFECTIVE AREA(ACRES) = 21.70 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 21.70 PEAK FLOW RATE(CFS) = 53.49 TC(MIN) = 15.43 FLOW PROCESS FROM NODE 12.00 TO NODE 12.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.224 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(IACH/HR) _ .4850 TOTAL AREA(ACRES) = 22.70 PEAK FLOW RATE(CFS) = 55.95 TC(MIN) = 16.4.", FLOW PROCESS FROM NODE 12.00 TO NODE 12.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.224 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 1.80 SUBAREA RUNOFF(CFS) = 4.44 EFFECTIVE AREA(ACRES) = 24.50 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 24.50 PEAK FLOW RATE(CFS) = 60.39 TC(MIN) = 15.43 FLOW PROCESS FROM NODE 12.00 TO NODE 12.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.224 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 2.60 SUBAREA RUNOFF(CFS) = 6.41 EFFECTIVE AREA(ACRES) = 27.10 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 27.10 PEAK FLOW RATE(CFS) = 66.79 TC(MIN) = 15.43 END OF OF STUDY SUMMARY: TOTAL AREA(ACRES) = 27.10 EFFECTIVE AREA(ACRES) = 27.10 PEAK FLOW RATE(CFS) = 66.79 END OF RATIONAL METHOD ANALYSIS RAT AL METHOD h(DROLOGY COMPUTER PROGRAM PL -WAGE (Reference: 1986 SAN BERNARDINO- CO. HYDROLOGY ITcRiuN; Copyrign, 1983,86,87 Advancea Engineering Software (aes), Ver. _.1C Release Date: 5/11/87 Ser al # =--3937 Especially prepared for: J.P. KAPP & ASSOCIATES, INC. DESCRIPTION OF STUDY * TRACT NO. 145 7 ,� x * HYDROLOGY STUD'f * 25 YEAR STORM *�lc�fc�K�c�c�K*�Ic*�K*��Ic*�Kycx�c�c�c�c�c�ic�c�lc�Ic�c�K**�c�ic�lc*�c�lc�Ic�cyc�c�c:K�c*�c�c*�c**�c�cx*xxxx*�K�K�c�K*�k�c�c�cxxx%i�* FILE NAME: HUNTERS.4 TIME/DATE OF STI:,DY: 2:35 -9/17/1990 USER SPECIFIED ^fDROLOGY AND HYDRAULIC MODEL INFORMATIC',: *TII�?E-OF-CO�`lCENTRA T i :N MODEL* -- USER SPECIFIED S -ORM EVENT(YEAR) _ .00 SPECIFIED MIAJI;1:�M PIPE SIZE(INCH) = 18.00 SPECIFIED PERCc?.T OF GRADIENTS (DECIMAL) TO USE FOR FRIC-<,iw SLOPE: _57 *USER -DEFINED LCGARITHMIC INTERPOLATION USED FOR RAINFr_-x 10 -YEAR STORM CJ—MINUTE INTENSITY(INCH/HOUR) = 1.060 100 -YEAR STORM 60 -MINUTE INTENSITY(IINCH /HOUR) = 1.590 COMPUTED RAINFA__ INTENSITY DATA: STORM EVENT = 25.00 1 -HOUR INTENSI-'1'(INCH/HOUR SLOPE OF INTENS: -Y DURATION CURVE _ .7300 FLOW PROCESS FFL•1 NODE 1.00 TO NODE 2.00 IS CCL= _ ---------------------------------------------------------------------------- »» >RATIONAL ,-'=THOD INITIAL SUBAREA ANALYSIS< < < < --------------------------------------------------- DEVELOPMENT IS SINGLE FAMILY RESIDENTIAL -> 5-7 DWELL=.44::5/ACRE TC = K*[(LENGTHx* 3.00)/(ELE'VATICN CHANGE)]** INITIAL SUBAREri LOW -LENGTH = 900.00 UPSTREAM ELEVATION = 1696.00 DOWNSTREAM ELEVATION = 1665.00 ELEVATION DIFFE=ENCE = 31.00 TC = .389*[( 900.00** 3.00);( 31.00)]** 25 YEAR RAINF4LL INTENSITY(INCH/HOUR) = 3. SOIL CLASS IFICr-ION IS "A" RESIDENTIAL-'> 5-7 DWELLINGS/ACRE SUBAREA LOSS SUBAREA RUNOFFt,-_=S) = 7.15 .20 20 = 1'.594 938 RATE, Fmt --`ICH/HR) _ .4850 TOTAL AREA(ACRE-Si = 2.30 PEAK FLOW RATE(CF-S) _ 7.15 FLOW PROCESS FR'M NODE 2.00 TO NODE 3.00 IS CCC'= = 6 --------------------------------------------------- - ------------------------ >>>>>COMPUTE S-REETFLOW TRAVELTIME THRU SUBAREAt<<<< ------ UPSTREAM ELEVA-=JN = 1665.-30 DOWNSTREAM ELEVA TION = 1644.00 STREET LENGTH(FEET) = 550.00 CURB HEIGTH(INCH ES) _ / q. 0 r = Y Q A % T h — . '�- C — 4 e) /1 !JlblAj,4C:G 7m.i(1 .,-jeM lV °.(-U-- LL arti-U :rt:r+r. _ U'.j INTERICR STRE -_ROSSrALL( DECIMAL _ ..�20 `-UTSIDE STRE=- -POSSFALL(DECIMAL) _ ;;40 SPECIFIED 'JUMISEF OF HALFSTREETS CAPRYI':G RUNOFF = 1 " **TRA'.EL-IME 'COMPUTED USIrdG tfE,=.N FLOW(CFS) _ STREETFLOW tfC)_EL RESULTS: STREET =;GWDEPTH(FEET) _ .46 HALFSTPEET FLOODWIDTH(FEET) = 3.94 AVERAGE =LOW VELOCITY(FEET/SEC.) = 6.00 PRODUCT �F DEPTH&VELOCITY = x.74 STREETFLOW TRAVELTIME(MIN) = 1.53 TC(MIN) = 13.12 25 YEAR RAINFALL INTENSITY(INCH/HOUR) _ 2'.611 SOIL CLASSIFICATION IS "A" RESIDENTIAL -i -7 DWELLINGS/ACRE SUBAREA LOSS RATE, SUBAREA AREA+ACRES) = 1.70 SUBAREA RUNOFF(CFS) EFFECTIVE AREA(ACRES) = 4.00 AVERAGED Fm(Ii;CH/HR ) _ .485 TOTAL AREA(ACRES) = 4.00 PEAK FLOW RATE(CFS) _ END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) = .48 HALFSTRcET FLOODWIDTH(FEET) _ FLOW VELC-CIT((P=_ET/SEC.) = 6.16 DEPTH *VELOCITY = s.�_:3 -m;. _ .CH/HP, ) - .42.50 _ .78 '•.25 10.19 2..:7 FLOW PROCESS _PROS NODE 3.00 TO NODE 4.00 IS CODE = 6 >» »CCMPUTE STzEETFLOW TRAVELTIME THRU SUBAREA: < < < < UPSTREAt1 ELEVAT=JN = 1644.00 DOWNSTREAM ELEVATION = 1615.00 STREET LEiNGTIh(FEE"T) = 500.00 CURB EIGTH(INCHES) _ STREET HALFWIOT-;FEET) = 18.0 DISTANCE FRCM CROWN TO CRCSSFALL GRADEBREAK = 1C.00 INTERICR STREE- CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET ;;ROSSFALL(DECIMAL) _ .040 SPECIFIED NUIMBEP OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) STREETFLOW MODEL RESULTS: STREE- FLOWDEPTH(FEET) _ .48 HALFSTREET FLOODWIDTH(FEET) _ `0.19 AVERAGE FLOW VELOCITY(FEET/SEC.; _ -.24 PRODUCT OF DEPTH&VELOCITY = 3.49 STREETFLOW TRAVELTIME(MIN) = 1.15 TC(MIN) = 14.27 25 YEAR RAINFALL INTENSITY (INCH /HOUR) = 3.405 SOIL CLASSIFICATION IS "A" RESIDEtdTIAL -7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fmt _-NiCH/HR) _ .4850 SUBAREA AREA(ACRES) = 1.50 SUBAREA RUNOFF(CFS) = 3.94 EFFECTIVE AREA(ACRES) = 5.50 AVERAGED Fm( INCH/HR ) _ .485 TOTAL AREA(ACRES) = 5.50 PEAK FLOW RATE(CFS) = 14.45 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .49 HALFSTREET FLOODWIDTH(FEET) = 10.81 FLOW VELOCITY(FEET/SEC.) = 7.38 DEPTH*VELOCITY = FLOW PROCESS FROM NODE 4.00 TO NODE 4.00 IS CODE= 1 ------ ---------------------------------------------------------------------- �GNFLUE1 CE lAL,c3 USED FOR IiaDEPENDEt T STREAM 1 LRE: TIME OF CONCE':'=ATION (MINUTES) = 14. 27 RAINFALL INTE': `_:=T i ( INCH . /HOUR ) EFFECTIVE STKEr-:',i AREA(ACRES,) _ ;�.50 TOTAL STREAM rREA(ACRES) = 5.50 PEAK FLOW RATE':FS) AT -CONFLUENCE = 14.45 FLOW PROCESS FROM NODE 5.00 TO NODE 7.00 IS CGC= = 2 ---------------------------------------------------------------------------- -->>>>>RATIONAL-t_±ETHOD-INITIAL-SUBAREA-ANALYSIS_<<<<------------------------ DEVELOPMENT ILS SINGLE FAMIL'f RESIDENTIAL -> 5-7 DWELLT':iS/ACRE TC = K*[(LENGTHxx 3.00)/(ELEVATION CHANGE)]** .20 INITIAL SUBAREA FLOW -LENGTH = 903.00 UPSTREAM ELE`v'A =3N = 1686.00 DOWNSTREAM ELEVA-ION = 1657.00 ELEVATION DIFFERENCE = 29.00 TC = .389*[( :,00.00** 3.00)/( 29.00)]** .20 = 11,749 25 YEAR RAI'�FALL INTENSITY(INCH/HOUR) = 3.902 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(I'+'CH/HR) _ .4850 SUBAREA RUNOFF(C=S) = 15.07 TOTAL AREA(ACP,E3) = 4.90 PEAT. FLOW RATE(CFS) = 15.07 FLOW PROCESS FROM NODE 7.00 TO NODE 8.00 IS CCC= = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME 7HRU SUBAREA :<<: ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELE'+ATION = 1657.00 DOWNSTREAM ELEVATION = 1615.00 STREET LENGTH'FEET) = 750.0'0 CURB HEIGTH(INCHES) _ STREET HALFWICT�(FEET) = 18.