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HomeMy WebLinkAboutTract 12314 Retention Basin Report^ T 1• A C T , 1 X 3 1 4 HYDROLOOY REPORT VI. CATCH.BASIN HYDRAULIC CALLS 242 -25 VII, SUPPORTIHO DATAS: a) SOIL LOSSES, DEPTHIOUTFLOMISTORA6E RELATIONSHIP, POINT RAINFALL 257 -294 VIII. SAN BER'DO COUNTY RETENTION BASIN CRITERIA 295 -297 IX. BASELINE AVE. HYDRAULIC CAPACITY CALLS 298 -321 PREPARED IN THE OFFICE OF MADOIE AND ASSOCIATES, INC. CONSULTING CIVIL ENGINEERS 7H 142 -609 AND LAND PLANNERS ffi7ec a7eeria5l 1820 E. 16th Street 1124190 SANTA ANA, CALIFORNIA 92701 PHONE 714.835.2548 D e s c r i p t i o n P a g e I. INDEX TO PLATES AREAS 2 H. SUMMARY & CONCLUSION 3 -3C III. TABLE OF RESULTS 4 -5 IV. HYDROLOGY CALF. a) EX 02 6 -25 BSI Ey OFF: 26-45 c) EX 010 46 -65 d) EX 1325 66 -85 e) DEV. 02 86 -102 f) DEV. 010 103 -119 g) DEV. 025 120 -136 h) DEV. 0100 137 -153 i) UNRESTRICTED 02 OUTFLON 154 -155 AIW j) UNRESTRICTED 010 OVTFLON 156 -157 k) UNRESTRICTED 025 OUTFLON 158 -159 7) UNRESTRICTED 0100 OUTFLOV 160 -161 V. RETENTION BASIN INFLOY & OUTFLOtt HYDROORAPHS a) 02 162 -171 b) 010 172 -131 c) 025 182 -211 d) 0100 212 -241 = r VI. CATCH.BASIN HYDRAULIC CALLS 242 -25 VII, SUPPORTIHO DATAS: a) SOIL LOSSES, DEPTHIOUTFLOMISTORA6E RELATIONSHIP, POINT RAINFALL 257 -294 VIII. SAN BER'DO COUNTY RETENTION BASIN CRITERIA 295 -297 IX. BASELINE AVE. HYDRAULIC CAPACITY CALLS 298 -321 PREPARED IN THE OFFICE OF MADOIE AND ASSOCIATES, INC. CONSULTING CIVIL ENGINEERS 7H 142 -609 AND LAND PLANNERS ffi7ec a7eeria5l 1820 E. 16th Street 1124190 SANTA ANA, CALIFORNIA 92701 PHONE 714.835.2548 r _ t � — .rr• s rr– arc — .`� � .. C : r a �t ��I�t �t�at�71�1131�I�ilE.�'IE _ �� �E.att�rtttt�tttttwtttttss�l �1 .:� �it:Ii�iflEflltfi3l� .� �Oli9liff�l�ll ✓,? L��IILSII - , � I. SUMMARY AND CONCLUSION : THE COUNTY'S BASIC CRITERIA' FOR RETENTION BASIN DESIGNED ARE THE FOLLOWING: 1. POST DEVELOPMENT O OUTFLOW <_ 90X OF HISTORICAL G FLOW. 2. POST DEVELOPMENT Q OUTFLOW c 90X OF HISTORICAL Q FLOW. 'O. POST DEVELOPMENT G OUTFLOW <_ 90X OF HISTORICAL Q FLOW. 4. POST DEVELOPMENT Qioo OUTBLOW <_ 90X OF HISTORICAL G6 FLOW. TABLE 1 ON PAGE 4 IS A SUMMARY OF RESULTS WHICH COMPARES POST DEVELOPMENT OUTFLOW WITH PRE DEVELOPMENT FLOW. TABLE 2 PAGE 5 SHOWS THE OUTFLOW AS A PERCENTAGE OF HISTORICAL FLOW. BASED UPON THESE TABLES IT CAN BE CONCLUDED THAT RESTRICTED OUTFLOW AT THE RETENTION BASIN IS SUBSTANTIALLY LESS THAN THE HISTORICAL FLOW. IT IS IMPORTANT TO KEEP IN MIND THAT: a) THE PERCENTAGE SHOWN ON TABLE 2 IS THE RATIO TO THE 90% OF THE ACTUAL HISTORICAL FLOW, NOT THE FULL FLOW ITSELF. b) THE HISTORICAL FLOW COMPARISON WITH THE POST DEVELOPMENT OUTFLOW IS ONE STORM FREQUENCY LESS FOR Q10, Q25 & 0100 WITH THE EXCEPTION OF Q2. THEREFORE THE RESULTING CALCULATIONS HAS DEFINITELY PROVED THAT THE SITUATION ON BASELINE ROAD IS VASTLY IMPROVED THAN THE PRESENT SITUATION WITH PROPOSED INSTALLATION OF A RETENTION BASIN.. C 1. SEE PAGES 295 -297 181 II. EXPLANATION FOR CALCULATIONS SUBMITTED. �1rir� TiFH #I. ON PACES 6 THRU 25 ARE RATIONAL METHOD HYDROLOGY CALCULATIONS TO ESTABLISHED PEAK HISTORICAL FLOWS FO STORM FREQUENCIES Q2, Q5, Q10 AND Q25. ITEM #_. ON PACES 26 THRU 45 ARE RATIONAL METHOD HYDROLOGY CALCULATIONS , ASSUMING ALL OFFSITE AND ONSITE AREAS ARE DEVELOPED TO ESTABLISHED PEAK "Q" FOR STORM FREQUENCIES Q2, Q10, Q25 AND Q100. THE REASON FOR THESE CALCULATIONS ARE TWOFOLD: a) Q100 RUNOFF CALCULATIONS ARE USED FOR THE DESIGNED OF PROPOSED STORM RAIN LINE ON ALMERIA AVE. AND TO SIZE THE CATCHBASIN OPENING REQUIREDa. CB HYDRAULIC CALCULATIONS ARE ON PAGES 242 THRU � 256. b) ONCE PEAK "Qs FOR THE WHOLE TRIBUTARY AREA FOR STORM FREQUENC=IES Q2, Q10, Q25 AND Q100 ARE KNOWN, THESE ARE USED AS A BASIS OF COMPARISON TO THE PEAK "Qs" OBTAINED IN THE UNIT HYDROGRAPH METHOD ON PACE 165 FOR Q2, PACE 175 FOR Q10, PACE 185 FOR Q25 AND PAGE 215 FOR Q10 ITEM #i. ON PAGES 154 THRU 161 ARE RATIONAL METHOD CALCULATION OF PROPOSED DEVELOPED ONSITE AREA'THAT CANNOT BE PICKED UP BY THE PROPOSED STORM DRAIN ON ALMERIA AVE. FOR NOW AND BE DIRECTEL'= TO THE RETENTION BASIN. THEREFORE RUNOFF FOR THIS AREA IS ALLOWED TO FLOW UNRESTRICTED TO BASELINE ROAD . ITEM #4. ON PACES 162 THRU 241 ARE THE FLOOD ROUTING CALCULATIONS WITH THE RETENTION BASIN I PLA BEFORE FLOOD ROUTING CALLS ARE PERFORMED A UNIT HYDROGRAPH ARE FIRST ESTABLISHED TO DETERMINE THE PEAK "Q" FOR THIS METHOD. AT THIS JUNCTURE SEVERAL ATTEMPTS ARE MADE SCE THAT RESULTING PEAK "Q" IN THIS METHOD WILL, COINCIDE OR WILL CLOSELY MATCHED THE PEAK "n" OBTAINED ON ITEM 4 2 ABOVE. TO ACCOMPLISHED THESE ATTEMPTS THE BASIN FACTOR FOR THE TRIBUTARY AREA ARE ADJUSTED UNTIL THE DESIRED PEAK "! js" ARE ATTAINED. T HE REASON FOR. THIS ARE THE FOLLOWING: a) EQUAL PEAK "Qs" IN THE RATIONAL AND,UNIT HYDROGRAPH METHOD MEANS THE RESULTING "OUTFLOW" FROM THE FLOOD ROUTINE; CALLS CAN BE COMPARED WITH THE HISTORICAL FLOW OBTAINED BY RATIONAL METHOD ON ITEM 41 ABOVE. b) THE VOLUME EQUIVALENT OF RUNOFF "Qs" PER UNIT TIME INTERVAL IN A FEET ARE THE NUMBERS BEING STORED OR RETAINED ON THE RETENTION BASIN , SO IT IS ONLY LOGICAL THAT IF PEAK "Qs" ARE THE SAME OR NEARLY EQUAL FOR BOTH METHODS OF CALCULATIONS, THEN THE EQUIVALENT VOLUMES USED IN THE FLOOD ROUTING PROCEDURES ARE REPRESENTATIVE OF THE RUNOFF INTERVAL FOR THAT PARTICULAR STORM FREQUENCY. NO MULTI DAY INVESTIGATION WAS MADE FOR Q2 & Q10 STORM SINGE IT IS APPARENT FROM THE RESULTS THAT THE RETENTION BASIN WILL BE DRY AT THE END OF 24 HOURS. HOWEVER, A MULTI DAY INVESTIGATION WAS MADE FOR Q25 £ Q100 STORM AS THERE WERE SOME SMALL AMOUNT OF LEFTOVER STORAGE AT THE END OF THE IST 24 HOUR STORM. Cam] 3A ITEM #`= CAN PAGES 298 THR� � 321 ARE BASELINE ROAD HYDRAULIC= CAPACITY CALCULATIONS. THE CROSS SECTIONS STARTS APPROXIMATELY AT THE "CHICfEN RANCH " BOUNDARY. THESE CALCS ARE MEANT TO SHOW THAT PRESENTLY EXISTING RUNOFF "Q" TRIBUTARY TO BASELINE AVE. OVERTCPS CRCWNLINE ELEVATIONS EVEN IF "Q" USED ARE THE OUTFLOW Q100 OF THE PROPOSED RETENTION BASIN WHICH IS SHOWN ON TABLE 2 TO BE SUBSTANTIALLY LESS THAN THE PRESENT 9Q ". C� m WO Z- 7 b - - 11�., 2 LO �s 0GCUd%� o 'J ���' P � X02 1 /T�� � ����� - -- 3G 1GFY7721c715V- MADOLE & ASSOCIATES CIVIL ENGINEERS AND PLANNERS BY DATE _— CLIENT SHEET NO. OF�- CHECKED DATE JOB JOB NO. — v pwawr BL�7 "Q - . UNIQFSTi� /G7 0 - ZOT11i `-L _... _ f�S7D� %GAL 90--_1 - Of f�Ori/ _wrt w- . Fi2l�NL bGITJ�L�/•t� _ - ___- QL[rFGO W _AGO -- - - -� ?A ASE - - - - - -- �/� T . 87 a�__ e 041 �� ���k����L�� ~_ ASSOCIATES ' CIVIL ENGINEERS AND PLANNERS 8��I�� �� BY___�__DATB___�_____CLIENT ___~__ CHBCKED_-_____-DATG________}OB JOB NO. � . --�_-__�_� � � i -_-- _-'_____- _' ------�-------'� -----�-----' - --------�-� i � . . _ RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM BASED ON i SAN BERNARDINO COUNTY (SBC) 1983 HYDROLOGY 14 WA (C) Copyright 1983,1986 Advanced Engineering Software [AES) Especially prepared for: MADOLE AND ASSOCIATES * * * * * * * ** *DESCRIPTION OF RESULTS*####**###### # # * # # # # #* * * * # # # # # # * # # # # # * * # * * ## * TR 12314 EnISTING ONSITE & OFFSITE 92 * FONTANA # * JN 142 -609 1;17/90 [FILE En12314.0021 --------------------------------------------------------- USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: ------------------------------------------------ USER SPECIFIED STORM EVENT(YEAR) = 2.00 SPECIFIED MINIMUM PIPE SIZE(INCH) = 18.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRICTION SLOPE _ .95 10-YEAR STORM 60- MINUTE INTENSITY(INCH /RJURt) = 1.040 100 -YEAR STORM U- MINUTE INTENSITY(INCH /HOUR) = 1.540 COMPUTED RAINFALL INTENSITY DATA: STORM EVENT = 2.00 1-HOUR INTENSITY(INCH /HOUR) _ .6905 SLOPE OF INTENSITY DURATION CURVE _ .6000 SK HYDROLOGY MANUAL "C"-VALUES USED Advanced Engineering Software EAES) SERIAL No. I0665I VER. 3.3C RELEASE DATE: 2/20/86 { CCC!!!!!!<{!<!{ ICCCCl C<{! C{! C{{{! C{C!)}}}}} » >))) } } } } ))) } > } } } > } } } } i; } })) FLOW PROCESS FROM NODE 4.00 TO )ODE 100.00 IS CODE = 2 ---------------------------------------------------------------------------- )))) }RATIONAL METHOD INITIAL SUBAREA ANALYSIS{ {!!C --- ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS SINGLE FAMILY (1/4 ACRE) TC = K *[(LENGTH * *3) /(ELEVATION CHANGE)) * *.2 INITIAL SUBAREA FLOW- LENGTH : 600.00 UPSTREAM ELEVATION = 515.00 DOWNSTREAM ELEVATION = 501.50 ELEVATION DIFFERENCE = 13.50 TC = .393 *1( 600.00 * *3) /{ 13.50)) * *.2 = 10.334 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.923 SOIL CLASSIFICATION IS 'A" SINGLE-FAMILY {i /4 ACRE LOT) RUNOFF COEFFICIENT = .6569 SUBAREA RUNOFF(CFS) = 5.17 TOTAL AREA(ACRES) = 3.90 TOTAL RU10F(CFS) = 5.17 FLOW PROCESS FROM NODE 100.00 TO NODE 105.00 IS CODE = 6 ---------------------------------------------------------------------------- ? >;> \COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<< < UPSTREAM ELEVATION = 501.50 DOWNSTREAM ELEVATION = 488.50 STREET LENGTH(FEET) = 510.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTHtFEET) = 18.00 STREET CROS.FALL(DECIMAL) = .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLO)(CFS) = 7.80 STREET FLOWDEP TH (FEET) _ .33 HALFSTREET FLOODWIDTH(FEET) = 10.01 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.48 PRODUCT OF DEPTH&VELOCITY = 1.14 STREETFLOW TRAVELTIME(MIN) = 2.44 TC(MIN) = 13.27 2.00 YEAR RAINFALL !NTENSITY(INCH /HO R) = 1.707 SOIL CLASSIFICATION IS " A ' SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6658 SUBAREA AREA(ACRES) = 4.60 SUBAREA RUNOFF(CFS) = 5.23 SUMMED AREA(ACRES) = 8.50 TOTAL RUNOFF(CFS) = 10.39 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .35 HALFSTREET FLOODWIDTH(r"EET) = 11.04 FLOW VELOCITY(FEET /SEC.) = 3.89 DEPTH *VELOCITY = 1.35 FLOW PROCESS FROM NODE 105.00 TO NODE 106.00 IS CODE = 6 ---------------------------------------------------------------------------- >)>>>COMPUTE STREETFLOW TRAVELTIME THRU SUBAf ANC <tC ------------------------------ UPSTREAM ELEVATION = 438.50 DOWNSTREAM ELEVATION = 476.50 STREET LENGTH(FEET) = 505.00 CURB HEIGTH(INQU) = 6. STREET HALFWIDTH (FEET) = 18.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 12.67 STREET FLOWDEPTH(FEET) = .37 HALFSTREET FLOODWIDTH (FEET) = 12. 07 AVERAGE FLOW VELOCITY(FEET /SEC.) = 4.02 PRODUCT OF DEPTH&VELOCITY = 1.48 STREETFLOW TRAVELTIME(MIN) = 2.09 TC(MIN) = 15.37 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.564 SOIL CLASSIFICATION IS H A N SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6489 SUBAREA AREA(ACRES) = 4.50 SUBAREA RUNOFF(CFS) = 4.57 SURD AREA(ACRES) = 13.00 TOTAL RUNOFF (CFS) = 14.96 END OF SUBAREA STREETFLOW HYDRAULICS: O DEPTH(FEET) _ .39 HALFSTREET FLOODWIDTH(FEET) = 13.10 FLOW VELOCITY(FEET /SEC.) = 4.08 DEPTH *VELOCITY = 1.58 - - FLOW PROCESS FROM NODE 106.00 TO NODE 110.00 IS CODE = 6 ------------ - - - - -- - ? ?):COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA «'<t UPSTREAM ELEVATION = 476.50 DOWNSTREAM ELEVATION = 468.00 STREET LENGTH(FEET) = 465.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 16.84 STREET FLOWDEPTH(FEET) _ .42 HALFSTREET FLOODWIDTH(FEET) = 14.65 AVERAGE FLOW VELOCITY(FEETISEC.) = 3.72 PRODUCT OF DEPTH&VELOCITY = 1.56 STREETFLOW TRAVELTIME (MIN) = 2.08 TC(MIN) = 17.45 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.449 SOIL CLASSIFICATION IS "A" SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6329 SUBAREA AREA(ACRES) = 4.10 SUBAREA RUNOFF(CFS) = 3.76 SHIMMED AREA(ACRES) = 17.10 TOTAL RUNOFF(CFS) = 18.72 END OF SUBAREA STREETFLOW HYDRAULICS: DEFTH(FEET) _ .43 HALFSTREET FLOODQIDTH(FEET) = 15.16 FLOW VELOCITY 'FEET/SEC. ) = 3.87 DEPTH *VELOCITY = 1.66 FLOW PROCESS FROM NODE 110.00 TO NODE 115.00 IS CODE = 6 ------------------------------7---------------------------- . COMPUTE STREETFLOW TkAV . ELTIME THR3 i SUBAREA'- -- UPSTREAM ELEVATION = 468.00 DOWNSTREAM ELt"'ATION = 464.50 STREET LENGTH(FEET) = 365.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 13.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = .` **TRAVEL TT COMP. USING if'iN FLOW(CFS) = 21.71 STREET FLOWijEPTH(FEET) _ .43 HALFSTREET FLOODWIDTH(FEET) = 17.74 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.32 PRODUCT OF DEPTH&VELOCITY = 1.60 STREETFLOW TRAVELTIME(MIN) = 1.83 TC(MIN) = 19.2' 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.365 SOIL CLASSIFICATION IS "A" SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6195 SUBAREA AREA(ACRES) = 7.10 SUBAREA RUNOFF(CFS) = 6.00 SUMMED AREA(ACRES) = 24.20 TOTAL RUNOFF(CFS) = 24.72 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) = .50 HALFSTREET FLOODWIDTH(FEET) = 18.00 FLOW VELOCITY(FEET /SEC.) = 3.50 DEPTH *VELOCITY = 1.73 FLOW PROCESS FROM NODE 115.00 TO NODE 120.00 IS CODE = 6 ---------------------------------------------------------------------- - - - - -- f__:_ COMPUTE - STREETFL_ W TkAVEiTIME THkU UBAkEA (; { {_ ______________________ UPSTREAM ELEVATION = 464.50 DOWNSTREAM ELEVATION = 462.50 STREET LENGTH(FEET) = 410.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 13.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 ce * * TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 30.07 ** *STREET FLOWING FULL * ** NOTE: STREETFLOW EKEEDS TOP OF CURB. THE FOLLOWING STREETFLOW RESULTS ARE BASED ON THE ASSUMPTION THAT NEGLIBLE FLOW OCCURS OUTSIDE OF THE STREET MNEL. THAT IS, ALL FLOW ALONG THE PARJ(WAY, ETC., IS NEGLECTED. STREET FLOWDEPTH(FEET) _ .57 HALFSTREET FLOODWIDTH(FEET) = 13.00 AVERAGE FLOW VELOFITY(FEET /SEC.) = 3.04 PRODUCT OF DEPTH&VELOCITY = 1.75 STREETFLOW TRAVELTIME(MIN) = 2.24 TC:(MIN) = 21.53 2.00 YEAR RAINFALL IiNTENSITY(INCH /HOUR) = 1.277 SOIL CLASSIFICATION IS "A° SINGLE- FAMILY(1/4 ACRE LOT) RUNOFF COEFFICIENT = .6033 SUBAREA AREA(ACRES) = 13.30 SUBAREA RUNOFF(CFS) = 10.72 %,' D AREA(ACRES) = 38.10 TOTAL RUNOFF(CFS) = 35.44 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .61 HALFSTREET FLOODWIDTH(FEET) = 18.00 FLOW VELCICITY(FEET /SEC.) = 3.14 DEPTH *VELOCITY = 1.33 ** xx* xxxxxxxxx** xx** xxxxx* x*** xx * *xx * * *xx *x * * *x *xxxxx * *xx * * * * ** *xxx *xx* *xxx* FLOW PROCESS FROM NODE 120.00 TO NODE 125.00 IS CODE = 6 ---------------------------------------------------------------------- - - - - -- (" '%>- ?COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA('((C UPSTREAM ELEVATION = 462.50 DOWNSTREAM ELEVATION = 460.00 STREET LENGTH(FEET) = 530.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 13.00 STREET CROtSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSMEETS CARRYING RUNOFF = 2 * *TRAVELTIME COWED USING MEAN FLOW(CFS) = 41.71 ***STREET FLOWING FULL * *x NOTE: STREETFLOW EKEEDS TOP OF CURB. THE FOLLOWING STREETFLOW RESULTS ARE BASED ON THE ASSiTDON THAT NEGLIBLE FLOW OCCURS OUTSIDE OF THE STREET CHANNEL. THAT IS, ALL FLOW ALONG THE PARKWAY, ETC., IS NEGLECTED. STREET FLOWDEPTH(FEET) _ .63 HALFSTREET FLOODWIDTH(FEET) = 18.00 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.48 PRODUCT OF DEPTH&VELOCITY = 2.20 STREETFLOW TRAVELTIME(MIN) = 2.54 TC(MIN) = 24.07 2.00 YEAR RAINFALL INTEN(SITY(INCH /HOUR) = 1.135 SOIL CLASSIFICATION IS "A" SINGLE-FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .5867 SUBAREA AREA(ACRES) = 17.30 SUBAREA RUNOFF(CFS) = 12.55 SUMMED AREA(ACRES) = 56.00 TOTAL RUNOFF(CFS) = 47.'33 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .67 HALFSTREET FLOODWIDTH(FEET) = 18.00 FLOW VELOCITY(FEET /SEC.) = 3.58 DEPTH *VELOCITY = 2.41 *x * * *xx * * * * * * * * *x * * *x * * * * * * ** xxx * * * * * * * * * *xx * * *xx * *x *xx * ** *xxx * * *xx * * * * * * ** FLOW PROCESS FROM NODE 125.00 TO NODE 130.00 IS CODE = 6 ,: ?>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA((((( UPSTREAM ELEVATION = 450.00 DOWNSTREAM ELEVATION = 456.50 STREET LENGTH(FEET) = 405.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING Mme! FLOW(CFS) = 50.41 ** *STREET FLOWING FULL* ** NOTE: STREETFLOW E LEEDS 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 PARk'WAY, ETC., IS NEGLECTED. STREET FLOWDEPTH(FEET) _ .61 HALFSTREET FLOODWIDTH(FEET) = 13.00 AVERAGE FLOW VELOCITY(FEET /SEC.) = 4.47 PRODUCT OF DEPTH&VELOCITY = 2.74 STREETFLOW TRAM TIMtE(MIN) = 1.51 TC(MIN) = 25.53 2.110 YEAR RAINFALL INTE%ITY(INCH /HOUR) = 1.152 SOIL CLASSIFICATION IS "A" SItiGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .5769 SUBAREA AREA(ACRES) = 7.30 SUBAREA RUNOFF(CFS) = 4.35 SUMMED AREA(ACRES) = 53.30 TOTAL RUNOFF(CFS) = 52.84 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .63 HALFSTREET FLOODWIDTH(FEET) = 13.00 FLOW VELOCITY(FEET /SEC.) = 4.41 DEPTH *VELOCITY = 2.79 xx *x * *xxxxxxxx* xxxxx *x* xxxx* xxxxxxx *x *x *xxxxxxxxxxx *xx *x * * ** *xxx *xx * * *x *xx *: FLOW PROCESS FROM NODE 130.00 TO NODE 130.00 IS CODE = 1 - -------------------------------------------------------------------- - - - - -- ;:.:)DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE((((( CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MINUTES) = 25.53 RAINFALL INTENSITY (INrCH./HOUR) = 1.15 TOTAL STREAM AREA (S) = 63.30 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 52.34 x *xx * * *x *xxxx *xxxx *x *xx *xxxxxxxxxx :x ** xxx* xxx* :xxxxxx *xxx *xx *xxx * * * * *xx *xxxx FLOW PROCESS FROM NODE 5.00 TO NODE 121.00 IS CODE = 2 ---------------------------------------------------------------------------- )))))RATIONAL METHOD INITIAL SUBAREA ANALYSIS((((( -- - - - - -- ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS SINGLE FAMILY (1/4 ACRE) TC = K *I(LENGTH * *3)/(ELEVATION CHANGE)] * *.2 INITIAL SUBAREA FLOW-LENGTH = 500.00 UPSTREAM ELEVATION = 509.00 DOWNSTREAM ELEVATION = 497.00 ELEVATION DIFFERENCE = 12.00 TC = .393 *I( 600.00 * *3) /( 12.00)] * *.2 = 11.092 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.901 SOIL CLASSIFICATION IS "A" SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6346 SUBAREA RUNOFF(CFS) = 5.34 TOTAL AREA(ACRES) = 4.10 TOTAL RUNOFF(CFS) = 5.34 * x *xxxxxxxx *xxxxxxxxxxxxxxxxxxxxx xxx ** *xxxxxx * * * * * * * * * * * * *x *xxx * *xx *xxxxxxx* FLOW PROCESS FROM NODE 121.00 TO NODE 1 IS C01X = 6 ---------------------------------------------------------------------------- >>>)iCOMPUTE STREETFLOW TRAVELTIME THRU SUBAREA <<((< C4� UPSTREAM ELEVATION 497.00 DOWNSTREAM ELEVATION = 494.00 STREET LENGTH(FEET) = 495.00 CURB HEIGTH(INCHES) -= A. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) = .0200 SPECIrFIED Nl-QW OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 7.98 STREET FLOWDEPTH(FEET) = .40 HALFSTREET FLOODWIDTH(FEET) = 13.61 AVERAGE FLOW VELOCITY(FEET /SEC.) = 2.00 PRODUCT OF DEPTH&VELOCITY = .80 STREETFLOW TRAVELTINE(MIN) = 4.13 TC(MIN) = 15.22 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.573 SOIL CLASSIFICATION IS "A" SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6500 SUBAREA AREA(ACRES) = 4.90 SUBAREA RUNOFF(CFS) = 5.01 SUMMED AREA(ACRES) = 9.00 TOTAL RKFF(CFS) = 10.35 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) = .43 HALFSTREET FLOODWIDTH(FEET) = 15.16 FLOW VELOCITY(FEET /SEC.) = 2.14 DEPTH *VELOCITY = .92 xxxx * *x * * * * ** xxx ** xxxxx * *xxxxxx *xxxx * *x *xx * * * *x *xxx * * * * *x * *x * * * * * * *xx * * * *xx* FLOW PROCESS FR NODE 126.00 TO NODE 127.00 IS CODE = 6 ---------------------------- ------------------------------------------------ >) »)COMPUTE STREETFLOW TRAVELTIpE THRU SUBAREA((c({ UPSTREAM ELEVATION = 494.00 DOWNSTREAM ELEVATION = 488.00 STREET LENGTH(FEET) = 640.00 CURB HEIGTH(INC#ES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMIAL) = .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME C'GPUTED USING MEAN FLOW(CFS) = 14.38 STREET FLOWDEPTH(FEET) = .44 HALFSTREET FLOODWIDTH(FEET) = 15.68 AVERAGE FLOW VELOCITY(FEET /SEC.) = 2.79 PRODUCT OF DEPTH&VELOCITY = 1.23 STREETFLOW TRAVELTIME(MIN) = 3.81 TC(MIN) = 19.04 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.375 SOIL CLASSIFICATION IS "A" SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6212 SUBAREA AREA(ACRES) = 9.40 SUBAREA RLWT(CFS) = 8.03 SUMMED FAA KRES) = 18.40 TOTAL RUNOFF(CFS) = 18.37 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) = .47 HALFSTREET FLOODWIDTH(FEET) = 17.23 FLOW VELOCITY(FEET /SEC.) = 2.98 DEPTH *VELOCITY = 1.40 xxxx* *x * ** xxx *xxxxxx *x* xxx* xxx *xxxxxxxxxxxxxxx *xxxxx * *xx* *xxxxx *x *xx * * *xx * *x FLOW PROCESS FROM NODE 127.00 TO NODE 128.00 IS CODE = 6 ---------------------------------------------------------------------------- » »)COMPUTE STREETFLOW TRAVELTIME - THKI SUBAREA(((({ - ------------------------------ UPSTREAM ELEVATION = 488.00 DOWNSTREAM ELEVATION = 477.00 STREET LENGTH(FEET) = 495.00 CURB HEIGTH(INCHES) = 6. O STREET HALFWIDTH(FEET) = 18.00 STREET CROS _ .0200 SPECIFIED NUMBER OF HALFSTREETS C ARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 20.54 STREET FLOWDEPTH(FEET) _ .43 HALFSTREET FLOODWIDTH(FEET) = 15.16 AVERAGE FLOW VELOCITY(FEET /SEC.) = 4.25 PRODUCT OF DEPTH&VELOCITY = 1.83 STREETFLOW TRAVELTIME(MIN) = 1.94 TC(MIN) = 20.99 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.297 SOIL CLASSIFICATION IS ° A" SINGLE-FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6075 SUBAREA AREA(ACRES) = 5.50 SUBAREA RUNOFF(CFS) = 4.33 SUMMED AREA(ACRES) = 23.90 TOTAL RUNOFF(CFS) = 22.71 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .44 HALFSTREET FLOODWIDTH(FEET) = 15.68 r'LOW VEUJCITY(FEET /SEC.) = 4.41 DEPTH *VELOCITY = 1.94 FLOW PROCESS FROM NODE 128.00 TO NODE 129.00 IS CODE = 6 ---------------------------------------------------------------------- - - - - -- >» »COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA« « < UPSTREAM ELEVATION = 477.00 DOWNSTREAM ELEVATION = 467.00 STREET LENGTH(FEET) = 505.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEE /I = 18.00 STREET CROSSFALL(DECIMAL) _ .0 00 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 24.72 STREET FLOWDEPTH(FEET) _ .46 r HALFSTREET FLOODWIDTH(FEET) = 16.71 AVERAGE FLOW VELOCITY(FEETISEC.) = 4.25 PRODUCT OF DEPTH&VELOCITY = 1.96 STREETFLOW TRAVELTIME(MIN) = 1.93 TC(MIN) = 22.97 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.229 SOIL CLASSIFICATION IS °A° SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .5940 SUBAREA AREA(ACRES) = 5.50 SUBAREA RUNOFF(CFS) = 4.01 SUMMED AREA(ACRES) = 29.40 TOTAL RUN0FF(CFS) = 26.72 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .47 HALFSTREET FLOODWIDTH(FEET) = 17.23 FLOW VELOCITY(FEET /SEC.) = 4.33 DEPTH *VELOCITY = 2.04 FLOW PROCESS FROM NODE 129.00 TO NODE 130.00 IS CODE = 6 ---------------------------------------------------------------------------- >» »COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA « «< ------ - - - - -- -- UPSTREAM ELEVATION = 467.00 DOWNSTREAM ELEVATIO0( = 456.50 STREET LENGTH(FEET) = 470.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NPiBER OF HALFSTREETS CARRYING RUNOFF = 2 **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 23.61 STREET FLOWDEPTH(FEET) _ .47 HALFSTREET FLOODWIDTH(FEET) = 17.23 AVERAGE FLOW VELOCITY(FEET /SEC.) = 4.64 PRODUCT OF DEPTH&VELOCITY = 2.18 STREETFLOW TRAVELTI,ME(MIN) = 1.69 TC(MIN) = 24.66 O 2 2,00 YEAR RAINFALL INTENSIT'r(INCH /HOUR) = 1.171 SOIL CLASSIFICATION IS "A" SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .5829 SUBAREA AREA(ACRES) = 5.50 SUBAREA RUNOFF(CFS) = 3.77 SUMMED AREA(ACRES) = 34.90 TOTAL RUNOFF(CFS) = 30.49 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH (FEET) _ .48 HALFSTREET FLOODWIDTH(FEET) = 17.74 FLOW VELOCITY(FEET /SEC.) = 4.67 DEPTH *VELOCITY = 2.25 xxxx* x* xx** x*** x:* x** x** xxx* xxxxxxx*** xxxxxxxx *x *xxxx : *xxx **x *xxx *xxx * *xxx :x FLOW PROCESS FROM NODE 130.00 TO NODE 130.00 IS CODE = 1 ---------------------------------------------------------------------------- > >> »DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE«<« » > >AND CC4 PUTE VARIOUS CONFLUENCED STREAM VALUES( <(< CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MINUTES) = 24.66 RAINFALL INTENSITY (INCH. /HOUR) = 1.18 TOTAL STREAM AREA (ACRES) = 34.90 TOTAL STREAM RUNOFF(CFS) AT CO fLUENCE = 30.49 CONFLUENCE INFORMATION: STREAM RUNOFF TIME INTENSITY NUMBER (CFS) (MIN.) (INCHIHOUR) 52.84 25.58 1.152 30.49 24.66 1.177 RAINFALL INTENSITY AND TIME OF CtWENTRATION RATIO FORMULA(SPC) USED FOR 2 STREAMS. VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS: 82.67 81.43 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: RUNOFF(CFS) = 8'2.57 TIME(MINrUTES) = 25.576 TOTAL AREA(ACRES) = 98.20 xxxxx* xx**** x* x* xxxx** x xx** xx* x** xx*** xx* x* x* xx ** *xxxxx *xxxx *xxxx *xx *x *xxxx* FLOW PROCESS FROM NODE 130.00 TO NODE 135.00 IS CODE ---------------------------------------------------------------------------- ))) > >COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA(<<(( UPSTREAM ELEVATION = 456.50 DOWNSTREAM ELEVATION = 440.00 STREET LENGTH(FEET) = 700.