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK = 10.00 INTERIOR STREE- CROSSFALL(DECiMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) STREETFLOW MCDEL RESULTS: STREET=LOWDEPTH(FEET) _ .56 HALFSTREET FLOODWIDTH(FEET) = 13.94 AVERAGE SLOW VELOCITY(FEET/SEC.) = 7.79 PRODUCT OF DEPTH&VELOCITY = 4.34 STREETFLOW TRAVELTIME(MIN) = 1.60 TC(MIN) 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.567 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fmi--'iCH/HR) _ 85J SUBAREA AREA(ACRES) = 4.50 SUBAREA RUNOFF(CFS) = 12.48 EFFECTIVE AREA(ACRES) = 9.40 AVERAGED Fm(I.4CH /HR ) _ .485 TOTAL AREA(ACRES) = 9.40 PEAK FLOW RATE(CFS) = I6.08 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH (FEET) _ .59 HALFSTREET FLOODWIDTH(FEET) = 15.3' FLOW VELOCITY(;:�CET/SEC.) = 7.93 DEPTH*VELOCITY ­ > > j UE5lUNA i = _ IUEPENDEN T STREAM FOR :CNFLUEN0E' • ' < c >>>>>AND COMPU7E VARIOUS CONFLUENCED STREAM ALUES<<< ---------------- CCNFLUENCE VAu« E5 USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCEN79ATION(MINUTES) = 13.25 RAINFALL INTENSITY (INCH./HOUR) _ 3.57 EFFECTIVE STREAM AREA(ACRES) = 9.40 TOTAL STREAM AREA(ACRES) = 9.40 PEAK FLOW RATE(CFS) AT CONFLUENCE = 26.08 CONFLUENCE INFCP`NATION: STREAM PEAK F,DW TIME INTENSITY FM EFFECTIVE NUMBER RATE:=S) (MIN.) (INCH/HOUR) (IN/HR) AREA(ACRES, -------------------------------------------------------------- 1 14.45 14.27 3.405 .49 5.0 2 26.C8 13.35 3.567 .49 9.i; RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FCPMULA USED FOR 2 STREAMS. SUMMARY RESULTS: STREAM CONFLu=NCE EFFECTIVE NUMBER MRS) AREA(ACRES) --------------------------------------------- 1 39.15 14.90 2 40.35 14.55 COMPUTED CONFL'WEACE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE CFS) = 40.35 TIME(MINUTES) EFFECTIVE AREAI?CRES) = 14.55 TOTAL AREA(ACRES) = 14.90 FLOW PROCESS FRSM NODE 4.10 TO NODE 9.00 IS CODE = 3 >>>>COMPUTE P:;EFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING CCMP_TER-ESTIMATED PIPESIEE (NON -PRESSURE FLCW)<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- DEPTH OF FLOW :K 24.0 INCH PIPE IS 14.9 INCHES PIPEFLOW VELOCI-Y(FEET/SEC.) = 19.7 UPSTREAM NODE E-EVATION = 1611.70 DOWNSTREAM NODE ELEVATION = 1607.00 FLOWLENGTH(FEET = 70.00 MANNINGS N = .013 ESTIMATED PIPE 3IAMETER(INCH) = 24.00 NUMBER OF PIPES = 1 PIPEFLOW THRU S_BAREA(CFS) = 40.35 TRAVEL TIME(M LN.) _ .06 TC(MIN.) = 13.41 FLOW PROCESS FRCM NODE 9.00 TO NODE 9.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE :NDEPENDENT STREAM FOR CONFLUENCE<m < CONFLUENCE VALLES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MINUTES) = 13.41 RAINFALL INTENS= -Y (INCH./HOUR) = 3.56 EFFECTIVE STREAM AREA(ACRES) = 14.55 TOTAL STREAM AREA(ACRES) = 14.90 PEAK FLOW RATO TTS) AT CONFLUENCE = 40.35 FLOW PROCESS PPCM NODE 10.00 TO NODE 11.00 IS CODE = 2 ---------------------------------------------------------------------------- >>>>>RATIONAL OETHOD INITIAL SUBAREA ANALYSIS<<<<< TC = K*[(LENGTkxx 3.00)/(ELEVATION CHANGE Q ** .20 INITIAL SUBAREA =LCW-LENGTH = 1000.CO UPSTREAM ELEVA7:TN = 1697.:0 DOWNSTREAM ELEVATION = 1660.00 ELEVATION DIFFE=ENCE = 37.00 TC = .389*[( 1:00.00** 3.00);( 37.00)]** .20 = 11.921 25 YEAR RAINF?LL INTENSITY(INCH/HOUR) = 3.662 SOIL CLASSIFICA-ION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/,ACRE SUBAREA LOSS RATE, FmAWCH/HR) _ .4!Zo SUBAREA RUNOFF(CFS) = 9.12 TOTAL AREA(ACRES) _ 1.00 PEAK FLOW RATE(CFS) = 9.12 FLOW PROCESS FROM NODE 11.00 TO NODE 9.00 is CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STFEETFLOW TRAVELTIME THRU SUBAREA<U << - ---------------------------------------------------------------------------- UPSTREAM ELEVAT:ON = 1660.00 DOWNSTREAM ELEVATION = 1610.00 STREET LENGTH(TEET) = 950.00 CURB HEIGTH(INCHES) _ i. STREET HALFWIDTA(FEET) = 18.00 DISTANCE FROM C=OWN TO CROSSFALL GRADEBREAK = 1C.00 INTERIOR STREET TROSSFALL(DECIMAL) _ .320 OUTSIDE STREET !ROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBEz OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVEL -IME COMPUTED USING MEAN FLOW(CFS) = 12.:0 STREETFLOW MO:EL RESULTS: STREET FLOWDEPTH(FEET) _ .48 HALFSTREET FLOODWIDTH(FEET) _ i0.19 AVERAGE OwOW VELOCITY(FEET/SEC.) = 7.01 PRODUCT OF DEPTH&VELOCITY = 3.38 STREETFLOW TRAvE-TIME(MIN) = 2.26 TC(MIN) = 14.18 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.420 SOIL CLASSIFICA-ION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4650 SUBAREA AREA(AC?ES) = 2.80 SUBAREA RUNOFF(CFS) = 7.40 EFFECTIVE AREA(?CRES) = 5.80 AVERAGED FY INCH/HR) _ .485 TOTAL AREA(ACRES) = 5.80 PEAK FLOW RATE(CFS) = 15.32 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .51 HALFSTREET FLOODWIDTH(FEET) = 11.4. FLOW VELOCITY(FEET/SEC.) = 7.30 DEPTH*VELOCITY = S.70 FLOW PROCESS FROM NODE 9.00 TO NODE 9.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ,ARE: TIME OF CONCENTRATION(MINUTES) = 14.18 RAINFALL INTENSITY (INCH./HOUR) = 3.42 EFFECTIVE STREAM AREA(ACRES) = 5.80 TOTAL STREAM AREA(ACRES) _ E.80 PEAK FLOW RATE(OFS) AT CONFLUENCE = 15.32 CONFLUENCE INFCRMATION: STREAM PEAK F -OW TIME INTENSITY FM EFFECTIVE ...mPly. mATr/_-^l f"y" \ /T"m"/"m"nN 'T"l"a% AoCA/AM DC. 15..2 14.18 3.420 .48 E.0 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. SUMMARY RESULTS: STREAM CONFLUENCE EFFECTIVE NUMBER Q(CFS) AREA(ACPES) --------------------------------------------- 1 55.51 20.03 2 53.89 20.35 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: 1 PEAK FLOW RATE(CFS) = 55.51 TIME(MINUTES) = 13.4'3 EFFECTIVE AREAiACRES) = 20.03 TOTAL AREA(ACRES) = 20.70 FLOW PROCESS FROM NODE 9.00 TO NODE 9.00 IS CODE = 8 -------- -------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ----------------------------------- ------------------------------------ ----------------------------------------- i 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.556 SOIL CLASSIFICA-ION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(:NCH/HR) _ .4250 SUBAREA AREA(ACRES) = 5.40 SUBAREA RUNOFF(CFS) _ 14.93 EFFECTIVE AREV ACRES) = 25.43 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 26.10 PEAK FLOW RATE(CFS) = 70.29 TC(MIN) = 13.:1 **I*xxxx***********x*x*;K FLOW PROCESS FFCM NODE 9.00 TO NODE 14.00 IS CODE = 3 >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >> >>>USING COMPUTER -ESTIMATED PIPESIZE ;NON -PRESSURE FL';'rJ)<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- DEPTH OF FLOW :N 33.0 INCH PIPE IS 24.3 INCHES PIPEFLOW VELOC_TY(FEET/SEC.) = 15.0 UPSTREAM NODE ELEVATION = 1507.00 DOWNSTREAM NODE ELEVATION = 1593.00 FLOWLENGTH(FEET) = 600.00 MANNINGS N = .013 ESTIMATED PIPE DIAMETER(INCH) = 33.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 70.29 TRAVEL TIME(MIN.) _ .67 TC(MIN.) = 14.08 FLOW PROCESS FROM NODE 14.00 TO NODE 14.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<< << CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MINUTES) = 14.08 RAINFALL INTENSITY (INCH./HOUR) = 3.44 EFFECTIVE STREAM AREA(ACRES) = 25.43 TOTAL STREAM AREA(ACRES) = 26.10 PEAK FLOW RATE(OFS) AT CONFLUENCE = 70.29 FLOW PROCESS FROM NODE 12.00 TO NODE 13.00 IS CODE = 2 ---------------------------------------------------------------------------- v -------------- DEVELOPMENT IS SINGLE FAMILY RESIDENTIAL -; ;-7 D'WELLI' GWACRE TC = K* [ (LENGTH -w 3.00WELEVATION ( ELEVATION CHANGE) ] ** .20 INITIAL SUBAREA PLOW -LENGTH = 1000.00 UPSTREAM ELEVATION = 1614.00 DOWNSTREAM ELEVATION = 1595.00 ELEVATION DIFFERENCE = 19.00 TC'= .389*L( 1000.00** 3.00)/( 19.00))** .20 25 YEAR RAINFALL INTENSITY(INCH/HOUR; = 3.518 '21 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, FmflI CH/HR) _ .4850 SUBAREA RUNOFF(CFS) = 13.38 TOTAL AREA(ACRES) = 4.90 PEAK FLOW RATE(CFS) = 13.38 FLOW PROCESS FROM NODE 13.00 TO NODE 14.00 IS CODE = 6 ----------- -->>>>COMPUTE STREETFLOW TRAVELTIME THRU<<<------------ ------- UPSTREAM ELEVATION ====1595.00 QOWNSTREAM ELEVATION �,_____________________ STREET LENGTH(FEET) _ = 15933.00 STREET HALFWIDTH(FEET) =358.00 CURB HEIGTH(INCHES) DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK = lo.00 INTERIOR STREET ZROSSFALL(DECIMAL) =.020 OUTSIDE STREET :ROSSFALL(DECIMAL) _ ,040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVEL71ME COMPUTED USING MEAN FLOW(CFS) _ ***STREETFLOW SZLITS OVER STREET -CROWN*** =.�5 FULL DEPTH(FEET) _ .64 FLOODWIDTH(FEET) FULL HALF -STREET VELOCITY(FEET/SEC.) _ SPLIT DEPTH(FEST) `•69 SPLIT VELOC F ) .49 SPLIT FLOODWIDTH(FEET) = 10.81 I (FEET/SEC.) = 2.40 STREETFLOW MCCEL RESULTS: STREET FLOWDEPTH(FEET) _ .54 HALFSTREET FLOODWIDTH(FEET) = 18.00 AVERAGE =LOW VELOCITY(FEET/SEC.) = 2,69 PRODUCT OF DEPTH&VELOCITY = 1,72 STREETFLOW TRAVELTIME(MIN) = 2.17 TC(MIN) = 15,79 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.173 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, _ SUBAREA AREA(ACRES) = 1.80 SUBAREA RUNOFF(CFS) = Fm(4,35 ';CH/HR) .4850 EFFECTIVE AREA(ACRES)= 6,70 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 6.70 PEAK FLOW RATE(CFS) _ 16.21 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .64 HALFSTREET FLOODWIDTH(FEET) = 18.00• FLOW VELOCITY(FEET/SEC.) = 2.69 DEPTH*VELOCITY = 1.72 --FLOW PROCESS FROM NODE 14.00 TO NODE 14.00 IS CODE _ ------------------------ _ _ _ ---------------- ___ _____ >>>>>DESIGNATE _NDEPENDENT STREAM FOR CONFLUENCEnm< -->>>>>AND-COMPUTE-VARIOUS-CONFLUENCED STREAM VALUESm<< <c CONFLUENCE VALUES USED FOR INDEPENDENTSTREAM 2 ARE: ----_ '___----- TIME OF CONCENTRATION(MINUTES) = A T 15.19 - n x l r\ 1 I T \ PEA � 1 .. � U S: O., . _=S =L`'� " SAT= 1 AT CGlJFL��E!•10E - '6.21 CCNFLt ENCE +_T? Ff::MATION: STREAM PEAK. -';W --NUMBER RATE(..,.=5) - ------- TIME c (MirhJ. 'NTEN�ITY FM ) (INCH/HOUR) (IN/HP.) EF=ECT ; >` ---------(MI ---------- A R EA(ACR=c-) 2 -----4---- 14.08 ------------ 16.^. 4• 15.79 3.17 9 25.4- RAINFALL INTENS=TY CONFLUENCE .49 AND TIME �` �F F _ 5 FORPUL A SUMMARY RESULT: STREAMS. RATIp USED FOR 2 STREAMS, STREAM CONF►_+UENICE EFFECTIVE - -NUMBER ----- {Lr-}----AREA(ACRES)---__-- 1 86— + 2 3G'`� 31-411 ---- COMPUTED CONFLUENCE PEAK FLOW RATEr�FS) 32.13 ESTIMATES " ARE AS FOLLOWS: _ EFFECTIVE AREA ACRES) = 86.17 TIME(MIlJUTES) _ 1a,-80 TOTAL AREA(AC?=S) _ 31.41 �� 32.BG ------------------------- FLOW PROCESS rP"� NODE , ' 5.00 TO NODE > » >>ADDIT - --------------- --- MAINLINE ----------------------- 25 ------------------ -------------- -- NE PEAK FLOW<<<<< ---- SOIL YEAR RAINF_TL INTENSITY(INCH/HOUR) IF_CA SON .S 'A' 3.437 RESIDENTIAL-% -c-7 DWELLINGS/ACRE SUBAREA SUBAREA ,yREA(ACRES) = 3.40 LOSS RATE, Fm(I"1CF,'/HR) _ ,48-90 EFFECTIVE AREA(ACRES) _ 34.81 SUBAREA RUNOFF(CFS) = 0^ `' AVERAGED Fm T ; , (�! C-J/HR ) _ . 485 TOTAL AREA(ACR=--) = 36.20 PEAK FLOW RATE{ --FS) = 92.49 TC(MIN) END OF STUDY SU-MMARY: TOTAL AREA(ACRE--) - EFFECTIVE AREA(ACRES) _ X6.20 34.81 PEAK FLOW RATE(w^FS) = --------------- -- 92.49 ------ - ----------------- END OF RATIONAL ,METHOD ANALYSIS--===____-__ RAT=:; JAL METHOD HYDROLOGY COMPUTER PROGRAM PICKAGE (Reference: 1986 SAN BERNARDII40 CO. HYDROLOGY :?ZTERION) Copyrignt 1983,86,87 Advanced Engineering Software (aes) Ver. 4.1C Release Date: 5/11/87 Serial # I'5937 Especially Prepared for: J.P. KAPP & ASSOCIATES, INC. DESCRIPTION OF STUDY******xxxx***********x* * TRACT NO. 14571 x * HYDROLOGY STUDY * 25 YEAR STORM FILE NAME: HUNTERS.S TIME/DATE OF STJDY: 23:17 /17/1990 ----------- USER SPECIFIED :HYDROLOGY AND HYDRAULIC IMODEL INFORMATIO-'- --*TIME-OF-.GNCEPlTRATIGN MODEL* -- USER SPECIFIED NORM EVENT(YEAR) = 25.00 SPECIFIED MINIMUM PIPE SIZE(INCH) = 18.00 SPECIFIED PERCENIT OF GRADIENTS(DECIMAL) TO USE FOR FRIC7:ON SLOPE _ �5 *USER -DEFINED _OGARITHMIC INTERPOLATICN USED FGR RAINFAL_* 10 -YEAR STORM _-0-MINUTE INTENSIT'r(INCHjHOUR) = 1.060 100 -YEAR STORM MINUTE INTENSITY(INCH/HOUR) = 1.590 COMPUTED RAINF;.-L INTENSITY DATA: STORM EVENT = 25.00 1 -HOUR INTENSITY(INCH/HOUR) _ 1.2461 SLOPE OF INTENS=TY DURATION CURVE _ .7000 �c�c�ic�K�lc*��tc�c�K�c�Ic�c�c�K�KMx�c�k�K**�k�c�K�K�c*��c�K�c�c�K*�c�c�c�c�cx*�c�c�cic�c��cycx�c�c�c�cacxac**�c*�c�K�lc�K*�ic�Kxxx*** FLOW PROCESS =PGM NODE 1.00 TO NODE 2.00 IS COEE _ ---------------------------------------------------------------------------- >>>>>RATIONAL '-IETHOD INITIAL SUBAREA ANALYSIS<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- NATURAL AVERAGE COVER TC = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 INITIAL SUBAREA PLOW -LENGTH = 1000.00 UPSTREAM ELEVATION = 1930.00 DOWNSTREAM ELEVATION = 1815.00 ELEVATION DIFFERENCE = 115.00 TC = .706*[( 1000.00** 3.00)/( 115.00)]** .20 = 17.2,45 25 YEAR RAINFALL INTENSITY(INCH/HOUR) SOIL CLASSIFICATION IS "A" NATURAL AVERAGE COVER "GRASS" SUBAREA LOSS RATE, Fmi.INCH/HR) SUBAREA RUNOFF(CFS) = 7.40 TOTAL AREA(ACRES) = 3.80 PEAK FLOW RATE(CFS) = 7.40 FLOW PROCESS FROM NODE 2.00 TO NODE 3.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<<, UPSTREAM ELEVATION = 1815.00 DOWNSTREAM ELEVATION = 771.00 STREET LENGTH(=EET) = 500.00 CURB HEIGTH(INCHES) _ DISTANCE Fr'1.OM CROWN T,") CROSSFALL GRAC=?='EAK = 10.00 INTERIOR STREET :ROSSFALL(DEC-IMAL ) = 'D2�j OUTSIDE STREET :ROSSFALL(DECIMAL) = .040 SPF_OIFIEJ NUM3EF OF HALFSTREET" CARRY= tzi RUNOFF = 2 **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) 5 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) _ .33 HALFSTPEET FLOODWIDTH(FEET) = 5.19 AVERAGE =LOW VELOCITY(FEET/SEC.) = 7.38 PRODUCT r_:F DEPTH&VELOCITY = 2.40 STREETFLOW TRAVELTIME(MIN) = 1.13 � MIN) _ 18.57 25 YEAR RAI"JFALL INTENSITY(INCH/HOUR! = 2.852 SOIL CLASSIF.::,A!ION IS "A" RESIDENTIAL-> .?,-4 DWELLINGS "CRE SUBAREA LOSS RATE, Fm( =NCH/HR) SUBAREA AREA.ACRES) = 2.70 SUBAREA RUNOFF(CFS) _ -5.52 EFFECTIVE AREA(ACRES) = 6.50 AVERAGED Fm(TNCH/HR) _ .721 TOTAL AREA(ACRES) = 6.50 PEAK FL, ---N RATE(CFS) = '2.47 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .36 HALFSTREET FLOODWIDTH(FEET) = 5.34 FLOW VELOCITY(FEET/SEC.) = 7.30 DEPTH*VELOCIT'Y = 2.50 FLOW PROCESS PROM NODE 3.00 TO NODE 4.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<.<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- JPSTREAM ELEVAT=ON = 1771.00 DOWNSTREAM ELEVATION = 1736.00 STREET LENGTH(FEET) = 500.00 CURB NEIGTH(INCHES) _ zi. STREET HALFWIDTH(FEET) = 18.00 DISTANCE FRCM CROWN TO CRCSSFALL GRADEBREAK = 13.00 INTERIOR STREET CROSSFALL(GECI'�IAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) = .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 14.89 STREETFLOW MCDEL RESULTS: STREET FLOWDEPTH(FEET) _ .39 HALFSTREET FLOOD'WIDTH(FEET) = 6.69 AVERAGE FLOW VELOCITY(FEET/SEC.) = 7.13 PRODUCT OF DEPTH&VELOCITY = 2.75 STREETFLOW TRAVELTIME(MIN) = 1.17 TC(MIN) = 19.54 25 YEAR RAINFALL INTENSITY(INCH/HOUR) _ 2.733 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 3-4 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm�T_NCH/HR) _ .5820 SUBAREA AREA(ACRES) = 2.50 SUBAREA RUNOFF(CFS) _ 4.84 EFFECTIVE AREA(ACRES) = 9.00 AVERAGED Fm(INCH/HR) _ .882 TOTAL AREA{ACRES) = 9.00 PEAK FLn_W RATE(CFS) = 16.61 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .40 HALFSTREET FLOODWIDTH(FEET) = 7. -CA FLOW VELOCITY(FEET/SEC.) = 7.24 DEPTH*VELOCITY = 2.0 FLOW PROCESS PROM NODE 4.00 TO NODE 4.00 IS CODE = 1 ---------------------------------------------------------------------------- UbhU rUH _•:ULHL'HucN i �61HLAM I AHE: TIME ",-ONC_`4-::ATIGN( MINUTE - ) = ' 9.:4 RAINFAL_ INT-cl;_:"Y ( INCH. /HOUR) = 2.'3 EFFECTi JE STR.E-4m AREA( ACRES J = 9.0,0 TOTAL ;, . REAM ;-;:�=A( ACRES) _ PEAK FLOW RAT_ .,=S ) AT CONFLUENCE - 16.61 FLOW PROCESS FP:M NODE 5.90 TO NOCE 5.00 IS ---------------------------------------------------------------------------- >>>>>RATIONAL 'METHOD INITIAL SUBAREA rt'IALYSIS':'.<:< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- DEVELOPMENT IS SINGLE FAMIL{ RESIDENT_AL -4 DWEL-,-S' /ACRE TC = K*i(LENGT'tix* 3.00)/(ELEvATION CHANGE)]** .20 INITIAL SUBARE,� =LOW -LENGTH = 600 .0G UPSTREAM ELE'•/A-:ON = 1775.00 DOWNSTREAM ELE'frTION = 17:55.00 ELEVATION DIFF_=ENCS = 19.00 TC = .412*[; :00.00** 3.010i/( 19.0)]" .20 = 3 25 YEAR RAI,J=•-.LL INTENSI T Yi INCH/HOUR : _ 4.488 SOIL CLASSIFiC,--ION IS "A" RESIDENTIAL-> ;.-4 DWELL INGS/ACRE SUBAREA LOSS RATE, SUBAREA RUNOFF GFS) = 11.68 TOTAL .