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 85.37 ** *STREET FLOWING FULL * ** 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) _ .61 HALFSTREET FLOODWIDTH(FEET) = 18.00 AVERAGE FLOW VELOCITY(FEET /SEC.) = 7.56 PRODUCT OF DEPTH &VELOCITY = 4.64 STREETFLOW TRAVELTIME(MIN) = 1.54 TC(MIN) = 27.12 2.i�C YEAR RAINFALL INTE?iSiTY(INCHiHOiR) = 1.I12 O SOIL CLASSIFICATION IS "A" SINGLE-FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .5672 SUBAREA AREA(ACRES) = 3.60 SUBAREA RUNOFF(CFS) = 5.42 SUMMED AREA(ACRES) _ ' 106.30 TOTAL RUNOFF(CFS) = 88.04 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .63 HALFSTREET FLOODWIDTH(FEET) = 13.00 FLOW VELOCITY(FEET /SEC.) = 7.35 "DEPTH #VELOCITY = 4.65 FLOW PROCESS FROM NODE 135.00 TO NODE 136.00 IS CODE = 5 ---------------------------------------------------------------------- - - - - -- > >> »COMPUTE TRAPEZOIDAL- CHANNEL FLOW« «< » » >TRAVELTIME THRU SUBAREA << (< < UPSTREAM NODE ELEVATION = 440.00 DOWNSTREAM NODE ELEVATION = 427.50 CHANNEL LENGTH THRU SUBAREA(FEET) = 445.00 CHANNEL BASE (FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 88.04 FLOW VELOCITY(FEET /SEC) = 3.90 FLOW DEPTH(FEET) _ .67 TRAVEL TIME (MIN.) = 2.11 TC (MIN.) = 29.3 FLOW PROCESS FROM 11N7DE 136.00 TO NODE 136.00 IS CODE = 8 ---------------------------------------------------------------------------- >' »ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< - - -- = 2.00 YEAR RAINFALL INTENSITY (INCH /HOUR) = 1.063 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .2583 SUBAREA AREAiACRES) = 2.10 SUBAREA RUNOFF(CFS) _ .58 TOTAL AREAiACRES) = 103.90 TOTAL RUNOFF(CFS) = 38.67 TC(MIN) = 29.23 FLOW PROCESS FROM NODE 136.00 TO NODE 140.00 IS CODE = 5 ---------------------------------------------------------------------------- > > > > COMPUTE TRAPEZOIDAL -CHANNEL FLOW« « < >» »TRAVELTIME THRU SUBAREA ««< UPSTREAM NODE ELEVATION = 427.50 DOWNSTREAM NODE ELEVATION = 410.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 515.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.700 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA (CFS) = 88.67 FLOW VELOCITY (FEET /SEC) = 4.32 FLOW DEPTH(FEET) _ .64 TRAVEL TIME (MIN.) = 1.94 TC (MIN.) = 31.22 ** xxxx* xx** xxx** x*** xxx* xxxxxx* x**** x* xx* xxx* xx * *x * * * *xxxx *xxxx *xx * *x *x * *xx* FLOW PROCESS FROM 140DE 140.00 TO NODE 140.00 IS CODE = 8 ---------------------------------------------------------------------- - - - - -- >> » >ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «< 2.00 YEAR RAINFALL INTENSITY (INCH /HOUR) = 1.0:.4 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .2345 SUBAREA AREA(ACRES) = 4.70 SUBAREA RUNOFF(CFS) 1.13 TOTAL AREA(ACRES) = 113.60 TOTAL RLWF(CFS) = $9.$0 TC (MIN) = 31.22 FLOW PROCESS FROM NODE 140.00 TO NODE 145.00 IS CODE = 5 ---------------------------------------------------------------------------- 5 }> >>C0MPUTE TRAPEZOIDAL - CHANNEL FLOW <( «< ?; > >TRAVELT!ME THRU SUBAREA( < < C( -------------------------------- UPSTREAM (ODE ELEVATION = 417.50 DOWNSTREAM NODE 1LEVATION = 410.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 215.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CrS) = $9.$0 FLOW 'V'ELOCITY(FEET /SEC) = 4.3$ FLOW DEPTH(FEET) _ .64 TRAVEL TIME(MIN.) = .$2 TC(MIN.) = 32.04 # * ** xxx *xx * ** xxx * * * *x * ** xxx * * *x * * * *x * * * * * ** xxx * # * * *xx * * *x * * * * * * * *xx * * *x * * *x* FLOW PROCESS FROM NOCE 145.00 TO NODE 145.00 IS CODE _ $ ---------------------------------------------------------------------------- iri % ADDITION OF SUBAREA TO MAINLINE PEAK FLOW(((( ---- - 2.00 YEAR RAINFALL INTENSITY(INCH /HOAR) = 1.006 SOIL CLASSIFICATION IS "A" C UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .2249 SUBAREA AREA(ACRES) = 5.10 SUBAREA RUNOFF(CFS) = 1.15 TOTAL AREA(ACRES) = 11$.70 TOTAL R WFF(CFS) = 90.95 TC(MIN) = :2.04 ##* x##* xx # * *x* # *xx * *x # # *x # * *xx * * # * #xx# ## xxx*# # #xx * # * # * #x # *xx ** * # * * * * *xx # *xx# FLOW PROCESS FROM NODE 145.00 TO NODE 146.00 IS CODE = 5 ---------------------------------------------------------------------------- >> % /> >CCmPUTE TRAPEZIDAL- CHANNEL FLOW< «« ? > ? }TRAVELTIME THRU SUBAREA < <(<< UPSTREAM NODE ELEVATION = 410.00 DOWNSTREAM NODE ELEVATION = 401.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 415.00 C1iANVEL BASE(FEET) = .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 90.95 FLOW VELOCITY(FEET /SEC) = 3.6$ FLOW DEPTH(FEET) = .70 TRAVEL TIME (MIN.) = 1.$$ TC(MIN.) = 33.92 FLOW PROCESS FROM NODE 146.00 TO NODE 146.00 IS CODE ---------------------------------------------------------------------------- ..)1 >ADDITION OF SEA TO MAINLINE PEAK FLOW <(((( ----------------- - - - - -- 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = .972 SOIL CLASSIFICATION IS "A" UNDE'V'ELOPED WATERSHED RUNOFF COEFFICIENT = .2031 S SUBAREA AREA {ACRES) = 3.30 SUBAREA RUNOFF(CFS) _ .65 TOTAL AREA(ACRES) = 122.00 TOTAL RUNOFF(CFS) = 41.60 TC(MIN) = 33.92 * x*#*# x### xxx### x###* x### xxx## x#### xx#* xxx##* * * # # # # # # # #x # * # # * * * *x * * *x * *xxx## FLOW PROCESS FROM NODE 146.00 TO NODE 146.00 IS CODE = 1 ---------------------------------------------------------------------------- > >} }}DESIGNATE INDEPENDENT STREAM FOR C3 FLUENCEC< «< CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCEENTRATION(MINUTES) = 33.92 RAINFALL INTENSITY (INCH. /HOUR) _ .97 TOTAL STREAM AREA (ACRES) = 1 "".00 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 91.60 *# x***##* xx##*#*#***# x**#* x## x# xx### x## xxx# x* * # # # *xx * # # # * * * * * * * * * * * * # # # * # # #* FLOW PROCESS FROM NODE 6.00 TO NODE 143.00 IS CODE = 2 ---------------------------------------------------------------------- - - - - -- > > >� }RATIONAL METHOD INITIAL SUBAREA ANALYSIS << « < ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS: UNDEVELOPED WITH FAIR COVER TC = K *I(LENGTH * *3) /(ELEVATION CHAS)] * *.L INITIAL SUBAREA FLOW - LENGTH = 550.00 UPSTREAM ELEVATION = 448.00 DOWNSTREAM ELEVATION = 435.00 ELEVATION DIFFERENCE = 13.00 TC = .709 *I( 550.00 * *3) /( 13.00)1 * *.L = 13.721 2.00 YEAR RAINFALL INTENSITY (INCHUHOUR) = 1.389 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .3971 SUBAREA RUNOFF(CFS) = 1.10 TOTAL AREA(ACRES) = 2.00 TOTAL RUNOFF(CFS) = 1.10 FLOW PROCESS FROM NODE 148.00 TO NODE 147,00 IS CODE = 5 ---------------------------------------------------------------------------- » » >COMPUTE TRAPEZOIDAL- CHANNEL FLOW « «< » » >TRAVELTIIE THRU SUBAREA « «< UPSTREAM NODE.ELEVATION = 435.00 DOWNSTREAM NODE ELEVATION = 416.00 CHANNEL LENGTH THRU SUBAREA (FEET) = 985.00 CHAnBR BASE (FEET) _ .00 °Z° FACTOR = 50.000 M NINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 1.10 FLOW VELOCITY(FEETISEC) = 1.12 FLOW DEPTH(FEET) _ .14 TRAVEL TIME(MIN.) = 14.71 TC(MIN.) = 33.44 FLOW PROCESS FROM NODE 147.00 TO NODE 147.00 IS CODE = 8 - ---------------=---------------------------------------------------------- } }> >> ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« «( .00 YEAR RAINFALL INTENSITY(INCH/HOUIR) _ .981 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .2086 SUBAREA AREA(ACRES) = 3.50 SUBAREA RUNOFF(CFS) _ .72 TOTAL AREA(ACRES) = 5.50 TOTAL RUNOFF(CFS) = 1.82 TC(MIN) = 33.44 xttx** xxttttxtt* tx** txtt*** xt** txxttt** txtttx * *xtxxxtx * * *xt *tt *xtxx *t * * *xtxx FLOW PROCESS FROM NODE 147.00 TO NODE 146.00 IS CODE = 5 ---------------------------------------------------------------------------- » » >COMPUTE TRAPEc'OIDAL- CHANNEL FLOW« «< »> >>TRAVELTIME THRU SUBAREA« «< UPSTREAM NODE ELEVATION = 416.00 DOWNSTREAM NODE ELEVATION = 401.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 610.00 CHANNEL BASE(FEET) = .00 " ' FACTOR = 50.300 MANNINGS FACTOR = .030 MAXIMUM DEPTH (FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 1.32 FLOW VELOCITY(FEET /SEC) = 1.23 FLOW DEPTH(FEET) _ .17 TRAVEL TIME(MIN.) = 9.07 TC(MIN.) = 42.50 x** x: x* x* x** xxx*** xxxx* x** xxxx* xx** xxxxxxxxxxtxxxxxxxxxx *xxxxx * *xx *xxxx *xxxx FLOW PROCESS FROM NODE 146.00 TO NOI:FE 146.00 IS CODE = 3 ---------------------------------------------------------------------- - - - - -- ,O MADDITION OF SUBAREA TO MAINLINE PEAS: FLOW< <<< 2.00 YEAR RAINFALL INTENSITY(INCHIHOUR) = .549 SOIL CLASSIFICATION IS °A" / UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .1093 1 SUBAREA AREA(ACRES) = 2.00 SUBAREA RUPOFF(CFS) _ .19 TOTAL AREA KRES) = 7.50 TOTAL RUK FF(CFS) = 2.00 TC(MIN) = 4250 xtx** xxxxt*** x* t**** xx** xx* xx** x** x** xt* t** ttxtxtx * *xx * *xx * *xxtt * * *xxx ** *txx FLOW PROCESS FROM NODE 146.00 TO NODE 146.00 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(MIMMS) = 42.50 RAINFALL INTENSITY (INCH. /FOUR) _ .85 TOTAL STREAM AREA (ACRES) = 7.50 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 2.00 CONFLUENCE INFORMATION: STREAM RUFF TIME INTENSITY NUMBER (CFS) (MIN.) (INCH /HOUR) 1 91.60 33.92 .972 2 2.00 42.50 .249 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO FORMIULA(SBC) USED FOR 2 STREAMS. VARIOUS CONFLUENGED RUNOFF VALUES ARE AS FOLLOWS: 93.20 32.01 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: RUNOFF(CFS) = 93.20 TIME(MINUTES) = 33.913 O TOTAL AREA(ACRES) = 129.50 FLOW PROCESS FROM NODE 146.00 TO NODE 170.00 IS CODE _ 5 »: >COMPUTE TRAPEZOIDAL- CHANNEL FLOW« «< >) >))TRAVELTIME THRU SUBAREA« << UPSTREAM NODE ELEVATION = 401.00 DOWNSTREAM NODE ELEVATION = +94.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 425.00 CHANNEL BASE(FEET) = .00 nZH FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 93.20 FLOW VELOCITY(FEET /SEC) = 3.18 FLOW DEPTH(FEET) _ .77 TRAVEL TIME(MIN.) = 2.23 TC(MIN.) = 36.15 FLOW PROCESS FROM ,NODE 170.00 TO NODE 170.00 10 CODE = 8 ---------------------------------------------------------------------- - - - - -- > »))ADDIt'ION OF SUBAREA TO MAINLINE PEAK FLOW <<:ti< 2.00 YEAR RAINFALL iNTENSITY(INCH /HOUR) SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .1779 SUBAREA AREA(ACRES) = 1.50 SUBAREA RUNOFF(CFS) TOTAL AREA(ACRES) = 131.00 TOTAL Ri F(CFS) = 93.45 r TC(MIN) = 36.15 FLOW PROCESS FROM NODE 170.00 TO NODE 175.00': IS CODE = 5 ---------------------------------------------------------------------------- OMPUTE TRAPEZOIDAL -CHAN EL FLOW( "< >>>)TRAVELTIME THRU SUBAREA « «< UPSTREAM NODE ELEVATION = 394.00 DOWNSTREAM NODE ELEVATION = 382.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 660.00 CHANNEL BASE (FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .020 MAXIMUM DEPTH(FEET) = 2.00 CHANEL FLOW THRU SUBAREA(CFS) = 93.45 FLOW VELOCITY(FEETISEC) = 4.55 FLOW DEPTH(FEET) _ .64 TRAVEL TIME(MIN.) = 2.42 TC(MIN.) = 38.56 FLOW PROCESS FROM NODE 175.00 TO NODE 175.00 IS CODE = 8 ---------------------------------------------------------------------- - - - - -- ) >) > >ADDITION OF SUBAREA TO MAINLINE PEAK FLOW « < <:< -------- - - - - -- 2.00 YEAR RAINFALL INTENSITY(INCHIHOUR) = .900 SOIL CLASSIFICATION IS "A" _ SINGLE- FAMILY(1 - ACRE LOT) RUNOFF COEFFICIENT = .2911 SUBAREA AREA(ACRES) = 11.10 SUBAREA PUNOFF(CFS) 2.91 TOTAL AREA(ACRES) = 142.10 TOTAL R12NOFF(CFS) = 96.36 TC(MIN) = 38.56 ***** x** xx* xxxx* xxx: x:* x** x* x* x** xx** x: xx** x* x *x * * * *x * *xxx *xx * *x *xxx *xxxx *xx FLOW PROCESS FROM NODE 175.00 TO NODE 175.00 IS CODE = 1 ---------------------------------------------------------------------------- > > > > >DESIGNATE INDEPENDENT STREAM FOR CONFLUENLE,�'< < CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TINE OF CONCENTRATION (MINUTES) = 33.56 RAINFALL INTENSITY (INCH. /HOUR) _ .90 TOTAL STREAM AREA (ACRES) = 142.10 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = %.36 FLOW PROCESS FROM NODE 7.00 TO NODE 150.00 IS CODE = 2 ---------------------------------------------------------------------- - - - - -- > >, *RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<( < ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS: UNDEVELOPED WITH FAIR COMER TC = K *t (LENGTH * *3) /(ELEVATION CHANGE)I * *.2 INITIAL SUBAREA FLOW- LENGTH = 730.00 UPSTREAM ELEVATION = 468.00 DOWNSTREAM ELEVATION = 457.00 ELEVATION DIFFERENCE = 11.00 TC 941 2.00 YEAR RAINFALL INTENSITY (INCH /HOUR) = 1. 