�REA(ACR__) _ .6G PEAK =LOW iRAT=(CFS; _ i .60 FLOW PROCESS ==:�M NODE 6.00 TO NODE 4.00 IS = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE S-=EETFLOW TRAVELTIME THRU SUBAREA<<,<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM ELEVA_ON = 1756.CO DOWNSTREAM -LEVATION = 176. 00 STREET _ENGTH(==_T) = 600.JD CURB-EIGTH(I"dCHES) _E. STREET NALFWIC71(FEET) = 18.00 DISTANCE FROM _R^OWN TO CROSS=ALL GRADEEREP%K = '0.00 INTERIOR STREE- CROSSFALL(DECIMAL) _ .020 OUTSIDE STREE- :ROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = x*TRAVE_-IME COMPUTED USING iEAN FLOW.',GFS) STREETFLOW MODEL RESULTS: STREET ;:7LOWDEPTH(FEET) _ .56 HALFSTR__T FLOODWIDTH(FEET) _ :.94 AVERAGE =LOW VELOCITY(FEET/SEC.) = 5.36 PRODUCT 0-F DEPTH&VELOCITY STRE_TFLOW TRAVELTIME(MIN) = 1.71 +C(MIPJ) = 12.32 25 YEAR RAINFMLL INTENSIT'((INCH%H(DUR) = 3.773 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> -4 DWELLINGS%ACRE SUBAREA LOSS RATE, =mt=,•iCH/HR) _ .:820 SUBAREA AREA(ACRES) = 3.00 SUBAREA RUNOFrF(CFS) = 3.62 EFFECTIVE AREA,ACRES) = 6.60 AVERAGED Fm(INCR/HR) _ .582 TOTAL AREA(ACRES) = 6.60 PEAK FLOW RATE( --FS? _ '5.96 END OF SUBAREA STR,EETFLOW HYDRAULICS: DEPTH(FEET) _ .58 HALFSTREET FLOODWIDTH(FE:ET) = 15.19 FLOW VELOCITY(=_ET/SEC.) = 6.12 DEFTH*VELCCIT`; _ _.;6 ,1 > , ..DESi: 1.A ;DEPFNDE`;T .T�EAh1 FSR 1 ;1JFLUEIJCE' . < < < AND /ARIOUS 301:FLUEI4:CE� _ , =AM VALUES' < < CONFLUENCE USED F,:-)R I,JDERENDEN i =TREAM 2 ARE. ---------------- TIME OF CGNCEII-;;ATION( MINUTES i = 1 PAINFALL INTElhS_TY (INCH./HOUR) = 7 EFFECTIVE STREAI.1 AREA(ACRES) = 6.50 TOTAL STREAM AR"1(ACRES) = 6.60 PEAK. FLOW RATE(:;=S ) AT CONFLUENCE = 1 8.96 CONFLUENCE INFCRMATION: STREAM PEAK =_0W TIME INTENSITY FM E=FECTI JE NUMBER RATE"CFS) (MIN.) (INCH/HOUR) (114/HR) AREA(ACRES) -------------------------------------------------------------- i 16.6. 19.54 2.735 .68 2 18.96 12.32 3.773 .58 6.9-+ RAINFALL INTENS_TY AND TIME OF CONCENTRATION RATIO CONFLUENCE FCRMQLA USED FOR 2 STREAMS. SUMMARY RESULTS: STREAM CONFLvENCE EFFECTIVE NUMBER O(CFS) AREA(ACRES) --------------------------------------------- 1 29. 15.60 2 X4.74 12.28 COMPUTED CONFLUENCE ESTIMATES ARE AS r--L_LOWS: PEAK FLOW RATE;CFS) = 34.74 TIME:!'1INUTES) EFFECTIVE AREA(;�CRES) = 12.28 TOTAL AREA(ACRES) = 15.60 FLOW PROCESS FROM NODE 4.00 TO NODE 7.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE ST=EETFLOW TRAV=LTIME THRU SUBAREA<«< UPSTREAM ELE'•:AT_'N - 1736.::0 DOWNSTREAM ELEVATION = 1713.00 - STREET LENGTH(FEET) = 600.00 CURB HEIGTH(INC-ES) _ STREET HALFWIC7H(FEET) = 18.00 DISTANCE FROM CROWN TO CROSSFALL GRADESREAK = !0,00 INTERIOR STREE- CROSSFALL(DECIMAL) _ .020 OUTSIDE STREE' OROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBS= OF HALFSTREETS CARRYII1;G RUNOFF = 2 **TRAVEL71ME COMPUTED USING MEAN FLOW(CFS) _ 44.16 STREETFLOW MrODEL RESULTS: STREET F-OWDEPTH(FEET) _ .59 HALFSTREEET FLOODWIDTH(FEET) = 15.81 AVERAGE =LOW VELOCITY(FEET/SEC., = 6.7; PRODUCT OF DEPTH&VELOCITY = Z.99 STREETFLOW TRAVELTIME(MIN) = 1.49 `-(MIN) = 13.81 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.483 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> S-4 DWELLINGS/ACRE SUBAREA LOSS RATE, FmtINCH/HR) _ .5820 SUBAREA AREA(ACRES) = 7.20 SUBAREA RUNOFF(C=S) = 18.80 EFFECTIVE AREA(ACRES) = 19.48 AVERAGED Fm(INCH/HR) _ .611 TOTAL AREA(ACRES) = 22.80 PEAK FLOW RATE(CFS) = 50.34 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .62 HALFSTREET FLOODWIDTH(FEET) = 17.06 FLOW'VELOCITY(=SET/SEC.) = 6.80 DEPTH*VELOCITY = 4.�1 FLOW PROCESS X=OM NODE 7.00 O NODE 8.00 is C•COE = 3 >>>>,COMPUTE TITEFLCW TRAVELTIME THP.0 SJBAREA<<<<< -----'- ��-----� •-,--------------I-ESI2c-----------------____________ > > > > SIN COMPUTER -ESTIMATED � ER-ESTIMA � ED - r P ;NON -PRESSURE DEPTH OF FLOW !N 36.0 INCH PIPE IS 25.5 INCHES PIPEFLOW VELOCI"Y(FEET/SEC.) = 9.4 UPSTREAM NODE E_EVATION = 1713.00 DOWNSTREAM NODE ELEVATION = 1708.00 FLOWLENGTH(FEET, = 600.00 MANNINGS N = .013 ESTIMATED PIPE DIAMETER(INCH) = 36.00 NUMBER OF PIP=S = i PIPEFLO'W THRU SUBAREA(CFS) = 50.34 TRAVEL TIME(MIK.) = 1.06 TC(MIN.; = 14.28 �c�c�c�K�c�c�c�lc�c�K�Ic�K�ic�k�K�Icxx*�Ic�c�K�c�c�c�c�Ic�c�K�Kx*�c�c�lc:ic�c�ic**xx��k�K��c*�c�cxx�c�c�c�kxxx*�c%l��c�c�c��K�c:K�:xxxxkx FLOW PROCESS FPCM NODE 8.00 TO NODE 8.00 _S CODE _ 8 ----------------------------------- ----------------------------------------- >>>>>ADDITION C= SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.308 SOIL CLASSIFICXTION IS "A'' RESIDENTIAL-> Z-4 DWELLINGS/ACRE SUBAREA. LOSS RATE, Fm(I':CH/HR) _ .020 SUBAREA AREA(ACRES) = 2.00 SUBAREA. RUNOFF(CFS) = 4.91 EFFECTIVE AREAj-.ORES) = 21.48 AVERAGED Fm(INCH/HR) _ .509 TOTAL AREA(ACRES) = 24.80 PEAK FLOW RATU CFS ) = 52.17 TC(MIN) = 14.:E. x*�K�K�k*�c�c�Ic�c�k*�c*�cxxxK�c�c�K�c�k�c�K�c�c*�cx;k�lc�c*�K****=F*�lc�c�c�Kyc�c�ic�c�c�c�c*�c*xxxx�c*�c�cak**�k�c�lcxxxx** FLOW PROCESS FROM NODE =.00 TO NODE 8.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION 07 SUBAREA TG MAINLINE PEAK FLOW<<<<<. 25 YEAR RAINFALL INTENSITYtINCH/HOUR; _ 3.308 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> -4 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(_NCH/HR) _ .02 SUBAREA AREA(ACRES) = 2.i0 SUBAREA RUNOFX(CFS) = 6.13 EFFECTIVE AREA(ACRES) = 23.98 AVERAGED Fm(INCH/HR) _ .606 TOTAL AREA(ACRES) = 27.30 PEAK FLOW RATE(CFS) = 58.30 TC(MIN) = 14.Q ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- END OF STUDY SUMMARY: TOTAL AREA(ACRES) _ 27.30 EFFECTIVE AREA;ACRES) = 23.98 PEAK FLOW RATE(CFS) = 58.30 END OF RATIONAL METHOD ANALYSIS zx****x X*****)K**X*****xXX* **X*x RAT: � IAL METHOD r-i'LROLuG'( CCMPUTER PR.CGRAM --KAGE (Reverence: 4986 SAN BERNARDING CO. HYDROLOGY CPITERION) Copyr-gnt 1983,86,87 Advanced Engineering Sofi-ware (aes) Ver . 4.1C Release Date: 5/11,187 Serial # .�;r.,937 Especially prepared for: J.F. KAPP & ASSOCIATES, INC. ***************xx******** DESCRIPTION OF 3TUDY X****ycxMxF************xx * TRACT NO. 14572 * HYDROLOGY STUCY * 25 YEAR STORM FILE NAME: H:;N7=_RS.6 TIME/DAT= 1-13F -T'DY: 1:42 5/18/1990 -------------------------- USER SPECIPIED-;YDROLOGY AND riYDRAULIC IODEL INFCRMATI -(I: ------------------- --xTiME-OF-COiiNICENTRAT -nN MODEL* -- USER SPECIFIED STORM EVENT(YEAR) = 22;.'70 SPECIFIED MIP.+It•1UM PIPE SIZE( jNCH ) = 18.00 SPECIFI=D PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRIT;TION SLOPE _ .95 *USER -DEFINED :.•OGARITHMIC INTERPOLATION USED FOR RAINFALL* 10 -YEAR STORM a_ ---MINUTE INTENSITY(INCH/HOUR) = 1.060 100 -YEAR STORM 50 -MINUTE INTENSITY(INCH/HOUR) = 1.59C COMPUTED RAINFALL INTENSITY DATA: STORM EVENT = 25.00 1 -HOUR INTENSITY(INCH/HOUR) 1.11461 SLOPE OF INTENSITY DURATION CURVE = .7000 FLOW PROCESS FROM NODE 1.00 TO NODE 2.00 IS CODE = 2 --------------- ------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ---------------------------- DEVELOPMENT IS SINGLE FAMILY RESIDENTIAL -> 5-7 DWELL:NGS/ACRE TC = K*E(LENGTH** 00)/(ELE`:'ATION CHANGE)]** .20 INITIAL SUBAREA. FLOW -LENGTH = 680.00 UPSTREAM ELEVATION = 1710.00 DOWNSTREAM ELE`:'ATION = 1687.00 ELEVATION DIFFERENCE = 23.00 TC = .389*(( 680.00** 3.00)/( 23.00)1** .20 = 10.402 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.249 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(.TNCH/HR) _ .4850 SUBAREA RUNOFF(CFS) = 9.82 TOTAL AREA(ACRES) = 2.90 PEAK FLOW RATE(CFS) = 9.32 FLOW PROCESS FROM NODE 2.00 TO NODE 3.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< ------------------------- UPSTREAM ELEVATION = 1687.00 DOWNSTREAM ELEVATION = 1661.00 STREET LENGTH(FEET) = 380.00 CURB HEIGTH(iNCHES) = S. UlJ I MIi IAC mir, ,-1Jn IV 1 v I,r% r M L L ',I MAA L'C :.'-GM f, - t v . vv INTERIOR STREE- _�ROSSFALL(DECIMAL) _ .,,D20 OUTSIDE STREET :?OSSFALLrDECIMAL) _ .040 SPECIFIED NUMBE7- OF HALF -STREETS CARP,YI;:G RUN:JFF = 1 **TRAVEL -IME COMPUTED USING 'LEAH FLOW(CFS) _ STREETFLOW MODEL RESULTS: STREET=LOWDEPTH(FEET) _ .49 HALFSTREET FLOODWIDTH(FEET) = 10.01 AVERAGE =LOW VELOCITY(FEET/SEC.) = 8.04 PRODUCT •;F DEPTH&VELOCITY STREETFLOW TRAVE_TIME(MIN) _ .79 TC(MIN) = 11.1' 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.037 SOIL CLASSIFICATION IS "A" RESIDENTIAL 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(=',CH/HR) SUBAREA AREA(AC'PES) = 3.70 SUBAREA RUNOFF(CFS) EFFECTIVE AREA(,.CRES) = 6.60 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 6.60 PEAK FLOW RATE(CFS) i END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .54 HALFSTREET FLOODWIDTH(FEET) FLOW VELOCITY(F==T/SEC.) = 8.24 DEP-H*VELOCITY = FLOW PROCESS FROM NODE 3.00 TO NODE x.00 IS COD= = 8 ---------------------------------------------------------------------------- >:>>>ADDITION' 0P SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAIPNF41ILL INTENSITY(INCH/HOUR) = 4.037 SOIL CLASSIFICATION IS "A" RESIDENTIAL '_-7 DWELLINGS/ACRE SUBAREA. LOSS RATE, Fm(--':CH/HR50 SUBAREA AREA(ACRES) = 1.80 SUBAREA RUNOFF(CFS) = 5.75 EFFECTIVE AREA(4CRES) = 8.40 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 8.40 PEAK FLOW RATE;CFS) = 26.35 TC(MIN) = i1.' FLOW PROCESS FROM NODE 3.00 TO NODE 5.00 IS CODE = 3 >> >>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >> >>>USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLOW)<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- DEPTH OF FLOW IIN 24.0 INCH PIPE IS 16.1 INCHES PIPEFLOW VELOCI-Y(FEET/SEC.) = 12.0 UPSTREAM NODE ELEVATION = 1661.00 DOWNSTREAM NODE ELEVATION = 1656.00 FLOWLENGTH(FEET) = 210.00 MANNINGS 'J = .013 ESTIMATED PIPE DIAMETER(INCH) = 24.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 26.85 TRAVEL TIME(MIN.) _ .29 TC(MIN.) FLOW PROCESS FROM NODE 5.00 TO NODE 5.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.965 JVDHR=H MR=N, r+L"'=7 J - 4..:u bubA cm iuNumv i op : ) = 7.20 EFFECTIVE AREAE-CRES) = 10.70 AVERAGED FmQWCH/ HR ) _ .485 TOTAL AREA(ACRES, = 10.70 PEAK FLOW RATE{IFS) = 33.51 TC(MIN) = 11.48 FLOW PROCESS FROM NODE 5.00 TO NODE 5.00 IS CODE _ $ ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<(<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR,) = 3.965 SOIL CLASSIFICA-ION IS "A" RESIDENTIAL-> -7 DWELLINGS/ACRE SUBAREA LOSS RATE, FmQNCH/HR) _ .4850 SUBAREA AREA(ACRES) = 2.10 SUBAREA RUNOFF(CFS) = 6.58 EFFECTIVE AREA(ACRES) = 12.80 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 12.80 PEAK FLOW RATE(CFS) = 40.09 TC(MIN) = 11.48 FLOW PROCESS FROM NODE 5.00 TO NODE 6.00 IS CODE = 3 >>>>>COMPUTE =IPEFLOW TRAVELTIME THRU SUBAREA<<<<< >> >>>USING COMPUTER -ESTIMATED PIPESIZE (NON -PRESSURE FLC4& <<<< --------------------------------- DEPTH OF FLOW :N 24.0 INCH PIPE IS 16.4 INCHES PIPEFLOW VELOC:7Y(FEET/SEC.) = 17.5 UPSTREAM NODE=_EVATION = 1656.00 DOWNSTREAM NODE ELEVATION = 1643.00 FLOWLENGTH(FEET; = 260.00 MANNING N = .013 ESTIMATED PIP= 21AMETER(INCH) = 24.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SjBAREA(CFS) = 40.09 TRAVEL TIME(M_N.) _ .25 TC(MIN.) = 11.73 FLOW PROCESS FROM NODE 6.00 TO NODE 6.00 is CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.906 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 6-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .4850 SUBAREA AREA(ACRES) = 1.90 SUBAREA RUNOFF(CFS) = 5.85 EFFECTIVE AREA(ACRES) = 14.70 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 14.70 PEAK FLOW PATE(OFS) = 45.26 TC(MIN) = 11.73 FLOW PROCESS FROM NODE 6.00 TO NODE 6.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< --- ------------------------------ 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.906 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 6-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(:NCH/HR) _ A V tmaotu rm l 1 kom J MN ) _ .45!0 TOTAL AREA(ACPES) = 17.20 PEAK FLOW RATE -CPS) = 52.96 TC(MIN) = 11.7S FLOW PROCESS FPCM NODE 6.00 TO NODE 7.00 iS COLE = 3 >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<w < >> »USING COMPUTER -ESTIMATED PIPESIZE +NON -PRESSURE FLCw)<<< DEPTH OF FLOW :N 33.0 INCH PIPE IS 22.2 INCHES PIPEFLOW VELOO:-Y(FEET/SEC.) = 12.4 UPSTREAM NODE E_EVATION = 1643.00 DOWNSTREAM NODE ELEVATION = 1641.00 FLOWLENGTH(FEET! = 120.00 MANNINGS N _ .012 ESTIMATED PIPE DIAMETER(INCH) = 33.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 52.96 TRAVEL TIME(MIN.) _ .16 TC(MIN.) = 11.89 FLOW PROCESS FROM NODE 7.00 TO NODE 7.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE =NDEPENDENT STREAM FOR QONFLUENCE<<<<< CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MINUTES) = 11.39 RAINFALL INTENSITY (INCH./HOUR) = 3.87 EFFECTIVE STREAM AREA(ACRES) = 17.20 TOTAL STREAM AREA(ACRES) = 17.20 PEAK FLOW RATE(CFS) AT CONFLUENCE = 62.96 FLOW PROCESS FPOM NODE 8.00 TO NODE 9.00 IS CODE = 2 ---- ------------------------------------------------------------------------ >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ----------------------- DEVELOPMENT IS SINGLE FAMILY RESIDENTIAL -> 5-7 D'WELLI.GS/ACRE -- TC = K*[(LENGTHx* 3.00)/(ELEVATION CHANGE)]** .20 INITIAL SUBAREA FLOW -LENGTH = 1000.00 UPSTREAM ELEVATION = 1701.00 DOWNSTREAM ELEVATION = 1655.00 ELEVATION DIFFERENCE = 46.00 TO = .389*[( 1000.00** 3.00)/( 46.00)]** .20 = 11.413 25 YEAR RAINFALL INTENSITY(INCH/HOUR) _ 3.982 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(:4CH/HR) _ .4850 SUBAREA RUNOFF(CFS) = 9.76 TOTAL AREA(ACRES) = 3.10 PEAK FLOW RATE(CFS) = 9.76 FLOW PROCESS FROM NODE 9.00 TO NODE 7.00 IS COCE = 6 --------------------------------------------- ------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< ------------------------------------ UPSTREAM ELEVATION = 1655.00 DOWNSTREAM ELEVATION STREET LENGTH(FEET) = 900.00 CURB HEIGTH(INCHES) _ STREET HALFWIDTH(FEET) = 18.00 :.)U I vl'UC I RC=! 4u SPECIFIED OF HALFSTREETS CARRYI,,,jlli RUNOFF = 1 **TRAVE_-IME COMPUTED USING MEAN=LOW(CFS) STREETFLOW rf _-EL RESULTS: STREET F_OWDEPTH(FEET) HALFSTPEET FLOODWIDTH(FEET) AVERAGE =LOW VELOCITY(FEET/SEC.) PRODUCT OF DEPTH&VELOCITY = 2.50 STREETFLOW TRAVELTIME(MIN) = 3.49 TC'MIN) = 14.90 25 YEAR RAINFALL INTENSITY (TNCH/HOUR) = 3.303 SOIL CLASSIFICA ION IS "A" RESIDENTIAL-� 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fmf='4CH/HR) _ SUBAREA AREA(AC�ES) = 2.80 SUBAREA. RUNOFF(CFS) = 7.10 EFFECTIVE AREA(ACRES) = 5.90 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 5.90 PEAK FLOW RATE(CFS) = '4.37 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) = .51 HALFSTREET FLOODwIDTH(FEET) = 16.4L FLOW VELOCITY(FEET/SEC.) = 4.29 DEPTH*VELOCIT'Y = 2.50 FLOW PROCESS PROM NODE 7.00 TO NODE 7.00 IS COC= = 1 4f 7.J ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< ----------------- CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTPATION(MINUTES) = 14.90 RAINFALL INTENSITY (INCH./HOUR) EFFECTIVE STREAM AREA(ACRES) = 5.90 TOTAL STREAM :;REA(ACRES) _ 5.90 PEAK FLOW RATE:CFS) AT CONFLUENCE = 14.97 FLOW PROCESS F=OM NODE 10.00 TO NODE 11.00 IS COLE = 2 ---------------------------------------------------------------------------- >>>>>RATLONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ----------------------- DEVELOPMENT IS SINGLE FAMILY RESIDENTIAL 5-7 DWELL_':GS/ACRE TC = K*F(LENGTH** 3.00)/(ELEVATION CHANGE)]** .20 INITIAL SUBAREr- FLOW -LENGTH = 1000.00 UPSTREAM ELEVATION = 1698.00 DOWNSTREAM ELEVATION = 1651.50 ELEVATION DIFFERENCE = 46.50 TC = .389*f( 1000.00** 3.00)/( 46.50)]** .20 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.988 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, SUBAREA RUNOFF(CFS) = 7.88 TOTAL AREA(ACRES) = 2.50 PEAK FLOW RATE(CFS) FLOW PROCESS FROM NODE 11.00 TO NODE 7.00 IS COC_ = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< -------------------- UPSTREAM ELEVATION = 1651.50 DOWNSTREAM ELEVATION = 1641.00 STREET LENGTH(FEET) = 650.00 CURB HEIGTH(INCHES) _ S. ✓tv i rvII :- vI irt14 1+_/ 1,1%11✓vI n__ an/'�IJC�"CHT - I'J. vV INTERIOR STREE- :ROSSFALL(DECIMAL) _ .020 OUTSIDE STREET OPOSSFALL(DECIMAL) _ .040 SPECIFIED NUMBEP OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVE.TIME COMPUTED USING MEAN FLOW(CFS) = 10.:0 STREETFLOW ACCEL RESULTS: STREET FLOWDEPTH(FEET) _ .54 HALFSTREET FLOODWIDTH(FEET) = 13.31 AVERAGE FLOW VELOCITY(FEET/SEC., = 4.06 PRODUCT OF DEPTH&VELOCITY = 2.21 STREETFLOW TRAVELTIME(MIN) = 2.67 TC(MIN) = 14.06 25 YEAR RAINFALL INTENSITY(INCH/HOUR.) = 3.441 SOIL CLASSIFICATION IS "A'' RESIDENTIAL-> 5-7 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(_lCH/HR) _ SUBAREA AREA(ACRES) = 1.90 SUBAREA RUNOFF(CFS) = 5.06 EFFECTIVE AREA(ACRES) = 4.40 AVERAGED Fm(INCH/HR) _ .485 TOTAL AREA(ACRES) = 4.40 PEAK FLCW RATE(CFS) _ '1.71 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .56 HALFSTREET FLOODWIDTH(FEET) = 13.04 FLOW VELOCITY(FEET/SEC.) = 4.29 DEPTH*VELOCITY = 2.29 FLOW PROCESS FROM NODE 7.00 TO NODE 7.00 IS CODE = i 4i5 O »>>>DESIGNATE=NDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED S -REAM VALUES<<<<< ------------------ CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 3 ARE: TIME OF CONCENTRATION(MINUTES) = 14.06 RAINFALL INTENSITY (INCH./HOUR) = 3.44 EFFECTIVE STREAK'. AREA(ACRES) = 4.40 TOTAL STREAM AREA(ACRES) = 4.40 PEAK FLOW RATE;CFS) AT CONFLUENCE = 11.71 CONFLUENCE INFORMATION: 25.53 2 70.23 27.50 STREAM PEAK PLOW TIME INTENSITY FM EFFECTIVE NUMBER -------------------------------------------------------------- RATE(CFS) (MIN.) (INCH/HOUR) (IN/HR) AREA(ACRES) 1 52.96 11.89 3.369 .48 17.::. 2 14.97 14.90 3.303 .49 5.53 3 11.71 14.05 3.441 .49 4.lC RAINFALL INTENSITY AND TIME OF CONCENTP.ATION RATIO CONFLUENCE FORMULA USED FOR 3 STREAMS. SUMMARY RESULTS: STREAM CONFLUENCE EFFECTIVE NUMBER Q(CFS) AREA(ACRES) --------------------------------------------- 1 78.63 25.53 2 70.23 27.50 3 72.78 27.16 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 78.63 TIME(MINUTES) EFFECTIVE AREA(ACRES) = 25.63 TOTAL AREA(ACRES) = 27.50 END OF STUDY SUMMARY: ----------------------- TOTAL AREA(ACRES) = 27.50 EFFECTIVE AREA(ACRES) = 25.63 =IVU '„/r MP- i 1lJINML '?C I rl%dLJ /ANML 1 .?.J �KK*******xx*xxxxxx** *x*x)K**xxxgx****X*XX K***XxXXA *xxx*;g RAT = :NA L t1ETHOD HYDROLCGY :'•1PU T ER PROGRAM AGE Refee=, ;e: 19$6 SAN 3E?PlARDIi�C CC. HYDRGLOG'( G=I-ERION i .GZ6 , 37 Advances -^g 1 neer': n � SOr �r� i aes ) jJy! i �Yi v i 9ci3 , Ver. •:.1C Release Date: 5/11/87 Ser -al =_:9937 _specially precared fer:- i . P . KAPP � ASSC•GIATES , INC. ***************xxx******** DESCRIP710N STUDY �cx�c**x*xxxx*yc**�c�c**,c*xx*xx * TRACT NO. 1451.. x x HYDROLOGY STUD'( * 25 YEAR STORM - FILE NAME: HUNT-RS.7 TIME/DATE OF S -'.;DY: 1 :29 5,,21/'1990 ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- USER SPECIFIED-YDROLOGY AND HYDRAULIC ''MODEL-LNFORjHAT__.. --*TIME-F-�GNCcilTRATIC�tJ MODEL!-- USER SPcSIFIED S -ORM EVENT(YEAR) SPECIFIED MINIMUM PIPE SIZE(INCH) = c.30 SPECIFIED PERCENT OF GRADIENTS(DECIMAL. TO USE FCR FRIT.—='N SLOPE *USER— DEF INED i3GARITHMIC INTERPOLATIOt4 USED FOR RAINF.L__x 10 -YEAR STORM MINUTE 7_NTENSITY(INCH/HOUR) = 1.060 100 -YEAR 3TORM 10 -MINUTE IiJTENSIT'(( INCH/ HOUR) = 1 .590 COMPUTED RAINP,�"_ INTENSITY DATA: STORM EVENT - X5.00 1 -HOUR itlTEiiSi-.iNCiilHc}URi SLOPE OF INTENSITY DURATIvN CURVE _ .-000 FLOW PROCESS NODE 1.00 TO NODE IS C00= = 2 -------- -------------------------------------------------------------------- > > > > >RATIONAL !•,-THOD INITIAL SUBAREA =!N'ALYSIS< < < c < NATURAL AVERAGE COVER TC = K* L (LENGTHx* 3.00WELEVATION ( ELEVATION CHANGE) ] ** .'12-0 INITIAL SUBAREA FLOW -LENGTH = 540.00 UPSTREAM ELEVAT:ON = 1955.00 DOWNSTREAM EL-vATION = 1875.00 ELEVATION DIFFERENCE = 30.00 TC = .706*[( 540.00** .,.00)/( 80.30)]** .20 = "2.c12 25 YEAR RAItJF•ALL INTENSITY(INCH/HOUR; = 3.572 SOIL CLASSIFICATION IS "A" NATURAL AVERAGE COVER "GRASS" SUBAREA LJSS RATE, Fm(iliC- -!R) _ .8200 SUBAREA RUNOFF; :,FS) = 23.62 TOTAL AREA(ACRES) = 9.20 PEAK FLOW RATE(C=5 ) = 23.62 FLOW PROCESS FROM NODE 2.00 TO NODE 3.00 IS CCC- = 5 -------------------------------------------------- - ------------------------- >>>>>COMPUTE-RAPEZOIDAL-CHANNEL =LOW<;<<< >>>>>TRAVELTIME THRU SUBAREA<<<<< UPSTREAM NODE ELEVATION = 1875.00 �.... ;4A x I;4UM CES MANN Il+GS FACT y.2 CHANNEL FLOW -��J SUBAREA(CF ) _ .OS ri 1 FL014 DEPTH(FEET) _ FLOW VELGCITY'�c-t/SECS - �• TRAVEL TIME(MI3;.) _ x.10 TC(MIN.; = 15.91 FLOW PROCESS FROM NODE S.00 TO tJOCE Z.00 iS COQ= - 6 --------------------------- ---------------- < � >>>>>ADDITION OF MAINLINE F.At'. FLOW : < � SUBAREA TO ---=25-YEAR RAINFALL INTENSITY(INCH/HIOUR) _ �•��5 SOIL CLASSIFICMTiON IS "A" T o -OVER 'GRASS" SUBAREA L°OSS RATE, Fm(IN -/ A } _ cG'1 NATURAL AJERA�E �" SUBAREA AREA (ACP.ES ) = 1111.50 SUBAREr- RUNOFF ( CFS ) _ -,+.17 EFFECTIVE AREri. .CRES) = 420.70 r AVERAGED=m(I'JCH/HR ) _ . a `r � TOTAL AREA(ACRES) _ 0.70 PEAK FLOW RATE(CFS) = 43.51 TC(MIN) = 15.c1 cCMxx**yc*6 --FLOW-PROCES`-;:ZCM NODE 3.00 NODE -----5.00 L- ---------- --------- STREETFLOW TRAVELTIME THRU-SUBAREA-(<<<______________________ - _ DOWNSTREAM ELEVATION = 1746.00 UPSTREAM-ELE'1nTION = 1109.00 STREET LENGT";iFEET) = 970.00 CURB HEIGTH(INCHES) _ STREET HALFWICTH(FEET) = 13.00 DISTANCE FROM, CROWN TO CROSSFALL GRADEBREAK = 10.00 020 INTERIOR STREET CROSSFALL(DECIMAL) _ OUTSIDE STREE- „ROSSFALL(DECIMAL) _ -140 SPECIFIED NU* -3E- OF HALFSTREE T S CARRYI*1+u RUINOFF = **TRAVELTIME COMPUTED USING MEAN FLOW(CFS; - .64 STREETFLOW MODEL RESULTS: STREET rLOWDEPTH(FEET) _ .61 HALFSTREET FLOODWIDTH(FEET) = 15.44 /•`5 AVERAGE FLOW VELOCITY(FEET%SEC.i _ PRODUCT O�.40 F DEPTH&VELOCITY 13.1 STREETFLOW -,RAVE_TIME(MIN) = 2..:3 25 YEAR RAIJJFALL INTENSITY(INCH/HOUR) = 2.379 SOIL CLASSIFICATION IS RESIDENTIAL-', 2-4 DWELLINGS/ACRE SUBAREA LOSS RATE, Fes;-�.CH/HR) _ •���� 6.90 SUBAREA RUNOFF(C FS) _ 4.26 SUBAREA AREA"ACRES) _ � I. EFFECTIVE AREA(ACRES) 27.60 AVERAGED Fm( INCH/HR )_ . 760 PEAK FLOJW RATE(CFS) _ 52.61 TOTAL AREA(ACRES) = 27.60 END OF SUBAREA STREETFLOW HYDRAULICS: _ DEPTH( FEET) _ .62 HALFSTREET FLOODtNIDTH(FEET ) = 17.' 6 FLOW VELOCITY( FEET/SEC. ) = 7.11 DEPTH*VELOCITY = �•�``� FLOW PROCESS FROM NODE 5.00 TO NOCE 5.0 0 T S- ----------- --------------- --------- --------------------------------- • >>>>>DESIGNAT; INDEPENDENTTFOR .:ONFLUENC E<<<<c STREAM CCNF L U Et4CE VALUES USED FOR INDEPENDENT STREAM 1 ARE: -T.A.- -\P'-1^-'I— . TT '\... / .ATN" I-gi p.' - TOTAL STPEAM F=-A(ACRES) _ .c(j PEAS: FLOW RAT= .=S ) AT CONFLUENCE _ 52 . 61 FLOW PROCESS FGM NODE 6.00 TO NODE 7.00 IS CCD:-: = 2 ---------------------------------------------------------------------------- > »>>RATIONAL 'fETHOD INITIAL SUBAREA ANALYSIS:<<<<. NATURAL POOR CC7ER TC = K* r (LENG T -.xx 3 .00) / ( ELEVATION CHANGE)'** .210 INITIAL SUBAREA. =LOW -LENGTH = 1000.00 UPSTREAM ELEVATION = 1950.00 DOWNSTREAM ELEVATION = 1830.00 ELEVATION DIFFERENCE = 112.00 TC = .525*(( 1;,00.00** 3.00 /( 112.00)j** .20 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.656 SOIL CLASSIFICn-ION IS "A" NATURAL POOR CC': ER "BARREN' SUBAREA L ;SS RATE, =m( lNCH/-= _ .41 s�C SUBAREA RUNOFF:' --=S) = 24.83 TOTAL AREA(ACRES ) = 8. 50 PEAK. "-LOW RATE( CF3 ) = 24.83 FLOW PROCESS FROM NODE 7.05 TO NODE 5.00 IS CODE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE TPAPEZOIDAL-CHANNEL FLOW<<<<< >>>>>TRAVELTIME THRU SUBAREA<(<<< UPSTREAM IlODE=-EVATION a.;,+u DOWNSTREAM NODE ELEVATION = 1810.00 CHANNEL LENGTH -HRU SUBAREA(=EET) = 220.00 CHANNEL BASE; F=ET ) = 100. »0 Z" FA+2TOR = 5 . JO MANNINGS FACTC-F = . 