29 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .3384 SUBAREA RUNOFF (CFS) = 1.96 TOTAL AREA(ACRES) = 4.70 TOTAL RUNOFF (CFS) = 1.96 * xx******** xxxx*** x******* x*** x****** x**** x** x *x *xxx * * * * *xx *x * * * * * * *x * ** *x *x FLOW PROCESS FROM NODE 150.00 TO NODE 151.00 IS CODE = 5 ---------------------------------------------------------------------------- % > > >COMPUTE TRAPEZOIDAL - CHANNEL FLOW« «< » » >TRAVELTIME THRU SUBAREA<< «< UPSTREAM NODE ELEVATION = 457.00 DOWNSTREAM NODE ELEVATION = 451.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 305.00 CKW4EL BASE(FEET) = .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CH FLOW THRU SUBAREA (CFS) = 1.96 FLOW VELOCITY (FEET /SEC) = 1.32 FLOW DEPTH(FEET) _ .17 TRAVEL TIME (MIN.) = 3.84 TC(MIN.) = 26.73 x*** x**** xxx* x**** xx* x********* x* x***** x*** xx * * * * * * * * * *x * * * *x *x *x * *x *x * * *xx* FLOW PROCESS FROM NODE 151.00 TO NODE 151.00 IS CODE = 8 ---------------------------------------------------------------------- - - - - -- » » >ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<( ------- - - - - -- 2.00 YEAR RAINFALL INTENSITY (INCH /HOUR) = 1.120 JOW^" SOIL CLASSIFICATION IS "A %too UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .2886 SUBAREA AREA(ACRES) = 3.90 SUBAREA RUNOFF(CFS) = 1.26 TOTAL AREA(ACRES) = 8.60 TOTAL RUNOFF {CFS) = 3.22 O TC(MIN) = 26.78 9 FLOW PROCESS FROM NODE 151.00 TO NODE 155.00 IS CODE = 5 ---------------------------------------------------------------------------- > > >)> COMPUTE TRAPEZOIDAL - CHANNEL FLOW« (< ;:) >TRAVELTIME THRU SUBAREA « «< UPSTREAM NODE ELEVATION = 451.00 DOWNSTREAM NODE ELEVATION = 444.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 325.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 3.22 FLOW VELOCITY(FEET /SEC) = 1.56 FLOW DEPTH(FEET) _ .20 TRAVEL TIME(MIN.) = 3.4; TC(MIN.) = 30.26 FLOW PROCESS FROM NODE 155.00 TO NODE 155.00 IS CODE = 8 ---------------------------------------------------------------------------- >> »ADDITION O SUBAREA TO MAINLINE PEAK FLOW«C<< 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.041 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .2460 SUBAREA AREA(ACPES) = 5.00 SUBAREA RUNOFF(CFS) = 1.28 TOTAL AREA(ACRES) = 13.60 TOTAL RUNOFF(CFS) = 4.50 TC(MIN) = 30.26 A FLOW PROCESS FROM NODE 155.00 TO NODE 156.00 IS CODE = 5 ---------------------------------------------------------------------------- »)))CtMPUiE TRAPEZOIDAL- CHANNEL FLOW<.<<< ?) > >>TRAVELTIME THRU SUBAREA <<<<< UPSTREAM NODE ELEVATION = 444.00 DOWNSTREAM NODE ELEVATION = 436.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 415.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUHAREA(CFS) = 4.50 FLOW VELOCITY(FEET /SEC) = 1.64 FLOW DEPTH(FEET) _ .23 TRAVEL TIME(MIN.) = 4.22 TC(MIN.) = 34.48 ss*ss*s**sssssss:sssssssssssssss*s#s*ssss*sss :s * * # * # # #s #x #i # #s # # * * * # # # # #i ## FLOW PROCESS FROM NODE 156.00 TO NODE 156.00 IS CODE _ S ---------------------------------------------------------------------------- ) > >> ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<« - - -- - 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) _ .963 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .1967 SUBAREA AREA(ACRES) _ 7.00 SUBAREA RUNOFF(CFS) = 1.33 TOTAL AREA(ACRES) = 20.60 TOTAL RUNOFF(CFS) = 5.82 TC(MIN) = 34.48 * x# x### x# xxs xxss xxs xx###***#* xx*#*#*#*## x*#*# # # * # * * # # # # # * * # * * * *x * # # # * #s * * #x* FLOW PROCESS FROM NODE 156.00 TO NODE 160.00 IS CODE = 5 r. ::l UTE TRAPEZOIDAL- CHANNEL FLOW«(<( -- > > >>>TRAVELTIME THRU SUBAREA « «< UPSTREAM NODE ELEVATION = 436.00 DOWNSTREAM NODE ELEVATION = 428.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 320.00 CHANNEL BASE(FEET) = .00 "Z" FACTOR = 50.000 MIANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 5.32 FLOW VELOCITY(FEET /SEC) _ . 2.12 FLOW DEPTH(FEET) _ .23 TRAVEL TIME(MIN.) = 2.52 TC(MIN.) = 37.00 * x***s** xxx**** x*** x* x** xxxxx**** x* x********* *x *xx * *x *x * * * * *xxx * *xxxx * * * * * *x FLOW PROCESS FROM NODE 160.00 TO NODE 160.00 IS CODE = 8 ---------------------------------------------------------------------------- )>> >> ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) _ .923 SOIL CLASSIFICATA7N IS "A" UNDEVELOPED WATERSIED RUNOFF COEFFICIENT = .1685 SUBAREA AREA(ACRES) = 18.30 SUBAREA RI F(CFS) = 2.85 TOTAL AREA(ACRES) = 38.90 TOTAL RUNOFF(CFS) = 8.67 TC(MIN) = 37.00 FLOW PROCESS FROM NODE 160.00 TO NODE 161.00 IS CODE = 5 ---------------------------------------------------------------------------- »» . TRAPEZOIDAL - CHANNEL FLC iW< «<< > > >TRAVELTIMIE THRU SUBAREA<<<<< UPSTREAM NODE ELEVATION = 428.00 DOWNSTREAM NODE ELEVATION = 414.50 CHEL LENGTH THRU SUBAREA(FEET) = 590.00 DWKL BASE (FEET) _ .00 'Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 1.00 CHANNEL FLOW THRU SUBAREA(CFS) = 8.67 FLOW VELOCITY(FEET /SEC) = 1.97 FLOW DEPTH(FEET) = .30 TRAVEL TIME(MIN.) = 5.00 TC(MIN.) = 41.99 FLOW PROCESS FROM NODE 161.00 TO NODE 161.00 IS CODE = 8 ---------------------------------------------------------------------- - - - - -- )>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW(« (< - -- 2.06 YEAR RAINFALL INTENSITY(INCH /HOUR) _ .855 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERc,+ED RUNOFF COEFFICIENT = .1146 SUBAREA AREA(ACRES) = 4.20 SUBAREA RUNOFF(CFS) _ .41 TOTAL AREA(ACRES) = 43.10 TOTAL RUNOFF(CFS) = 9.08 TC(MIN) = 41.99' - FLOW PROCESS FROM NODE 161.00 TO NODE 10.00 IS CODE = 5 -------- ----- ----- --------- ---- ---- --------- ---- ---- ------------ - - - - -- *)> )COMPUTE TRAPEZOIDAL- CHANNEL FLOW< < <« > > > >>TRAVELTIME THRU SUBAREA<<<<< UPSTREAM NODE ELEVATION = 414.50 DOWNSTREAM NODE ELEVATION = 407.00 CHANNEL LENGTH THRU SUBAREA (FEET) = 400.00 CHiV# EL BASE (FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 C WOW FLOW THRU SUBAREA(CFS) = 9.08 FLOW VELOCITY(FEET /SEC) = 2.06 FLOW DEPTH(FEET) _ .30 TRAVEL TIME(MIN.) = 3.24 TC(MIN.) = 45.23 FLOW PROCESS FROM NODE 10.00 TO NODE 10.00 IS C13DE = 8 ---------------------------------------------------------------------------- » »)ADDITION OF SUBAREA TO MAINLINE PEAK FLOW «< << 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) _ .81E SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .0811 SUBAREA AREA(ACRES) = 2.00 SUBAREA RUtOFF(CFS) _ .13 TOTAL AREA(ACRES) = 45.10 TOTAL RUNCfF(CFS) = 9.21 TC(MIN) = 45.23 FLOW PROCESS FROM )ODE 10.00 TO NODE 15.00 IS CODE = 5 / ---------------------------------------------------------------------------- 1 »» )COMPUTE TRAPEZOIDAL- CHANNEL FLOW« <« > > » >TRAVELTIME THRU SUBAREA« «< UPSTREAM NODE ELEVATION = 407.00 DOWNSTREAM NODE ELEVATION = 402.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 280.00 CHANNEL BASE(FEET) = .00 "Z" FACTOR = 50.000 MA KINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHAtOR FLOW THRU SUBAREA(CFS) = 9.21 FLOW VELOCITY(FEET /SEC) = 2.09 FLOW DEPTH(FEET) _ .30 TRAVEL TIME(MIN.) = 2.23 TC(MIN.) = 47.46 FLOW PROCESS FROM NODE 15.00 TO NODE 15.00 IS CODE = 8 ---------------------------------------------------------------------------- »» )ADDITION OF SUBAREA TO MAINLINE PEAK FLOW(< <<< 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) _ .795 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .0586 SUBAREA AREA(ACRES) = 2.10 SUBAREA RUNOFF(CFS) _ .10 TOTAL AREA(ACRES) = 47.20 TOTAL RUNOFF(CFS) = 9.31 TC(MIN) = 47.46 FLOW PROCESS FROM NODE 15.00 TO NODE 20.00 IS CODE = 5 ---------------------------------------------------------------------------- ." "" COMPUTE TRAPEZOIDAL - CHANNEL FLOW« < > \TRAVELTIME THRU SUBAREA « <<< UPSTREAM NODE ELEVATION = 402.00 DOWNSTREAM NODE ELEVATION = 390.00 CF L LENGTH THRU SUBAREA (FEET) = 700.00 CHkXL BASE (FEET) = .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANI& FLOW THRU SUBAREA(CFS) = 9.31 FLOW VELOCITY(FEET /SEC) = 1.73 FLOW DEPTH(FEET) = .33 TRAVEL TIME(MIN.) = 6.75 TC(MIN.) = 54.21 FLOW PROCESS FROM NODE 20.00 TO NODE 20.00 IS CODE = 8 `. > »ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< « ------------------------------- 2.00 YEAR RAINFALL INTENSITY (INCH /HL = .734 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED MIFF COEFFICIENT = .0000 SUBAREA AREA(ACRES) = 4.00 SUBAREA RUNOFF(CFS) _ .00 TOTAL AREA(ACRES) = 51.20 TOTAL RUNOFF(CFS) = 9.31 TC(MIN) = 54.21 * xxs«*« xxs*** x**«*«* x****««« xs«* xx«««*** x««* xx * * « « «xsxx * * * «xs * * «x *x * * * * *x *s* FLOW PROCESS FROM NODE 20.00 TO NODE 30.00 IS CO DE = 5 » » >COMPUTE TRAPEtOIDAL- CHANNEL FLOW< «« »> »TRAVELTIME THRU SUBAREA « «< UPSTREAM NODE ELEVATION = 390.00 DOWNSTREAM NODE ELEVATI!�N = 386.00 CHANNEL LENGTH THRU SUBAREA(FEET) _ +i0.00 CHANNEL BASE (FEET) _ .00 " C" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 9.31 FLOW VELOCITY(FEET /SEC) = 1.44 FLOW DEPTH(FEET) _ .36 TRAVEL TIME (MIN.) = 4.39 TC(MIN.) = 58.60 FLOW PROCESS FROM NODE 30.00 TO NODE 30.00 IS CODE = 8 --------------- -_ ------------------------------------------------------------ » >ADDITION OF SUBAREA TO MAINLINE PEAK FLO!«« < - - -- 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = .700 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .0000 SUBAREA AREA(ACRES) = 6.30 SUBAREA RUNOFF(CFS) _ .00 TOTAL AREA(ACRES) = 57.50 TOTAL RUNOFF(CFS) _ 9.31 TC(MIN) = 58.60 x«** xxs** xx** x**** x« x« x*« x«**« x*** x** x*** xx«* x * * *x * *x *xx * « * * * « * * «x « « *xx «sx «s A* ✓ FLOW PROCESS FROM NODE 30.00 TO NODE 30.00 IS CODE = -- -------------------------------------------------------------------------- >)\X OF SUBAREA TO MAINLINE PEAK FLOW« «< ---------------------------------------------------------------------- ------ ---------------------------------------------------------------------- 2.00 YEAR RAINFALL !NTENSITY(INCH /HOUR) _ .700 .3 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF EFFICIENT = .0000 SUBAREA AREA(ACRES) = 14.90 SUBAREA RUNOFF(CFS) _ .00 TOTAL AREA(ACRES) = 72.40 TOTAL RUNOFF(CFS) = 9.31 TC(MIN) _ 58.60 FLOW PROCESS FROM NODE 30.00 TO NODE 175.00 IS CODE = 5 ---------------------------------------------------------------------------- »» %COMPUTE TRAPEZOIDAL - CHANNEL. FLOW( < «< `.> > > >TRAVELTIME THRU SUBAREA ((<<( UPSTREAM NODE ELEVATION = 386.00 DOWNSTREAM NODE ELEVATION = 382.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 61`.00 CHANNEL BASE(FEET) _ .00 °Z° FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 9.31 FLOW VELOCITY(FEET /SEC) = 1.22 FLOW DEPTH(FEET) _ .39 TRAVEL TIME(MIN.) = 8.40 TC(MIN.) = 67.00 *** x**** x* x* x** x* xx* xx** x* xx********* x*** xx** * * *x * * * *x * * * * * *x * * * *x * *x * *x * *x* FLOW PROCESS FROM NODE 175.00 TO NODE 17:.00 IS CODE = 8 ---------------------------------------------------------------------------- > >» )ADDITION OF SUBAREA TO MAINLINE PEAK FLOW (<<(< 2.00 YEAR RAINFALL INTENSITY(INCH /HOUR) _ .646 ( SOIL CLASSIFICATION IS °A' SINGLE- FAMILY(1-ACRE LOT) RUNOFF COEFFICIENT = .1700 SUBAREA AREA(ACRES) = 4.20 SUBAREA RUNOFF(CFS) _ .46 TOTAL AREA(ACRES) = 76.60 TOTAL RUNOFF(CFS) = 9.77 TC(MIN) = 67.00 FLOW PROCESS FROM NODE 175.00 TO NODE 175.00 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) = 67.00 RAINFALL INTENSITY (INCH. /HOUR) .65 TOTAL STREAM AREA (ACRES) = 76.60 TOTAL. STREAM RUNOFF(CFS) AT CONFLUENCE = 9.77 CONFLUENCE INFORMATION: STREAM RUNOFF TIME INTENSITY NUMBER (CFS) (MIN.) (INCH /HOUR) ---------------------------------------------------------------------------- 1 96.36 38.56 .900 2 9.77 67.00 .646 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO FORMULA(SBC) USED FOR 2 STREAMS. VARIOUS CONFLUENCED RU40FF VALUES ARE AS FOLLOWS: 1E C O 7NC CONFUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: RUNOFF(CFS) = 101.98 TIME(MINUTES) = 38.560 TOTAL AREA(ACRES) = 218:75 00 , 1 ,, END OF RATIONAL I-TWD ANALYSIS k m pul RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM BASED ON SAN BERNARDINO COUNTY (SBC) 1333 HYDROLOGY MANUAL. (C) Copyright 1933,1935 Advanced Engineering Software IAES1 Especially prepared for: MADOLE AND ASSOCIATES 4{{\\:{{{{ ti`.