035 '•1A:;IMUM DEP--f (FEET) = 2.00 CHANNEL FLOW '�?U SUBAREA(CFS) FLOW VELOCITY==-ET/SEC) _ x.17 =LOW DEPTH(FEE ) _ .08 TRAVEL TIME (IM ) = 1.16 TC(MIN. ) = 14.05 FLOW PROCESS FROM NODE 5.00 TO NODE 3.00 IS COCE = o --------------------------------------------------- ------------------------- > > > > >ADCITION CF SUBAREA TO MAINLINE PEAK FLO'rq<<: < : < 25 YEAR RAINFALL INTENSITY(INCH /HOUR) _ ,,.w43 SOIL CLASSIFICA-ION IS "A" NATURAL POOR COVER "BARREN" SUBAREA LOSS RATE, Fm(INCH/==) SUBAREA AREA(ACRES) = 2.50 SUBAREA RUNOFF(CFS) EFFECTIVE AREA (HCRES) = 11.00 AVERAGED Fm(INCH/HR) _ .410 TOTAL AREA(ACRES) = 11.00 PEAK. FLOW RAT:-::-"Cr--S) = 30.02 TC(MIN) FLOW PROCESS =ROM NODE 8.00 TO NODE 9.00 IS CODE = 6 --------------------------------------------------- - ------------------------ >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA « <<< --------------------------------------------------- - ------------------------ --------------------------------------------------- - ------------------------ UPSTREAM ELEVATION = 1812.00 DOWNSTREAM ELEVATION = 1753.00 STREET LENGTH(=EET) = 900.00 CURB HEIGTH(INCH ES) = �. ul;:. I i-fV(,G rrcuiq wy114 1 v �_MIJ,_,Zorr.L L arr:L.-ECJ-.n INTERIOR :TRE :ROSSFALL (DE,:;TMAL) _ .02C OUT°I^uE STREET _F ')SSFi,LL vE-�I�•1AL ) _ .040 SPECIFIED NUMBc= OF HALFSTREETS CAINR`fI'i.3 P.UNG1 = 2 **TRAVEL -IME COMPUTED USING MEAN FLOW(CFS) STREETFLOW MCI --,:-::L RESULTS: STREET POWDEPTH(FEET) _ .5 HALFSTREET FLOODWIDTH(FEET) = 12.69 AVERAGE =LOW VELOCIT'%(FEET/GEC.; PRODUCT 'jr- DEPTH&VELOCITY = .:.10 STREETFLOW TRAvELTIME(MItJ) = 1.96 -k., = 16. 0v 25 YEAR RAINIFALL INTENSITY(INCH/HGUP) = 3.144 SOIL CLASSIFICA-ION IS "A" RESIDENTIAL 3-4 DWELLINGS/ ACRE SURA. _IEA LOSS RATE, Fm(_':3H/HR) SUBAREA AREA(ACRES) = 5.00 SUBAREA. RUNOFF(CFS) = 2.83 EFFECTIVE AREACRES) = 17.00 AVERAGED Fm (T _ .471 TOTAL AREA(ACRES; = 17.00 PEAK FLC'.Y RAT=(�FS) END OF SUBAREA. STREETFLOW HYDRAULICS: DIEPTH ( FEET) _ .:4 HALFSTREE-1 FL00D`,:IDTH( FEET; = 1::. v' FLOW VELOCITY FEET/SEC.7.98 DE!=-TH*VELOCIT' = 4.2 FLOW PROCESS Fr=>M NODE 9.00 TO NOD= 5.00 iS CODE _ >>>>CCMPUTE D_ZEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING (LMP -TER -ESTIMATED PIPESI2E (NON -PRESSURE FLC&)<<<<< DEPTH OF FLOW 24.0 INCH PIPE IS ;3.3 INCHES PIPEFLO'W VELCC�.-Y(FEET/SEC. ) = 15.9 UPSTREAM NODE E -OVATION = 1750.00 DOWNSTREAM ; C:;E ELEVATION = 17 48. C-0 FLOW L-ENGTH(FEE= 250.00 MANNINGS' ;J = .013' ESTIMATED PIP= CIAMETER(INCH) = 24.0= NUMBER OF ?IP== = 1 PIPEFLOW THRU S_BAREA(CFS) = 40.89 TRAVEL TI lE(M7N. /, _ .26 TC(MIN. , = 16.26 FLOW PROCESS 7m' -,'M NODE 5.00 TO NCGE 5.00 IS CODE = 1 >>>>>DESIGNMATE =INDEPENDENT STREAM FOR CONFLUENCE <<<< >> » >AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES <<<<% CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENT RATION (MINUTES) = 16.25 RAINFALL INTENSITY (INCH./HOUR) = 3.11 EFFECTIVE STREAM AREA(ACRES) = 17.00 TOTAL STREAM AREA(ACRES) = 17.00 PEAK FLOW RATE(CFS) AT CONFLUENCE = 40.89 CONFLUENCE II•iFCRMATION: STREAM PEAK FLOW TIME INTENSITY FM EFFECTIVE NUMBER RATE(CFS) (MIN.) (INCH/HOUR) (IN/HR) AR EA(ACRE_) -------------------------------------------------------------- 1 ------------------------------------------------------------- 1 52.51 18.14 2.879 .76 27.5 2 40.89 16.26 3.108 .47 1'11- RAINFALL INTENSITY AND TIME OF CONCENTRATION RAT T O CONFLUENCE FORMULA USED FOR 2 STREAMS. 1 09 . 9 44 . 2 9 1 41 . 74 COMMUTED CON,.FL�ENCE ESTIMATES ARE AS ^JL�-UWS: PEAK FLOW RATE: -,FS) = 93 . 16 TIME ( MINUTES ; = 16 .:: 9 EFFECTIVE AREA(r�RES) _ »1.74 TOTAL AREA(ACREE) = 44.60 FLOW PROCESS FPCM NODE 5.00 TO NODE 10.00 IS COC= = 3 >>>>>COMPUTE PIFEFLOW TRAVELTIME THRU SUBAREA<<<e< >> >>>USING COMPI;TER-ESTIMATED PIPESIZE (NON-PRESSURE DEPTH OF FLOW 27.0 INCH PIPE IS 21.33 INCHES PIPEFLOW VELOC=-'f(FEET/SEC.) = 27.0 UPSTREAM NODE ---VATION = 1743.00 DOWNSTREAM NODE ELEVATION = 1715.00 FLOWLENGTH(FEE-; = 340.00 MANNINGS 013 ESTIMATED PIPE 22AMETER(INCH) = 27.00 NUMBER OF PIF_E PIPEFLOW THRU 3Z'jBAREA(CFS) = 93.1c TRAVEL TIME(MI':.) _ .21 TC(MIN. = 16.47 ******** xx***** KIK****X*********x*X********x*****xxx**x*********AXX** FLOW PROCESS F% -GM NODE 10.00 TO NODE 10.00 IS COC- = 8 ---------------------------------------------------------------------------- >>>>>ADDITION C= SUBAREA TO MAINLINE PEAK. FLOW<<<<< 25 YEAR RAI:F-.-L INTENSITY(INCH/HOUR) = 3.080 SOIL CLASSIFICr-ION IS "A" RESIDENTIAL-, 3-4 DWELLINGS/ACRE SUBAREA LOSS RA-=, Fm(='iCH/HR) _ .552+� SUBAREA AREA(r._:)ES) = 3.60 SUBAREA RUNOFF(CFS) = 3.09 EFFECTIVE AREA t 4ORES ) = 45..-)4 AVERAGED Fm(INC�-/HR) _ .638 TOTAL AREA(ACRES) = 48.20 PEAK FLOW RAT- CFS) = 99.66 TC(MIN) = 16.4.7 FLOW PROCESS FP-iM NODE 10.00 TO NODE 10.00 IS COC= = 8 ---------------------------------------------------------------------------- >>>>>ADDITION C= SUBAREA TO MAINLINE PEAK FLOW<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.080 SOIL CLASSIFICA-ION IS "A" RESIDENTIAL-> -4 DWELLINGS/ACRE SUBAREA LOSS RATE, FT(=N•+CH/HR) _ .5320 SUBAREA AREA( ACRES) = 7.70 SUBAR-A ?UNOFF(CFS) = 7.31 EFFECTIVE AREA(41CRES) = 53.04 AVERAGED Fm(I:-:CH/HR ) _ .630 TOTAL AREA(ACRE-c) = 55.90 PEAK FLOW RATE( CFS) = 116.97 TC(MIN) = 16.4.7 FLOW PROCESS FROM NODE 11.00 TO NODE 12.00 IS CODE = 2 --------------------------------------------------- ------------------------- > > > > > RATIONAL METHOD INITIAL SUBAREA ANAL`:'SIS< < < < --------------------------------------------- DEVE LOPMENT IS SINGLE FAMILY RESIDENTIAL -> 3-A DWELL_-'.GS/ACRE INITIAL 3UBAPEL =_OW -LENGTH = 1000.00 JPSTREAM ELEVAT:SN = 1766..J,0 DOWNSTREAM ELEIr-ICid = 169E.00 ELEVATION GIF==:;EiJCc = 71.0 Ti, _ 1 = [ ( �u0 . �J0** - .001;/( 71 . ;0) ] ** .20 = 1 _ 83 '25 YEAR RAItJF4LL INTENSITY(TINCH/HOUR) = 4.064 SOIL f:,LASSIF:CATION IS "A" RESIDENTIAL 3-4 DWELLINGS/ACRE SUBAREA LOSS RATE, F^t(:'JCH/HR) _ .5820 SUBAREA RUNOFF(CFS) = 24.45 TOTAL AREA(ACRES) = 7.80 PEAK FLOW RATE(CFS) = 24.45 FLOW PROCESS FR.' --"M NODE 12.00 TO NODE 13.00 IS CCGE = 6 ---------------------------------------------------------------------------- >>>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAPM ELEVATION = 1695.00 DOWNSTREAM ELEVATION = 1672.00 STREET LENGTH(FEET) = 400.00 CURB HEIGTH(INCHES) _ ?. STREET HALFWIF;TH(FEET) = 18.00 DISTANCE FROM CROWN TO CROSSFALL GRACEEREAK = 10.00 INTERIOR STREET CROSSFALL(DECIMAL) _ .020 OUTSIDE STREE- CROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = **TRAVEL -IME COMPUTED USING MEAIN FLOW(CFS) = 27.34 STREETFLOW IMODEL RESULTS: STREET FLOWDEPTH(FEET) _ .61 HALF -STREET FLOODWIDTH(FEET) = 16.44 AVERAGE FLOW VELOCITY(FEET/SEC.) = 7.97 PRODUCT OF DEPTH&VELOCITY = -=.84 STREETFLOW TRA'VELTIME(MIN) _ .84 TC(MIN) = 11.92 2bYEAR RAitJFALL INTENSITY(INCH/HOUR, = 3.363 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> 3-4 DWELLINGS/ACRE SUBAREA LOSS RATE, Fmt :":CH/HR) _ .:.320 SUBAREA AREA(ACRES) = 2.30 SUBAREA RUNOFF(CFS) = 5.79 EFFECTIVE AREA(ACRES) = 10.10 AVERAGED Fm(I'JCH/HR) _ .582 TOTAL AREA(ACRES) = 10.10 PEAK FLOW RATE(CFS) _ 29.82 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .61 HALFSTREET FLOODWIDTH(FEET) = 16.4= FLOW VELOCITY,FEET/SEC.) = 8.54 DEPTH*VELOCITY = =.13 FLOW PROCESS SROM NODE 13.00 TO NODE 13.00 IS CODE = 1 ---------------------------------------------------- ------------------------ >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 r"%RE: TIME OF CONCENTRATION (MINUTES) = i1.92 RAINFALL INTENSITY (INCH./HOUR) = 3.36 EFFECTIVE STREAM AREA(ACRES) = 10.10 TOTAL STREAM AREA(ACRES) = 10.10 PEAK FLOW RATE!C FS) AT CONFLUENCE = 29.82 FLOW PROCESS FROM NODE 14.00 TO NODE 15.00 IS CCZ.E = 2 --------------------------------------------------- - ------------------------ >>>>>RATIONAL 'METHOD INITIAL SUBAREA ANALYSIS<<<<< TC = K*f(LEN G--xx 3.00)/'ELEVATION CHANGE)]** .20 INITIAL 3UBAF =LOW -LENGTH = 760.00 UPSTREAM ELE',lr":' = 173-2. 