{{ iiC{ t. 4{ r/ �)is }i..�):. / } >:.. -. * * * * * * * ** *DESCRIPTION C RESULTSxxxx*** xxxxxxxxxxxxxxx * *xxx *xxx *x *xx * * * *x *xx * TR 12314 EXISTING CITE & OFFSi +'E 95 * FONTANA x * JN 142 -609 1/1;/90 [FILE EX12314.0051 xx**** xx* xxx** xxxx***** x*** x* x** xxx** xxx* xxsss * *xxxxx * * * * *xxxxx * *x * * *x *x*x ** LEER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: USER SPECIFIED STORM EVENT(YEAR) = 5.00 SPECIFIED MINIMUM PIPE SIZE(INCH) = 13.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRICTION SLOPE _ .95 10-YEAR STORM 60- MINUTE INTENSITY(INCH /HOUR) = 1.040 100-YEAR STORM 50- MINUTE - INTENSITY (INCH/HOUR) = 1:540 COMPUTED RAINFALL INTENSITY DATA: STORM EVENT = 5.00 1 -HOUR INTENSITY(INCH /HOLP) _ .9121 SLOPE OF INTENSITY DURATION CURVE _ .6000 SBC HYDROLOGY MANUAL "C "-VALUES USED <<«{<{<{<{««<<<<<{«{<<<<«{{ <{ < » » » » » > >,`' »» » » » » » >y»» > > >» Advanced Engineering Software [AES) SERIAL No. I0665I VER. 13C RELEASE DATE: 2/20/35 m xxxx* xxx** xx* x* xx** x*** x*** x*** xx** xx**** x*** *x * * *xx * * *x * * *x * *xxxxx * *xxx * *x* FLOW PROCESS FROM NODE 4.00 TO NODE 100.00 IS CODE = 2 ---------------------------------------------------------------------------- > » } >RATIONAL METHOD I NITIAL SUBAREA ANALYSIS{ « <{ ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS SINGLE FAMILY (114 ACRE) TC = K *I(LENGTH **3) /(ELEVATION CHANGE)I * *.2 INITIAL SUBAREA FLOW- LENGTH = 500.00 �O UPSTREAM ELEVATION = 515.00 DOWNSTREAM ELEVATION = 501.4! ELEVATION DIFFERENCE = 13.'A TC = .393 *1( 600.00 * *3) /( 13 X011 # *.2 = 10.334 5.00 YEAR RAINFWl INTENSITY(INICH /HOUR) = 2.547 SOIL CLASSIFICATION IS "A' SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .7265 SUBAREA RUNOFF(CFS) = 7.22 TOTAL. AREA(ACRES) = 3.90 TOTAL RU F(CFS) = 7.22 FLOW PROCESS FROM NODE 100.00 TO NODE 105.00 IS CODE = 6 ---------------------------------------------------------------------- - - - - -- *>.'.,; COMPUTE STREETFLOW TRAV'ELTIME THRU SUBAREA< %X UPSTREAM ELEVATION = 501.50 DOWNSTREAM ELEVATION = 453.50 STREET LENGTH(FEET) = 510.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 10.96 STREET FLOWDEPTH(FEET) _ .36 HALFSTREET FLOODWIDTH(FEET) = 11.55 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.77 PRODUCT OF DEPTH&VELOCITY = 1.35 STREETFLOW TRAVELTIME(MIN) = 2.25 TC(MIN) = 13.09 5.00 YEAR RAINFALL INTENSIiY(INICH/HOUR) = 2.274 SOIL CLASSIFICATION IS °A° SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .7117 SUBAREA AREA(ACRES) = 4.60 SUBAREA RUNOFF(CFS) = 7.44 SU4IED AREA(ACRES) = 3.50 TOTAL RUNOFF(CFS) = 14.66 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .39 HALFSTREET FLOODWIDTH(FEET) = 13.10 FLOW VELOCITY(FEEi /SEC.) _ .4.00 DEPTH *VELOCITY = 1.55 FLOW PROCESS FROM NODE 105.00 TO NODE 106.00 IS CODE = 6 ---------------------------------------------------------------------------- >X' ; )COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA( <((( UPSTREAM ELEVATION = 488.50 DOWNSTREAM ELEVATIONV = 476.50 STREET LENGTH(FEET) = 505.00 CURB HEIGTH(INCHES) 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) = .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 17.96 STREET FLPTH(FEET) _ .41 HALFSTREET FLOODWIDTH(FEET) = 14.13 AVERAGE FLOW VELOCITY(FEET /SEC.) = 4.25 PRODUCT OF DEPTH&VELOCITY = 1.74 STREETFLOW TRAVELTIME(MIN) = 1.98 TC(MIN) = 15.07 5.00 YEAR RAINFALL INTENaSITY(INCH /HOUR) = 2.090 SOIL CLASSIFICATION( IS "A" SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6995 SUBAREA AREA(ACRES) = 4.50 SUBAREA RUNOFF(CFS) = 6.58 SUMMED AREA(ACRES) = 13.00 TOTAL RUNOFF(CFS) = 21.24 END OF SUBAREA STREETFLOW HYDRAULICS: Q DEPTH(FEET) _ .43 HALFSTREET FLO13DWIDTH(FEET) = 15.16 7 FLOW VELOCITY(FEET /SEC.) = 4.39 DEPTH *VELOCITY = 1.39 c l FLOW PROCESS FROM NODE 106.00 TO NODE 110.00 IS CODE = 6 ---------------------------------------------------------------------- - - - - -- > > > >>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA( < { {( UPSTREAM ELEVATION = 476.50 DOWNSTREAM ELEVATION = 468.00 STREET LENGTH(FEET) = 465.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CRCMFALL(DECIMAL) _ .020T1 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 27.95 STREET FLOWDEPTH(FEET) _ .46 HALFSTREET FLOODWIDTH(FEET) = 16.71 AVERAGE FLOW 'vEiOCITY(FEET /SEC.) = 4.12 PRODUCT OF DEPTH&VELOCITY = 1.90 SIREETFLOW TRAVELTIME(MIN) = 1.88 TC(MIN) = 16.95 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.947 SOIL CLASSIFICATION IS "A" :TINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6885 SUBAREA AREA(ACRES) = 4.10 SUBAREA RUNOFF(CFS) = 5.50 SUMMED AREA(ACRES) = 17.10 TOTAL RLIKiFF(CFS) = 26.74 END OF SUBAREA STREETFLOW HYDRAULICS: DEFTHiFEE'1 = .47 HALFSTREET FLOODWIDTH(FEET) = 17.23 FLOW VELOCiTY(FEETf EC.) = 4.7.3 DEPTH *VELOCIT`i = 2.04 FLOW PROCESS FROM NODE 110.00 TO NODE 115.00 IS CODE = 6 ---------------------------------------------------------------------------- L:MijJ 1 r.EtTr�_�W AV HR THRU' S: BARE < :'. •; { LLCYAT = 468.00 DOWNSTREAM ELEVATION = 46 STREET LENGTH (FEET) = 365. %0 CURB HEIGTH(INCHES) = 6. STREET .IALFWIDrd(FEET) = 18.00 STREET CROSSFALL(DECIMALI = .0:(10 SPECIFIED N!_IT ER OF HALFS T REE T S CARRY!,% RUNOFF = 2 *TRAVELTI'E COMPUTED USING MEAN FLOW(CFS) _ =+1.19 ** *STREET FLOWING F���LL * ** r N S P1OTE: STR �- ' LOW E.;CEED TOP OF CURB. a i THE FOLLOWING STREETFLOW RESULTS ARE BASED ON T HE NSSU.hj T if'N THAT NEGLIBLE FLOW OCCURS OUTSIDE OF THE STREET CHANNEL. THAT IS, ALL FLOW ALONG THE PARKWAY, ETC., IS NEGLECTED. STREET FLOWDEPTH(FEET) _ .54 HALFSTREET FLOODWIDTH(FEET) = 18.00 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.68 PRODUCT OF DEPTH &VELOCITY = 1.97 STREETFLOW TRAVELTIME(MIN) = 1.65 TC(MIN) = 18.60 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.841 SOIL CLASSIFICATION IS "A" SINGLE - FAMILY Q /4 ACRE LOT) RUNOFF COEFFICIENT = .6792 SUBAREA AREA(ACRES) = 7.10 SUBAREA RUNOFF(CFS) = 8.888 SUMMED AP,EA(ACRES) = 24.20 TOTAL RUNOFF(CFS) = 35.52 : END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .55 HALFSTREET FLOODWIDTH(FEET) = 18.00 FLOW VELOCITY( Fl- ETISEC.) _ "3.'35 DEPTH *VELOCITY = 2.15 FLOW PROCESS FROM NODE 115.00 TO NODE 120.00 IS CODE = 6 f//. STREETFLOW TRAVELTIME THRU SUBAREAM UPSTREAM ELEVATION = 464.50 DOWNSTREAM ELEVATION = 462'.50 STREET LENGTH(FFIT) = 410.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 15.00 STREET CROSSFALL(DECIMAL) = .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUWF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 43.69 ** *STREET FLOWING FULL* ** 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) _ .65 HALFSTREET FLOODWIDTH(FEET) = 18.00 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.44 PRODUCT OF DEPTH&VELOCITY = 2.25 STREETFLOW TRAVELTIME(MIN) = 1.98 TC(MIN) = 20.59 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.733 .OIL CLASSIFICATION IS "A" SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6685 :SUBAREA AREA(ACRES) = 13.90 'SUBAREA RUNGfF(CFS) "LIMMED AREA(ACRES) = 38.10 TOTAL RUNOFF(CFS) = 51.72 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .69 HALFSTREET FLOODWIDTH(FEET) = 18.00 FLOW VELOCITY(FEET /SEC.) = 3.61 DEPTH *VELOCITY = 2.54 FLOW PROCESS FROM NODE 120.00 TO NODE 125.00 IS CODE = 6 ---------------------------------------------------------------------------- .,% )COMPUTE STREETFLOW TRAVELTIME THRL' SUBAREA {Fit( -- UPSTREAM ELEVATION = 462.50 DOWNSTREAM ELEVATION = 460.00 STREET LENGTH(FEET) = 530.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 61.32 ** *STREET FLOWING FULL* ** 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) = .73 HALFSTREET FLOODWIDTH(FEET) = 18.00 AVERAGE FLOW VELOCITY(FEET /SEC'.) = 3.96 PRODUCT OF DEPTH&VELOCITY = 2.39 STREETFLOW TRAVELTIME(MIN) = 2.23 TC(MIN) = 22.82 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.629 SOIL CLASSIFICATION IS "A" ,�. SIhG'aLE-FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6569 SUBAREA AREA(ACRES) = 17.90 SUBAREA RUNOFF(CFS) = 19.16 SUMMED AREA(ACRES) = 56.00 TOTAL RUNOFF(CFS) = 70.87 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .77 HALFSTREET FLOODWIDTH(FEET) = 18.00 FLOW VELOCITY(FEET /SEC.) = 4.19 DEPTH *VELOCITY = 3. 0 .., FLOW PROCESS FROM NODE 125.00 TO NODE 130.00 IS CODE = 6 %WW, ---------------------------------------------------------------------------- »COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<<<< UPSTREAM ELEVATION = 460.00 DOWNSTREAM ELEVATION = 456.50 STREET LENGTH(FEET) = 405.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) 74.61 ** *STREET FLOWING FULL * ** NOTE: STREETFLOW EXCEEDS TOP OF CURB. THE FOLLOWING STREETFLOW RESULTS ARE BASED C34 THE ASSUMPTION THAT NEGLIBLE FLOW OCCURS OUTSIDE OF THE STREET CHANNEL. THAT IS, ALL FLOW ALONG THE PARKWAY, ETC., IS NEGLECTED. STREET FLOWDEPTH(FEET) _ .69 HALFSTREET FLOODWIDTH(FEET) = 15.00 AVERAGE FLOW VELOCITY(FEET /SEC. ) = 5.29 PRODUCT OF DEPTH&VELOCITY = 3.66 STREETFLOW TRALEELTIME (MIN) = 1.28 TC(MIN) _ '4.10 5.00 YEAR RAINFFALL INTENSITY(INCHIHOLF0 = 1.577 SOIL CLASSIFICATION IS "A" SINGLE- FAMILY(114 ACRE LOT) RUNOFF COEFFICIENT = .6`05 SUBAREA AP.EA(ACRES) = 7.30 SUBAREA RUNOFF(CFS) = 7.49 SUMMED AREA(ACRES) = 63.30 TOTAL RUNOFF(CFS) = 78.36 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .71 HALFSTREET FLOODWIDTH(FF.ET) = 18.00 FLOW VELOCITY(FEET /SEC.) = 5.29 DEPTH *VELOCITY = 3.76 # tt# x#### xxx# txxt#*# xxx*## xxxxx# x## xtxx xxxttttxxxtt #tx #xxtt # *x # * # # # #xtx #t # ## FLOW PROCESS FROM NODE 130.00 TO NODE 130.00 IS CODE = I ---------------------------------------------------------------------------- >> };:DESIGNATE INDEPENDENT STREAM FOR COIfLUEN CE <<<<< CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MINUTES) = 24.10 RAINFALL INTENSITY (INCH. /HOUR) = 1.58 TOTAL STREAM AREA (ACRES) = 63.30 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 78.36 ## t# t##* t###* x*### xt## xxxx*## xxttxxxt*# t# tt## x # # #txtx # * #tt #xxtt * * # * #t # * #t *t* FLOW PROCESS FROM NODE 5.00 TO NODE 121.00 IS CODE = 2 ---------------------------------------------------------------------------- .e »> ?RATIONAL METHOD INITIAL SUBAREA ANAL'rSIS« «< ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS SINGLE FAMILY (1/4 ACRE) TC = K *((LENGTH * *3)/(ELEVATION CHANGE)) * *.2 INITIAL SUBAREA FLOW- LENGTH = 600.00 UPSTREAM ELEVATION = 509.00 DOWNSTREAM ELEVATION = 497.00 ELEVATION DIFFERENCE = 12.00 TC = .393 *(( 600.00 * *3) /( 12.00)) * *.2 = 11.092 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 2.511 SOIL CLASSIFICATION IS "A" SINGLE-FAMILY(1i4 ACRE LOT) RUNOFF COEFFICIENT = .7248 Es SUBAREA RUNOFF(CFS) = 7.46 TOTAL AREA(ACRES) = 4.10 TOTAL RUNOFF(CFS) = 7.46 FLOW PROCESS FROM NODE 121.00 TO NODE 126.00 IS CODE = 6 ---------------------------------------------------------------------------- i;:i:GOMPUTE STREETFLOW TRAVELTIME THRU SUBAREA <<< << --------------- - -- UPSTREAM ELEVATION = 497.00 DOWNSTREAM ELEVATION = 494.00 STREET LENGTH(FEET) = 495.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RtINOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) STREET FLOWDEPTH(FEET) _ .43 HALFSTREET FLOODWIDTH(FEE+T) = 15.16 AVERAGE FLOW VELOCITY(FEET /SEC.) = 2.30 PRODUCT OF DEPTH&VELOCITY = .99 STREETFLOW TRAVELTIME(MIN) = 3.59 TC(MIN) = 14.63 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 2.123 SOIL CLASSIFICATION IS "A" SINGLE-FAMILY(1 14 ACRE LOT) RUNOFF COEFFICIENT = .7018 SUBAREA AREA(ACRES) = 4.90 SUBAREA RU)N?FF(C:FS) = 7.30 SUMMED AREA(ACRES) = 9.00 TOTAL RUNOFF(CFS) = 14.76 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .47 HALFSTREET FLOODWIDTH(FEET) = 17.23 FLOW VELOCITY (FEET/SEC. ) = 2.39 DEPTH *VELOCITY = 1.13 * x#* xxx#* xx#***#** x#* x**##**##* x* x* xx###*# x** xx * * * *x * # * * #x * * * * * *x * # * * # * * # * *# FLOW PROCESS FROM NODE 126.00 TO NODE 127.00 IS CODE = 6 ---------------------------------------------------------------------------- >X COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA« « < - - ---- - - - - -- -- UPSTREAM ELEVATION = 494.00 DOWNSTREAM ELEVATION = 413.00 STREET LENGTH(FEET) = 640.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 20.78 STREET FLOWDEPTH(FEET) _ .48 HALFSTREET FLOODWIDTH(FEET) = 17.74 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.18 PRODUCT OF DEPTH &VELOCITY = 1.53 STREETFLOW TRAVELTIME(MIN) = 3.35 TC(MIN) = 18.03 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.876 SOIL CLASSIFICATION IS "A" SINGLE-FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6824 SUBAREA AREA(ACRES) = 9.40 SUBAREA RUNOFF(CFS) = 12.03 SUMMED AREA(ACRES) = 18.40 TOTAL RUNOFF(CFS) = 26.80 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) = .52 HALFSTREET FLOODWIDTH(FEET) = 18.00 FLOW VELOCITY(FEET/SEC.) = 3.45 DEPTH *VELOCITY = 1.73 * xx** xx#**##*** x###*# x** x** x** xx**#** xx**#** x * * *xx * * # * *x # * *x # # * # * * * # #x * # # # x* FLOW PROCESS FROM NODE 127.00 TO NODE 12 IS CODE = 6 ---------------------------------------------------------------------- - - - - -- / "COMPUTE STREETFLOW TRAVELTIPE THRU SUBAREA« << .,,:, UPSTREAM ELEVATION = 488.00 DOWNSTREAM ELEVATION = 47 STREET LENGTH(FEET) = 495.00 CURB HEIGTH(INCHES) = 6. r . STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) = .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 30.08 STREET FLOWDEPTH(FEET) _ .48 HALFSTREET FLOODWIDTH(FEET) = 17.74 AVERAGE FLOW VELOCITY(FEET /SEC.) = 4.61 PRODUCT OF DEPTH &VELOCITY = 2.22 STREETFLOW TRAVELTIME(MIN) = 1.79 TC(MIN) = 19.82 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.773 SOIL CLASSIFICATION IS "A° SINGLE-FAMILY(1/4 ACRE LOT) RIFF COEFFICIENT = .6726 SUBAREA AREA(ACRES) = 5.50 SUBAREA RUNOFF(CFS) = 6.56 SUMMED AREA(ACRES) = 23.90 TOTAL RUNOFF(CFS) = 33. 125 END OF S3J$AREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .48 HALFSTREET FLOODWIDTH(FEET) = 17.74 FLOW VELOCITY(FEET /SEC.) = 5.11 DEPTH *VELOCITY = 2.46 xxxx* xxx xx* xxxxxxxxx** xxxxxxxxxxx* xxx* xxxxxxxxx *xxxxx *xxxxxx *xxxx *x * *xxx *xx* FLOW PROCESS FROM NODE 128.00 TO NODE 129.00 IS CODE = 6 ---------------------------------------------------------------------- - - - - -- ` .M COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA:;tCC UPSTREAM ELEVATION = 477.00 DOWNSTREAM ELEVATION = 467.00 STREET LENGTH(FEET) = 505.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) = .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 36.44 ** *STREET FLOWING FULL * ** STREET FLOWDEPTH(FEET) _ .50 HALFSTREET FLOODWIDTH(FEET) = 18.00 AVERAGE FLOW VELOCITY(FEET /SEC.) = 5.16 PRODUCT OF DEPTH&VELOCITY = 2.56 STREETFLOW TRAVELTIME(MIN) = 1.63 TC(MIN) = 21.46 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.690 SOIL CLASSIFICATION IS A SINGLE-FAMILY(1 14 ACRE LOT) RUNOFF COEFFICIENT = .6639 SUBAREA AREA(ACRES) = 5.50 SUBAREA RtRdOFF(CFS) = 6.17 SUMMED AREA(ACRES) = 29.40 TOTAL RUNOFF(CFS) = 39.53 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .52 HALFSTREET STREET FLOODWIDTH(FEET) = 18.00 FLOW VELOCITY(FEET /SEC.) = 5.09 DEPTH *VELOCITY = 2.62 xxxx: xx: xxx: x:: xx xxx xx: x: xxxxxx::: x: xxx x: xxxxxxx :xxxxxxxxxxxxxxxxxxxxx *xxxxx FLOW PROCESS FROM NODE 129.00 TO NODE 130.00 IS CODE = 6 ---------------------------------------------------------------------- - - - - -- 7 ?? > >COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA:it� UPSTREAM ELEVATION = 467.00 DOWNSTREAM ELEVATION = 456.50 STREET LENGTH(FEET) = 470.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 42.47 ** *STREET FLOWINNG FULL * ** NOTE: STREETFLOW EXCEEDS TOP OF CURB. THE FOLLOWING STREETFLOW RESULTS ARE BASED ON THE ASSUMPTION iMrr THAT NE6LIBLE FLOW OCCURS OUTSIDE OF THE STREET CHANNEL. THAT IS, ALL FLOW ALONG THE PARKWAY, ETC., IS NEGLECTED. STREET FLOWDEPTH(FEET) _ .52 HALFSTPEET FLOODWIDTH(FEET) = 18.00 AVERAGE FLOW VELOCITY(FEET /SEC.) = 5.46 PRODUCT OF DEPTH&VELOCITY = 2.82 STREETFLOW TRAVELTIME(MIN) = 1.43 TC(MIN) = 22.89 5.00 YEAR RAINFALL INTEN).SITY(INCH;HOUR) = 1.626 SOIL CLASSIFICATION IS °A" SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6566 SUBAREA AREA(ACRES) = 5.50 SUBAREA RUNOFF(CFS) = 5.87 3UM! ED AREA(ACRES) = 34.90 TOTAL RUNOFF(CFS) = 45.40 END OlF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .52 HALFSTREEI FLOODWIDTH(FEET) = 18.00 FLOW VELOCITY(FEET:SEC.) = 5.34 DEPTH *VELOCITY = 3.01 ****** t** ttttt* t*** tt** ttt**** t***** tt*** tt* t * * * * * * * * * * * * * * * * * * * * * * * * ** * * * ** FLOW PROCESS FROM NODE 130.00 TO NODE 130.00 IS CODE = 1 ---------------------------------------------------------------------- - - - - -- ;; 1 ''>DESIC�NIATE INDEPENDENT STREAM FOR CONFLUENCE( <((< , } % >AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES(« (( CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MINUTES) = 22.89 C RAINFALL INTENSITY (INCH. /HOUR) = 1.63 TOTAL STREAM AREA (ACRES) = 34.90 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 45.40 CONFLUENCE INFORMA'+ION: STREAM RUNOFF TIMME INTENSITY NUMBER (CFS) (MIN.) (INCH /HOUR) ---------------------------------------------------------------------- - - - - -- 1 78.36 24.10 1.577 2 45.40 22.89 1.626 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO FORMULA(SBC) USED FOR 2 STREAMS. VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS: 122.38 _119.83 COMPUTED CaIFLUENCE ESTIMATES ARE AS FOLLOWS: RUNOFF(CFS) = 122.38 TIME(MINUTES) = 24.098 TOTAL AREA(ACRES) = 93.20 FLOW PROCESS FROM NODE 130.00 TO NODE 135.00 IS CODE = 6 ---------------------------------------------------------------------------- >:.•CWJTE STREETFLOW TRAVELTIME THRU SUBAREA(((« ------------------------ UFSTREAM ELEVATION 456.50 D0WNSTREAM ELEVATION = 440.00 STREET LENGTH(FEET) = 700.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CfS) = 126.61 Q ** *STREET FLOWING FULL * ** 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) = 13.00 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.55 PRODUCT OF DEPTH&VELOCITY = 6.03 STREETFLOW TRAVEELTIME(MIN) = 1.36 TC(MIN) = 25.46 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.525 SOIL CLASSIFICATION IS "A" SINGLE-FAMILY(1 /4 ACRE LOT) RUFF COEFFICIENT = .6433 SUBAREA AREA(ACRES) = 9.60 SUBAREA RLWF(CFS) = 3.45 SUMMED AREA(ACRES) = 106.20 TOTAL RUNOFF(CFS) = 130.93 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) = .71 HALFSTREET FLOODWIDTH(FEET) = 19.00 FLOW _,LTY(FEET SEC.) = 3.34 DEPTH *VELOCITY = 6.25 - TD 1. 1 3 fob Nod -_ IONW-51ow- FLOW PROCESS FROM NODE 135.00 TO NODE 136.00 IS CODE = 5 ---------------------------------------------------------------------- - - - - -- >> » )COMPUTE TRAPEZOIDAL - CHANNEL FLOW< «< > > > »TRAVELTIME THRU SUBAREA < < < << UPSTREAM NODE ELEVATION = 440.00 D TREAN 14OD ELEVATION = 427.50 CHANNEL LENGTH THRU SUBAREA(FEET) = 495.00 r CHANNEL BASE(FEET) = .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIML94 DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 130.33 FLOW VELOCITY(FEET,"SEC) = 4.12 FLOW DEPTH(FEET) _ .90 TRAVEL TIME(MIN.) = 2.00 TC(MIN.) = 27.46 FLOW PROCESS FROM NODE 136.00 TO NODE 136.00 IS CODE = 9 ---------------------------------------------------------------------------- »> ?;ADDITION OF SUBAREA TO MAINLINE PEAK FLOW< << 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.453 SOIL CLASSIFICATION IS "A" UNDE4r1OF9 WATER%,fD RUNOFF COEFFICIENT = .4135 SUBAREA AREA(ACRES) = 2.10 SUBAREA RUNOFF(CFS) = 1.23 TOTAL AREA(ACRES) = 109.90 TOTAL RUNOFF(CFS) = 132.11 TC(MIN) = 27.46 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 136.00 TO NODE 140.00 IS CODE = 5 ---------------------------------------------------------------------------- > »d>COMPUTE TRAPEZOIDAL- CHANNEL FLOW ««< > >> »TRAVEL T IME THRU SUBAREA <C «< ------------------------------------------------------------------ UPSTREAM NODE ELEVATION = 427.50 DOWNSTREAM NODE ELEVATION = 410.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 515.00 CHANNEL BASE(FEET) = .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 132.11 FLOW VELOCITY(FEET /SEC) = 4.90 FLOW DEPTH(FEET) .73 TRAVEL TIME(MIN.) = 1.75 TC(MIN.) = 29.22 FLOW PROCESS FROM NODE 140.00 TO NODE 140.00 IS CODE = 8 ) ») )ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<(« 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.405 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .4022 SUBAREA AREA(ACRES) = 4.70 SUBAREA RU)O]FF(CFS) = 2.66 TOTAL AREA(ACRES) = 113.60 TOTAL RL-'NOFF(CfS) = 134.76 TC(MIN) = 29.22 FLOW PROCESS FROM NODE 140.00 TO NODE 145.00 IS CODE = 5 ---------------------------------------------------------------------- - - - - -- > >>:zKONPUTE TRAPEZOIDAL- CHANNEL FLOW « <« > > > > >TRAVELTIME THRU SUBAREA<< « < UPSTREAM NODE ELEVATION = 417.50 DOWNSTREAM NODE ELEVATION = 410.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 215.00 CHA ML BASE(FEET) _ .00 "Z" FACTO = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 C CHANNEL FLOW THRU SUBAREA(CFS) = 134.76 FLOW VELOCITY(FEET /SEC) = 5.00 FLOW DEPTH(FEET) _ .73 TRAVEL TIME(MIN.) _ .72 TC(MIN.) = 29.93 FLOW PROCESS FROM NODE 145.00 TO NODE 145.00 IS CODE = 8 ---------------------------------------------------------------------------- » > >> ADDITION OF SUBAREA TO MAINLINE PEAK FLOW(' 5.00 YEAR RAINFALL INTENSITY(INCH /HO)R) = 1.384 SOIL CLASSIFICATION IS " A " UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .3956 SUBAREA AREA(ACRES) = 5.10 SUBAREA RUNOFF(CFS) = 2.79 TOTAL AREA(ACRES) = 118.70 TOTAL RUNOFF(CFS) = 137.56 TC(MIN) = 29.93 ############# kt#*## t# t#*## t*####### x## ttt### kttt # # #ttt # #k # # # # # #tt # # #t # # # #t ## FLOW PROCESS FROM NODE 145.00 TO NODE 146.00 IS CODE = 5 ---------------------------------------------------------------------- - - - - -- >>>>>COMP'UTE TRAPEZOIDAL - CHANNEL FLOW« <<< >>> >>TRAVELTIME THRU SUBAREA <<(« UPSTREAM NODE ELEVATION = 410.00 DOWNSTREAM NODE ELEVATION = 401.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 415.00 CHANNEL BASE(FEET) _ .00 "Z" FACTO = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 137.% FLOW VELOCITY(FEET/SEC) = 4.01 FLOW DEPTH(FEET) _ .83 TRAVEL TIME(MIN.) = 1.72 TC(MIN.) = 31.66 FLOW PROCESS FROM NODE 146.00 TO NODE 146.00 IS CODE = 8 ---------------------------------------------------------------------- - - - - -- >)> > >ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« <<< 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.339 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .3301 SUBAREA AREA(ACRES) = 3.30 SUBAREA RUNOFF(CFS) = 1.68 TOTAL AREA(ACRES) = 122.00 TOTAL RUNOFF(CFS) = 139.24 TC(MIN) = 31.66 FLOW PROCESS FROM NODE 146.00 TO NODE 145.00 IS CODE = 1 ---------------------------------------------------------------------------- > > >>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE CONFLUENCE VALUES USED FOR INDEPENDENT STREAM I ARE: TIME OF CONCENTRATION(MINUTES) = 31.66 RAINFALL INTENSITY (INCH. /HOUR) = 1.34 TOTAL STREAM AREA (ACRES) = 122.00 TOTAL STREAM RUNGFF(CFS) AT CONFLUENCE = 139.24 #*$$ xxx$$$$$ x$ xx*$*$ xx$$$$ xx**$ xxx$$ xx$$ xxxx$ *xxxxxx *x #xxx$x # #x * *xxx # * # * # #x$ FLOW PROCESS FROM NODE 6.00 TO NODE 148.00 IS CODE = 2 ---------------------------------------------------------------------------- ;):>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS << <<< ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS: CiUVELOPED WITH FAIR COVER TC = K *t(LENGTH * *3) /(ELEVATAO) CHANGE)) * *.2 INITIAL SUBAREA FLOW - LENGTH = 550.00 UPSTREAM ELEVATION = 448.00 DOWNSTREAM ELEVATION = 435.00 ELEVATION DIFFERENCE = 13.00 TC = .709 *(( 550.00 * *3) /( 13.00)) * *.2 = 18.721 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.835 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .5071 SUBAREA RUNOFF(CFS) = 1.86 TOTAL AREA(ACRES) = 2.00 TOTAL RUNOFF(CFS) = 1.86 FLOW PROCESS FROM NODE 148.00 TO NODE 147.00 IS CODE = 5 ---------------------------------------------------------------------- - - - - -- ?! >> )COMPUTE TRAPEZOIDAL - CHANNEL FLOW« <( ? » ? >TRAVELTIME THRU SUBAP.EA « «< UPSTREAM NODE ELEVATION = 435.00 DOWNSTREAM NODE ELEVATION = 416.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 935.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) CHANNEL FLOW THRU SUBAREA(CFS) = 1.86 (O FLOW VELOCITY(FEET /SEC) = 1.26 FLOW DEPTH (FEET) _ .17 TRAVEL TIME (MIN.) = 13.03 TC(MIN.) = 31.75 �` x*** x*** xxxxxxxx* xxxx***** xxx** xxxx** x* x* x* xxx * *xx *xxxxxxx *x *xx * *xx * *x **xx*x err+ FLOW PROCESS FROM NODE 147.00 TO NODE 147.00 IS CODE = 3 ---------------------------------------------------------------------------- )).