30 DOWNSTREAM E-: =- iA-ICN = 1698.00 ELEVATION DIFr=?ENCE = 34.00 TC = .412*r( 760.00** 3.00)/( 34.00)]** .20 = 10.=32 25 YEAR RAI -F,! -LL INTENSITY( LNCH,'HOUR) = 4.11= SOIL ^,LASSIF7-A-ION IS "A" RESIDENTIAL-.> 3-4 DWELLINGS/ ACRE SUBAREA LOSS RATE, Fm! :'rti'H/HR) _ .5820 SUBAREA RUNCFFirFS) = 7.95 TOTAL AREA(ACRES, = 2.50 PEAK FLC4 RATE(OFS) = 7.95 FLOW PROCESS F?CM NODE 15.00 TO NODE 16.00 IS COD= = 6 ---------------------------------------------------------------------------- >>>>>CO,'MPUTE S-REETFLOW TRAVELTI,JME THRU SUBAREA<<<<< UPSTREAM ELEVATION = 1698.00 DOWNSTREAM ELEVATION = 1676.00 STREET 'LENGTH(==cT) = 380.00 CURB HEIGTH(IPdCHES) _ _. STREET HALF'WI:,-H (FEET) = 18.00 DISTANCE FROM :=OWN TO CROSSFALL GRADEEPEAK = 10.00 INTERICR STRE=7 CROSSFALL(DECIMAL) _ .020 OUTSIDE STREET CROSSFALL(DECIMAL) _ .040 SPECIFIED NUMBER OF HALF -STREETS CARRYING RUNOFF = i **TRAVE_TIME COMPUTED USING MEAN FLOW(CFS) STREETFLOW CDEL RESULTS: STREET=LOWDEPTH(FEET) _ .43 HALFSTREET FLOODWIDTH(FEET) = 7.81 AVERAGE FLOW VELOCITY(FEET/SEC.: = 7.11 PRODUC- JF DEPTH&VELOCITY = 3.06 STREETFLOW TRAvELTIME(MIN) = .89 TC(MIN) = 11.78" 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.394 SOIL CLASSIFICATION IS "A" RESIDENTIAL-> .-4 DWELLINGS/ACRE SUBAREA LOSS RATE, Fmt:',CH/HR) _ .5820 SUBAREA AREA(ACRES) = 1.20 SUBAREA RUNOFF(CFS) = 3.58 EFFECTIVE AREAiACRES) = 3.70 AVERAGED Fm(I`JCH/HR) _ .582 TOTAL AREA(ACRES) = 3.70 PEAK FLCW RATE(;,FS) = ",.03 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .44 HALFSTREET FLOODWIDTH(FEET) = 8.3' FLOW VELOCITY FEET/SEC.) = 7.45 DEF-H*VELOCITY = FLOW PROCESS rROM NODE 13.00 TO NODE 13.00 IS CODE = 1 > > > > > DESIGNATE=NDEPENDENT STREAM FOR CCNFLUENCE< < < < < >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< CONFLUENCE ''JALL'ES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCE'rTRATION(MINUTES) = 11.75 RAINFALL INTENSITY (.INCH. /HOUR) = 3 . '839 EFFECTIVE STREAM AREA(ACRES) = 3.70 TOTAL STREAM AREA(ACRES) = 3.70 PEAK FLOW RAT=(OFS) AT CONFLUENCE = 11.03 CONFLUENCE 1iNFORMATION: STREAM PEAK =:-OW TIME INTENSITY FM EFFECTI':`E ob 1 1 . 78 .. -7, RAINFALL . 58 RAINFALL I�JTE'�S=-( AND -IME OF CONCEIJTRA -1110- CONFLUENCE FORM -LA USED F,R _ STREAMS. SUMMARY RESULT_: STREAM CONFLUENCE EFFECTIVE NUMBER 0(CFS) AREA(ACRES) --------------------------------------------- 1 40.'5 13.80 40.75 13.68 COMPUTED CONFL:E'JCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RAT_(C75) = 40.79 TIME('4INUTES) = 11. 83 EFFECTIVE AREAtr:,RES) = 13.68 TOTAL AREA(ACRES) = 13.80 FLOW PROCESS F=ROM NODE 13.00 TO NODE 17.00 IS CODE = 3 >>>>>COMPUTE PI=EFLOW TRAVELTIME THRU 'zJBAREA<<<<< >>>>>USING COMP; -TER -ESTIMATED PIPESIEE NON -PRESSURE FL:.W)<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- DEPTH OF FLOW I': 24.0 INCH PIPE IS .6.3 INCHES PIPEFLOW VELCC1_.,(FEET/ SEC. ) = 19.4 UPSTREAM NODE E VATION = 1672.00 DOWNSTREAM NODE=LEVATION = 1621.00 FLOWLENGTH(FEE- = 200.00 MANNINGS J = .01 ESTIMATED PIPE -�IAMETER(INCH) = 24.-30 DUMBER OF PIPES = 1 PIPEFLOW THRU _"_2AREA(CFS) = 40.79 TRAVEL TIME(MIN.! _ .69 TC(MIN.) = 12.47 FLOW PROCESS NODE 17.00 TO NODE 17.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>:vESIuNATE __NDEPENDENT STREAM FOR CONFLUENCE<<<<< CONFLUENCE VAL;.=-S USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENT?ATION(MINUTES) = 12.47 RAINFALL INTENS= -Y (INCH./HOUR) = 3.7w EFFECTIVE STREAM AREA(ACRES) = 13.68 TOTAL STREAM ,4REA(ACRES) = 13.80 PEAK FLOW RATE(:FS) AT CONFLUENCE = 40.79 FLOW PROCESS FROM NODE 19.00 TO NODE 18.00 IS CODE = 2 --------------------------------------------------- ------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<_< DEVELOPMENT IS SINGLE FAMILY RESIDENTIAL -> 3-4 DWELLINGS/ACRE TC = K*j(LENG7Wx* 3.00)/(ELEVATION CHANGE)]** INITIAL SUBAREA LOW -LENGTH = 1000.00 UPSTREAM ELEV.AT_0N = 1672.00 DOWNSTREAM ELEVATION = 1621.00 ELEVATION DIFFE=INCE = 51.00 TC = .412*L( '00.00** 3.00)/( 25 YEAR RAINFALL INTENSITY(INCH/HOUF' = 3. SOIL C LASSIFIC14TION IS "A" RESIDENTIAL-> 3-4 DWELLINGS/ACRE SUBAREA LOSS SUBAREA RUNOFF(CFS) = 10.09 .2c) .20 = 11.c41 880 RATE, Fm( INCH/HR ) _ .5820 TOTAL AREA(ACRES) = 3.40 PEAK FL OW RATE (CFS ) = 10.09 AC**.yC%K%K%I:.'K%K 7K �C J►'.7�C 7F.T..ICX.L FT7F.T.)IC�TJK 7.R.7.��x.T..R.F.R•1c �.F .R .r. aC 7RR�T.T. aC 7.1CT 1.T.1 F.R JF xdcJ�.�aC J►. .T. 1►. .1C �cfi.R�F.F ?cx��F FLOW PROCESS Fr -r-,'4 NODE 15.x:'0 TO VOCE 18.00 IS COLE = 8 --------------------------------------------------- >>>>>ADDITION 0= SUBAREA TO MAINLINE PEAK FLOW<<;<< 25 YEAR RAINIFALL INTENSITY( INCH/ HOUR.; = 3.880 SOIL CLASSIFICATION IS "A" RESIDENTIAL-.' 2-4 DWELLINGS/ACRE SUBAREA LOSS RATE, Frri _?;CH/HR) = 5e_0 SUBAREA AREA(ACPES) = 3.10 SUBAREA RUNOFF(CFS) = 9.20 EFFECTIVE AREA(ACRES) = 5.:.0 AVERAGED =m(INC-,IHR) _ .582 i TOTAL AREA(ACRES) = 6.50 PEAK FLOW RATE((_ -FS) = 19.30 TC(MIN) = i1.--4 FLOW PROCESS FROM NODE 13.00 TO NODE 17.00 IS C.JDE = 3 >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING CCMFt:TER-ESTIMATED PIPESIZE ;NON -PRESSURE FL_N)<<<<< DEPTH OF FLOW _-N 21.0 INCH PIPE IS 16.6 INCHES PIPEFLOW VELGCI +'(FEET/SEC.) = 9.4 UPSTREAM NODE E_EVATION = 1622.00 DOWNSTREAM NODE ELEVATION = 1621.00 FLOW LENGTH(FEE 7= 60.00 MANNINGS ;J = 1 ESTIMATED PIPE SIAMETER(INCH) = 21.0 NUMBER. OF PIPES = 1 PIPEFLOW THRU S",I3AREA(CFS) = 19.30 TRAVEL TIME(MIJ:.; = .11 TC(MIN.; FLOW PROCESS FKCM NODE 17.00 TO NODE 17.00 IS CODE = 1 > > > > DESIGNATE _-:DEPENDENT STREAM FOR >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCEN-PATION(MINUTES) 11.85 RAINFALL INTENSITY (INCH./HOUR) 3.Z-56 EFFECTIVE STREAA AREA (ACRES) = 6.50 TOTAL STREAM AREA(ACRES) = 61.50 PEAK FLOW RATE(CFS) AT CONFLUENCE 19.30 CONFLUENCE INFORMATION: STREAM PEAK E�_OW TIME INTENSITY FM EFFECTIL V'E NUMBER -------------------------------------------------------------- RATE(C.- ) (MIN.) (INCH/HOUR) (IN/HR) AR EA(ACRES) 1 40.79 12.47 3.742 .58 13.E 2 19.30 11.95 3.856 .58 6.5� RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO OOtg,F1kHENR�FS�FORSULA USED FOR 2 STREAMS. STREAM CONFL'U'ENCE EFFECTIVE NUMBER G(CFS) AREA(ACRES) --------------------------------------------- 1 59.41 20.18 2 59.78 19.61 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) 59.78 TIME (MINUTES-) 11.947 EFFECTIVE AREA(ACRES) 19.61 TOTAL AREA(ACRES) = 20.30 FLOW PROCESS FTlM NODE 17.00 TO NODE 17.00 IS CCS= = 8 -------------------------------------------- --- > > ; : %ADDITIv�d O= SUBAREA TO !�AIIlLI�JE P—crK FLOW< < < < c 25 YEAR RAINFLLL INTENSITY(INCH/HOUP; = 3.856 --- — SOIL CLASSIFIA710N IS "A'' RESIDENTIAL 3-4 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(INCH/HR) _ .E820 SUBAREA AREA(ACRES) = 2.80 SUBAREA RUNOFF(CFS) = 3.25 EFFECTIVE AREA(ACRES) = 22.41 AVERAGED Fm(INCH/HR) _ .582 TOTAL AREA(ACRES) = 23.10 PEAK FLOW RATE(CFS) = 66.04 TC(MIN) = 11.95 FLOW PROCESS FROM NODE 17.00 TO NODE 17.00 IS CODE = 8 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< 25 YEAR RAINFALL INTENSITY(INCH/HOUR) = — ----------------- 3.856 SOIL CLASSIFICATION IS "A'' RESIDENTIAL—> 3-4 DWELLINGS/ACRE SUBAREA LOSS RATE, Fm(:NCH/HR) _ .SS20 SUBAREA AREA(ACRES) = 5.10 SUBAREA RUNOFF(CFS) = 15.03 EFFECTIVE AREM ACRES) = 27.51 AVERAGED Fm(INCH/HR) _ .582 TOTAL AREA(ACRES) = 28.20 PEAK FLOW RATE(CFS) = 81.07 TC(MIN) = 11.95 END OF STUDY SUAMARY: — --------- TOTAL AREA(ACRES) = 28.20 EFFECTIVE AREA(ACRES) = 27.51 PEAK FLOW RATE(CFS) ---------------- _ 81.07 END OF RATIONAL METHOD ANALYSIS — _ _____