`))ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« <« 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.336 SOIL CLASSIFICATION IS "A' UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .3752 SUBAREA AREA(ACRES) = 3.50 SUBAREA RUNOFF(CFS) = 1.77 TOTAL AREA(ACRES) = 5.50 ;TOTAL!NC�FF(CFS) = 3.63 TC(MIN) = 31.75 x* xxx*** x** x** xxxxxxxxxx* xx* xx* xx*** x** xxx* x* * *xxx * * *x *xxxx * xx *xxx *� *xxx * * ** FLOW PROCESS FROM NODE 147.00 TO NODE 146.00 IS CODE = 5 ---------------------------------------------------------------------- - - - - -- )))))COMPUTE TRAPEZOIDAL-CHANNEL FLOW(« « )))))TRAVELTIME THRU SUBAREA((( <( UPSTREAM NODE ELEVATION = 416.00 DOWNSTREAM NODE ELEVATION = 401.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 670.00 CHANNEL BASE(FEET) = .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 3.63 ` FLOW VELOCITY(FEET /SEC) = 1.76 FLOW DEPTH(FEET) t TRAVEL TIME(MIN.) = 6.34 TC(MIN.) = 33.09 xx*** x* xx* x* x* xx**** xx* x**** x* x* x* x* x* x** x* x* x * * * *xxx *x *xxxxx * *x * * *xx * * *xx ** FLOW PROCESS FROM NODE 146.00 TO NODE 146.00 IS CONE = ---------------------------------------------------------------------------- )))))ADDITION OF SUBAREA TO MAINLINE PEAK FLOW < «« 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.198 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUkOFF COEFFICIENT = .3249 SUBAREA AREA(ACRES) = 2.00 SUBAREA RUNOFF(CFS) _ .78 TOTAL AREA(ACRES) = 7.50 TOTAL RUNOFF(CFS) = 4.41 TC (MIN) = 38.09 x* xxxxxxxxxxxxxxxx*x xxxxxxx*** x* xxxx* xxx**** xxxxxx *x * * *x * * * * * * * * *xxx * * *x *x *x FLOW PROCESS FROM NODE 146.00 TO NODE 146.00 IS CODE = i ---------------------------------------------------------------------- - - - - -- >)))DESIGNATE INDEPENDENT STREA14 FOR CON FLUENCE««< )))))AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES <( <(< -- CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MINUTES) _ 38.09 RAINFALL INTENSITY (INCH. /HOUR) = 1.20 TOTAL STREAM AREA (ACRES) TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 4.41 CONFLUENCE INFORMATION: STREAM RUNOFF TINE INTENSITY 7 NUMBER (CFS) (MIN.) (INCH /HOUR) 1 139.4 31.66 1.339 2 4.41 38.09 1.198 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO FORMULA(SBC) USED FOR 2 STREAMS. VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS: 142.90 129.02 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: RUNOFF(CFS) = 14190 TIME(MINUTES) = 31.657 TOTAL AREA(ACRES) = 129.50 * x* xxx* x***** xxxx*** xx**** x* xx** xxxxxx** x* xxxx *xxx : *x *xx * *xx *x *xx *xx * *xx *xxx FLOW PROLES:. FROM t 146.00 TO NODE 170.00 iS CODE = 5 ---------------------------------------------------------------------------- COMPUTE TRAPEZOIDAL- CHANNEL FLOW < <e(0' ` ;TRAVELTIME THR1J SUBAREA ( UPSTREAM NODE ELEVATION = 401.00 DOWNSTREAM NODE ELEVATION = 394.00 CHANNEL LENGTH THRU SUBAREA(FEET} = 425.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET} = 2.00 CHANNEL FLOW THRU :lJBAREA(CFl@ = 141.90 FLOW VE.00.ITY(FEET /SEC} = 3.60 FLOW DEPTH(FEET) _ .89 TRAVEL TIME (MIN.) = 1.97 TC(MIN.) = 33.62 C x xxxxx** xx* xx** xxxxxx* xx* xxxxx* xxxxx* xxx* xxx* * * *xxxxx *x *xx * * * *xxxx *x *xx *x *xx FLOW PROCESS FROM NODE 170.00 TO NODE 170.00 IS CODE = 8 --------------------------------------------------------- ------------------ . , ,W , zADDITION f iF SUBAREA TO MAINLINE PEAK FLOW « <« 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.291 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .3628 SUBAREA AREA(ACRES) = 1.50 SUBAREA RUNOFF(CFS) = .70 TOTAL AREA(ACRES) = 131.00 TOTAL RUNOFF(CFS) = 143.61 TC(MIN) = 33.62 FLOW PROCESS FROM NODE 170.00 TO NODE 175.00 IS CODE = 5 ) > >) ?COMPUTE TRAPEZOIDAL-CHANNEL FLOW < «« ?'>`;TRAVELTIME THRU SUBAREA < <<<< UPSTREAM NODE ELEVATION = 394.00 DOWNSTREAM NODE ELEVATION = 332.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 660.00 CHANNEL BASE(FEET) = .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .020 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 143.61 FLOW VELOCITY(FEET /SEC) = 5.33 FLOW DEPTH(FEET) TRAVEL TIME(MIN.) = 2.07 TC(MIN.) = 35.69 * x** x**** xxx** xx*** x* xx*** xxxx** xxxx* xxxxx* xxxx *x *x *xx *xx *xx *x *xx *x * *xxx *xx* FLOW PROCESS FROM NODE 175.00 TO NODE 175.00 IS CODE = 3 ----------------------------------------------------- >ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<C:<< - ---------------------------------- 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.246 SOIL CLASSIFICATION IS "A" SINGLE- FAMILY(I -ACRE LOT) RUNOFF COEFFICIENT = .4460 SUBAREA AREA(ACRES) = 11.10 SUBAREA RUNOFF(CFS) = 6.17 TOTAL AREA(ACRES) = 142.10 TOTAL RUNOFF(CFS) = 149.77 TC(MIN) _ 35.69 FLOW PROCESS FROM NODE 175.00 TO NODE 175.00 IS CODE = 1 -=-------------------------------------------------------------------------- `.` ` )DEyICiNATE INDEPENDENT STREAM FOR C LUENCE< < *"(e CONFLUENCE VALUES USED FOR INDEPENE04T STREAM 1 ARE: TIME OF CONCENTRATION(MINUTES) = 35.69 RAINFALL INTENSITY (INCH. /HOUR) = 1.25 TOTAL STREAM AREA (ACRES) = 142.10 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 149.77 FLOW PROCESS FROM NODE 7.00 TO NODE 150.00 IS CODE = 2 ---------------------------------------------------------------------- - - - - -- ii >\RATIONAL METHOD INITIAL SUBAREA ANALYSIS « «< C ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS: UNDEVELOPED WITH FAIR COVER TC = K*I(LENGTH * *3) /(ELEVATION CHANGE),'* *.2 INITIAL SUBAREA FLOW - LENGTH = 730.00 UPSTREAM ELEVATION = 468.00 DOWNSTREAM ELEVATION = 457.00 ELEVATION DIFFERENCE = 11.00 TC = .709 *I( 730.00 * * 3)1 1 ( 11.00)1 * *.2 = 22.941 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.624 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = . 4627 SUBAREA RUNOFF(CFS) = 3.53 TOTAL AREA(ACRES) = 4.70 TOTAL RUNOFF(CFS) = 3.53 FLOW PROCESS FROM NODE 150.00 TO NODE 151.00 IS CODE = 5 ---------------------------------------------------------------------- - - - - -- >? >)COMPUTE TRAPEZOIDAL- CHANNEL FLOW« :( >) > > ?TRAVELTIME THRU SUBAREA((\' « UPSTREAM NODE ELEVATION = 457.00 DOWNSTREAM NODE ELEVATION = 451.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 305.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.:100 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 3.53 FLOW VELOCITY(FEET /'SEC) = 1.71 FLOW DEPTH(FEET) _ .20 TRAVEL TIME(MIN.) = 2.97 TC(MIN.) = 25.91 x** xx******** x**** x** xx**** x******** xx*** x* x* xx * * *xxxx * ** *x * * * * *x *x *x * * * * * ** FLOW PROCESS FROM NODE 151.00 TO NODE 151.00 I5 CODE = 3 ---------------------------------------------------------------------------- - - > > >>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW< < << {______________________ _ 5.00 YEAR RAINFALL INTENSITY(INCHIHOUR) = 1.510 SOIL CLASSIFICATION IS 'A' UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .4333 SUBAREA AREA(ACRES) = 3.90 SUBAREA RUNOFF(CFS) = 2.55 TOTAL AREA(ACRES) = 3.60 TOTAL RUNOFF(CFS) = 6.03 TC(MIN) = 25.91 FLOW PROCESS FROM NODE 151.00 TO NODE 155.00 IS CODE = 5 ---------------------------------------------------------------------------- > >> ))COMPUTE TRAPEZOIDAL - CHANNEL. FLOW <<< << »» >TRAVELTIME THRU SUBAREA « «< UPSTREAM NODE ELEVATION = 451.00 DOWNSTREAM FADE ELEVATION = 444.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 325.00 CHANNEL BASE(FEET) = .00 'Z' FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 C Woa FLOW THRU SUBAREA(CFS) = 6.08 FLOW 4ELOCITY(FEET /SEC) = 1.72 FLOW DEPTH(FEET) _ .27 TRAVEL TIME(MIN.) = 3.14 TC(MIN.) = 29.05 xx** x** xxx* xxx** x* �* xx** xx** xx* xxx* x* xxxx*: xx * *xxx * *xxxxxx * * *xx *xx *xxx * * *xxx C FLOW PROCESS FROM NODE 155.00 TO NODE 155.00 IS CODE = 8 ---------------------------------------------------------------------------- » »> ADDITION OF SUBAREA TO MAINLINE PEAK FLOW' ---- - 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.409 SOIL CLASSIFICATION IS 'A' UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .4037 SUBAREA AREA(ACRES) = 5.00 SUBAREA RUNOFF(CFS) = 2.34 TOTAL AREA(ACRES) = 13.60 TOTAL RUNOFF(CFS) = 8.93 TC(MIN) = 29.05 *** x* x*** x** xx* xx* xxxx*** xxxxx** xx* xxx* xx*** xxx * * * * * * * * * * * * * * * * * *xx * * * * *x ** FLOW PROCESS FROM NODE 155.00 TO NODE 156.00 IS CODE = 5 » » >COMPUTE TRAPEZOIDAL- CHANNEL FLOW< «« > > > >>TRAVELTIME THRU SUBAREA« «< UPSTREAM NODE ELEVATION = 444.00 DOWNSTREAM NODE ELEVATION = 436.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 415.00 CHANNEL BASE (FEET) = .00 'Z' FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 8.93 FLOW VELOCITY(FEET;SEC) = 2.03 FLOW DEPTH(FEET) _ .30 TRAVEL TIME(MIN.) = 3.41 TC(MIN.) = 32.47 FLOW PROCESS FROM NODE 156.00 TO NODE 156.00 IS l`.ODE = $ ---------------------------------------------------------------------- - - - - -- ?;);ADDITION OF SUBAREA TO MAINLINE PEAK FLOW«<« 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.313 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .3729 SUBAREA AREA(ACRES) = 7.00 SUBAREA RUNDFF(CFS) = 3.44 TOTAL AREA(ACRES) = 20.60 TOTAL RUNOFF(CFS) = 12.37 TC(MIN) = 32.47 FLOW PROCESS FROM NODE 156.00 TO NODE 150.00 IS CODE = 5 ---------------------------------------------------------------------------- ) »r >COMPUTE TRAPEZOIDAL - CHANNEL FLOW«<« )) >))TRAIELTIME THRU SUBAREA« <:< UPSTREAM NODE ELEVATION = 436.00 DOWNSTREAM NODE ELEVATION = 428.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 320.00 CHANNEL BASE(FEET) _ .00 "c" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 12.37 FLOW VELOCITY(FEET /SEC) = 2.30 FLOW DEPTH(FEET) _ .33 TRAVEL TIME(MIN.) = 2.32 TC(MIN.) = 34.73 FLOW PROCESS FROM NODE 160.00 TO 14ODE 160.00 IS CODE = 8 ----------------------------- ----------------------------------------------- > >>ADDITIONI OF SUBAREA TO MAINLINE PEAK FLOW < <(<< 5.00 YEAR RAINFALL INTENSITY(INCH/HOUR) = 1.265 SOIL CLASSIFICATION IS "A" LA+IDS LOPED WATERSHED RUN40FF COEFFICIENT = .3527 SUBAREA AREA(ACRES) = 18.30 SUBAREA Rt F(CFS) = 8.17 TOTAL AREA(ACRES) = 33.90 TOTAL. RUNOFF(CFS) = 20.53 TC(MIN) = 34.79 FLOW PROCESS FROM NODE 160.00 TO NODE 161.00 IS CODE = 5 ---------------------------------------------------------------------------- ))) >>COMPUTE TRAPEZOIDAL- CHANNEL FLOW« << > > > >)TRAVELTIME THRU SUBAREA < <<<< UPSTREAM NODE ELEVATION = 428.00 DOWNSTREAM NODE ELEVATION = 414.50 CHANNEL LENGTH THRU SUBAREA(FEET) = 590.00 CHANINIEL. BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 1.00 CHANNEL FLOW THRU SUBAREA(CFS) = 20.53 FLOW VELOCITY(FEET /SEC) = 2.09 FLOW DEPTH(FEET) _ .39 TRAVEL TIME(MIN.) = 3.65 TC(MIN.) = 38.44 FLOW PROCESS FROM NODE 161.00 TO NODE 161.00 IS CODE = 8 ---------------------------------------------------------------------------- :.))))ADDITION OF SUBAREA TO MAINLINE PEAK FLOW «<C< / 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.191 SOIL CLASSIFICATION IS 'A' UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .3220 SUBAREA AREA(ACRES) = 4.20 SUBAREA RUNOFF(CFS) = 1.61 TOTAL AREA(ACRES) = 43.10 TOTAL RLNOFF(CFS) = 22.15 TC(MIN) = 38.44 FLOW PROCESS FROM NODE 161.00 TO NODE 10.00 IS CODE = 5 ----------------------------------------------------- =---------------------- m >> COMPUTE TRAPEZOIDAL- CHANNEL FLOW< <<< » » >TRAVELTIME THRU SUBAREA ««< UPSTREAM NODE ELEVATION = 414.50 DOWNSTREAM NODE ELEVATION( = 407.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 400.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 22.15 FLOW VELOCITY(FEET /SEC) = 2.49 FLOW DEPTH(FEET) = .42 TRAVEL TIME(MIN.) = 2.58 TC(MIN.) = 41.12 FLOW PROCESS FROM NODE 10.00 TO NODE 10.00 IS CODE = 3 ---------------------------------------------------------------------------- > > >>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW< «« 5.00 YEAR RAINFALL INTENSITY(INCH /HCUJR) = 1.144 SOIL CLASSIFICATION IS " A " UNDEVELOPED WATE.R90 RUNOFF COEFFICIENT = .3003 SUBAREA AREA(ACRES) = 2.00 SUBAREA RLNOFF(CFS) _ .69 TOTAL AREA(ACRES) = 45.10 TOTAL RUNOFF(CFS) TC(MIN) = 41.12 FLOW PROCESS FROM NODE 10.00 TO NODE 15.00 IS CODE = 5 » » >COMlPUTE TRAPEZOIDAL - CHANNEL FLOW « «< » » >TRAVELTIME THRU SUBAREA « «< UPSTREAM NODE ELEVATION = 407.00 DOWNSTREAM NODE ELEVATIONI = 402.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 280.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 22.83 FLOW VELOCITY(FEET /SEC) = 2.57 FLOW DEPTH(FEET) _ .42 TRAVEL TIME(MIN.) = 1.82 TC(MIN.) = 4194 FLOW PROCESS FROM MODE 15.00 TO NODE 15.00 IS CODE = 8 ---------------------------------------------------------------------- - - - - -- >f' .\ )ADDITION OF SUBAREA TO MAINLINE PEAK FLCW« <« 5.00 YEAR RAINFALL INTENSIT/(INCH /HOUR) = 1.115 SOIL CLASSIFICATION IS "A" UNDE'V'ELOPED WATERSHED RUNOFF COEFFICIENT = .2858 SUBAREA AREA(ACRES) = 2.10 SUBAREA RUNOFF(CFS) = .67 TOTAL AREA(ACRES) = 47.20 TOTAL RUNOFF(CFSi = 23.50 TC(MIN) = 42.94 * :xstsxst *ssxsx :st * *x:ttxttttt: Ott: tt* ttxtttttt *txttttttttxtxtxxx * *sx * *xts *x FLOW PROCESS FROM NODE 15.00 TO NODE 20.00 IS CODE = 5 >> > >COMPUTE TRAPEZOIDAL-CHANNEL FLOW ««< »; »TRAVELTIME THRU SUBAREA « «( UPSTREAM NODE ELEVATION = 402.00 N)WNSTREAM NODE ELEVATION = 390.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 700.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 23.50 FLOW VELOCITY(FEET /SEC) = 2.29 FLOW DEPTH(FEET) _ .45 TRAVEL TIME(MIN.) = 5.10 TC(MIN.) = 43.64 * xs****s***sss***ss* x* x**s isxxss: xx*ss xx*ss** xx *x * * * * * *s * * *s * * * * *tsx *xx *ssxs FLOW PROCESS FROM NODE 20.00 TO NODE 20.00 IS CODE = 8 ---------------------------------------------------------------------- - - - - -- »» ` OF SUBAREA TO MAINLINE PEAK FLOW« «< - - - - - -- - -- 5.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.042 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .2465 SUBAREA AREA(ACRES) = 4.00 SUBAREA RUNOFF(CFS) = 1.03 TOTAL AREA(ACRES) = 51.20 TOTAL RL �NOFF (_'-FS) TC(MIN) = 48.04 sss tt*ss**** x** tsssssss tx* xs*s x******s*****s* s * * *sts * *sxtx * *:s *x *sssxxx *sss* FLOW PROCESS FROM NODE 20.00 TO NODE 30.00 IS CODE = 5 >» `,COMPUTE TRAPEZOIDAL-CHANNEL FLOW« «< » » >TRAVELTIME THRU SUBAREA <<<<< UPSTREAM NODE ELEVATION = 390.00 DOWNSTREAM NODE ELEVATION = 386.00 CHANNEL LENGTH THRU SUBAREA(FEET) _ 380.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR _ .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SJBAREA(CFS) = 24.53 FLOW VELOCITY(FEETiSEC) = 2.09 FLOW DEPTH(FEET) _ .48 TRAVEL TIME(MIN.) = 3.03 TC(MIN.) = 51.06 *s*s* xss xts x*sss xsss ts*s* xs xs* ts** xx*s** xxt*s *s * *sssxxxtxxxx *x *sx *xsxxttx * *s 1OW PROCESS FROM NODE 30.00 TO NODE 30.00 IS CODE = 8 ---------------------------------------------------------------------- - - - - -- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« « < - - ----- - - - - -- 5 .00 YEAR RAINFALL INTENSITY(INCH /HO R) = 1.00` SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .2240 .3 SUBAREA AREA(ACRES) = 6.30 SUBAREA RUNOFF(CFS) = 1.42 TOTAL AREA(ACRES) = 57.50 TOTAL RUNOFF(CFS) = 25.95 TC(MIN) = 51.06 FLOW PROCESS FROM NODE 30.00 TO MODE 30.00 IS CODE = 8 ---------------------------------------------------------------------------- > >\ ADDITION OF SUBAREA TO MAINLINE PEAK FLOW< «< - - -- - 5.00 YEAR RAINFALL INTENSITY(INCH /FOUR) = 1.005 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .2240 SUBAREA AREA(ACRES) = 14.90 SUBAREA RUNOFF(CFS) = 3.35 TOTAL AREA(ACRES) = 72.40 TOTAL RUNOFF(CFS) = 29.30 TC(MIN) = 51.06 FLOW PROCESS FROM NODE 30.00 TO NODE 175.00 IS CODE = 5 ---------------------------------------------------------------------- - - - - -- ) > >> XOMPUTE TRAPEZOIDAL - CHANNEL FLOW« << ) >>> TRAVELTIME THRU SUBAREA <<<;< UPSTREAM NODE ELEVATION = 356.00 DOWNSTREAM NODE ELEVATION = 382.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 615.00 CHANNEL BASE(FEET) = .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 29.30 C FLOW VELOCITY(FEETISEC) = 1.75 FLOW DEPTH(FEET) _ .58 TRAVEL TIME(MIN.) = 5.85 TC(MIN.) = 56.91 FLOW PROCESS FROM NODE 175.00 TO NODE 175.00 IS CODE ---------------------------------------------------------------------------- ») >> ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< - - -- - 5.00 YEAR RAINFALL INTENSITY(INCH /Him) = .941 SOIL CLASSIFICATION IS "A" SINGLE-FAMILY(1 - ACRE LOT) RUNOFF COEFFICIENT = .3155 SUBAREA AREA(ACRES) = 4.20 SUBAREA RUNOFF(CFS) = 1.25 TOTAL AREA(ACRES) = 76.60 TOTAL RUNOFF(CFS) = 30.55 TC(MIN) = 56.91 FLOW PROCESS FROM NODE 175.00 TO NODE 175.00 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) = 56.91 RAINFALL INTENSITY (INCH. /HOUR) _ .94 TOTAL STREAM AREA (ACRES) = 76.60 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE _ :.0.55 CONFLUENCE INFORMATION: STREAM RUNOFF TIME INTENSITY NUMBER (CFS) (MIN.) (INCH /HOUR) ---------------------------------------------------------------------- - - - - -- 149.77 35.69 1.246 30.55 56.91 .941 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO FORMULA(SBC) USED FOR 2 STREAMS. VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS: 168.93 143.74 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: RUNOFF(CFS) = 168.93 TIME(MINUTES) = 35.688 TOTAL AREA(ACRES) = 218.70 END OF RATIONAL METHOD ANALYSIS ------ - - - - -- RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM{ BASED ON SAN BERNARDINO COUNTY (SBC) 1983 HYDROLOGY MANUAL (C) Copyright 1933,1936 Advanced Engineering Software (AESI Especially prepared for: MADOLE AND ASSOCIATES tt' ti= .'atCtt {tit {r'rC {ti * * * * * * * ** *DESCRIPTION OF * TR 1314 EXISTING ONSITE & OFFSITE 010 * rFONTANA * 1/1'/90 [FILE EX12314.0101 3N 142-609 x* xxxxxx*** xxx* x** xxxxx** x* xx* xxx* xx* xxxx* xxx * * *xxxx *xxx **xx * *xxx * *xx * * *x * *x --------------------------------------------------------- USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: USER SPECIFIED STORM EVENT(YEAR) = 10.00 SPECIFIED MINIMUM PIPE SIZE(INCH) = 13.00 SPEG PERCENT OF GRADIENTS (DECIMAL) TO 'U'SE FOR FRICTION SLOPE _ . 95 10 -YEAR STORM 60- MINUTE INTE.NSITY(INCH/HOUR) = 1.040 100 -YEAR STORM 60- MINUTE INTENSITY(INCH /HOUR) = 1.540 COMPUTED RAINFALL INTENSITY DATA: STORM EVENT = 10,00 [-HOUR INTENSITY(INCH /HOUR) = 1.0504 SLOPE OF INTENSITY DURATION CURVE _ .6000 SBC HYDROLOGY MANUAL "C "- VALUES USED Advanced Engineering Software (AES) SERIAL No. 106651 VER. 3.3C RELEASE DATE: 21 C { -, -. \ { { ? }} ?rt } } } }rrr }? r? x�: �xxxx: �: xxx�* ���== x�: xxs xxx* xx** xx* xxxx* xxxxxxx *xxxx *xxx *xxxxx *xx * *x * ** FLOW PROCESS FROM NODE 4.00 TO NODE 100.00 IS CODE = 2 ---------------------------------------------------------------------------- }} }} }RATIONAL METHOD INITIAL SUBAREA ANALYSIttt('t ASSUMED INITIAL. SUBAREA UNIFORM DEVELOPM IS SINGLE FAMILY (I 14 ACRE) TC = K *1(LENG * *3) /(ELEVATION CHANGE)1 * *.2 INITIAL SUBAREA FLOW- LENGTH = 600.00 UPSTREAM ELEVATION = 515.00 DOWNSTREAM ELEVATION = 501.50 ELEVATION DIFFERENCE = 13.50 TC = .393 *1( 600.00 * *3) /( 13.50)1 * *.2 = 10.334 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 2.933 @IL CLASSIFICATION IS "A" SINGLE -FAMILY (1 /4 ACRE LOT) RUNOFF COEFFICIENT = .7423 SUBAREA RUNOFF(CFS) = 3.50 TOTAL AREA(ACRES) = 3.90 TOTAL RUNOFF(CFS) = 3.50 xx* xxx *xxxxxxxxxxxxxxxxxxxx ****xxxxxx *xxx *xx **xxxx* :xxxx *xxxx* *xxxx ***xxxxxx FLOW PROCESS FROM NODE 100.00 TO MODE 105.00 IS CODE = 6 ---------------------------------------------------------------------------- ))) %:COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA;:£ < UPSTREAM ELEVATION = 501.50 DOWNSTREAM ELEVATION = 4K.50 STREET LENGTH(FEET) = 510.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 13.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 12.92 STREET FLOWDEPTH(IEET) _ .37 HALFSTREET FLOODWIDTH(FEET) = 12.07 AVERAGE FLOW VELOCITY (FEET,'SEC. ) = 4.10 PRODUCT OF DEPTH &VELOCITY = 1.51 STREETFLOW TRAVELTIME(MIN) = 2.07 TC(MIN) = 12.91 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 2.641 SOIL CLASSIFICATION IS "A' t SINGE- FAMILY(II4 ACRE LOT) RIFF COEFFICIENT = . 7 1309 SUBAREA AREA(ACRES) = 4.60 SUBAREA RUNOFF(CFS) = 3.33 SUMMED AREA(ACRES) = 3.50 TOTAL RU%uFF(CFS) = 1 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH (FEE 1 = .40 HALFSTREET FLOODWIDTH(FEET) = 13.62 FLOW VELOCITY(FEET /SEC.) = 4.41 DEPTH *VELOCITY = 1.76 *xxxxxx *x * *xx **xxxxxx ** xxx* xxxxxxxx *xxxxxxxxxxxxxxxxxxxxxxxxxx *x* *xxxx **xxxx FLOW PROCESS FROM NODE 105.00 TO NODE 106.00 IS CODE = 6 ---------------------------------------------------------------------------- » > >> COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<<{CC UPSTREAM ELEVATION = 453.50 DOWNSTREAM ELEVATION = 476.50 STREET LENGTH(FEET) = 505.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 13.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED (USING MEAN FLOW(CFS) = 21.33 STREET FLOWDEPTH(FEET) _ .43 HALFSTREET FLOODWIDTH(FEET) = 15.16 AVERAGE FLOW VELOCITY(FEET /SEC.) = 4.41 PRODUCT OF DEPTH &VELOCITY = 1.39 STREETFLOW TRAVELTIME(MIN) = 1.91 TC(MIN) = 14.31 10.00 YEAR RAINFALL !NTENSITY(INCH /HOUR) = 2.431 SOIL CLASSIFICATION IS 'A" SINGE-FAMILY(1 1 1 4 ACRE LOT) RUNOFF COEFFICIENT = .7206 SUBAREA AREA(ACRES) = 4.50 SUBAREA RUNOFF(CFS) = 7.35 SUMMED AREA(ACRES) = 13.00 TOTAL RUNOFF(CFS) _ ^5.26 END OF 31BAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .45 HALFSTREET FLOODWIDTH(FEET) = 16.20 7 FLOW VELOCITY(FEET /SEC.) = 4.61 DEPTH * VELCCITY = 2.07 AomAl FLOW PROCESS FROM NODE 106.00 TO NODE 110.00 IS CODE = 6 ---------------------------------------------------------------------------- ))):)COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA;';XXX UPSTREAM ELEVATION = 476.50 DOWNSTREAM ELEVATION = 463.00 STREET L NGTH(FEET) = 465.00 CURB HEIGTH (INCHES) = 6. o;TREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED 'UMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 28.53 ::TREETFLOWDEPTH(FEET) _ .48 HAL REET FLOODWIDTH(FEET) = -7 -7 4 C e A'v`ERA��E FLC'W rR015iUCT OF rko FTH&VELOCITY TIM"' r - T 3) _ c. 3T7 ;i : :'Mil N H;ZLTI CIMIN) = 1. i� iC ( 16. Mir(/ - .�� !NTE ALI NSITY;iE;CHIH iv.00 Y EAR RAIiF UR) _ _,..� SOIL CLA.SIFICATTON IS "A" A SINGLE- FMILY ACRE LOT) UltOFF C:CEFFI! LENT = .'i1!. °3 rA REA AREA(FiCRE ) - 4.1�r `at'Lfir:En R lV F` .: Si t�MMEt AREA, CRE 1 = 1i,i�' iuThL RU,dC;F; ! +_r_; = = r'1% F 3UBAnEA TF;EET` t! l lyYi - -. i`�l iFiili = i 1hL ='` ?i1E =. .LL_i +d1L:h;. C;; IC. f [ ir'r _ [r - _ �'��'/ . E___If r if =rT. ml-i - »a _• i`tPiH -- , � 2. C _ n C PR OC-.. r oMl 4OT� .0 ' 1 10 NOD t 1- nc � -- .. `LOW i VI �.J fK_.f i i ilv 11 �. I� it�,fC ti..w _ �.vy`t ---------------------------------------------------------------------------- .... C OMPU TE T r. il_ i, L� ] i REC I F_O i k",mv _L i X i KnU -- UPSTREAM ELEVATION = 45;3.00 DOWNSTREAM ELEVATION = 464.50 STREET LENGTH(FEET) = 365.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 15.00 STREET CROSSFALL(DECIMAL) = .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 37.29 ** *STREET FLOWING FULL # ** NOTE: STREETFLOW D(CEEDS TOP OF M. THE FOLLOWING STREETFLOW RESULTS ARE BASED ON THE ASSUMPTION T MT NEGLIBLE FLOW OCCURS OUTSIDE OF THE STREET CHNINEL. THAT IS, ALL FLOW ALONG THE PARKWAY, ETC., IS NEGLECTED. STREET FLOWDEPTH(FEET) = .55 HALFSTREET FLOODWIDTH(FEET) = 18.00 AVERAGE FLOW 4ELOCITY(FEETISEC.) = 4.06 PRODUCT OF DEPTH&VELOCITY = 2.25 STREETFLOW TRAVELTIME(MIN) = 1.50 TC(MIN) = 18.03 10.00 YEAR RAINFALL INTENSITY(INCH11HOUIR) = 2.15? SOIL CLASSIFICATION IS "A" ST 11�E-FAMILY(1i4 ACRE LOT) RUNOFF COEFFICIENT = .0042 SUBAREA , iRF�(ACRES) _ 7. SUBAREA RUNOFF(CFS) = 10. i9 SLIMMED AREA(ACRES) = 24.20 TOTAL RUNOFF(CFS) = 42.68 END OF SUBAREA STREETFLOW HYDRAULICS. DEPTH(FEET) = .5; HALFSTREET FLOODWIDTH(FEET) = 18.00 FLO !EUx:ITYiFEET!SEC:.) - 4. + rEPTH *VELOCiT = 2.4:7 FLOW P ROCESS FROM NODE 115.00 TO NODE 120.00 I5 CODE = 6 ---------------------------------------------------------------------------- >,rCOMPUTE STREETFLOW TRAVELTIME THRU SUBAREA<CC{ ----------------------------- UPSTREAM ELEVATION = 464.50 DOWNSTREAM ELEVATION = 462.50 STREET LENGTH(FEET) = 410.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 13.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 # *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 52.55 ** *STREET FLOWING FULL * ** NOTE: STREETFLOW EXCEEDS TOP OF CURB. THE FOLLOWING STREETFLOW RESULTS ARE BASED 014 THE ASSUMPTION THAT NEGLIBLE FLOW OCCURS OUTSIDE OF THE STREET CHANNEL. THAT IS, ALL FLOC! ALONG THE PARKWAY, ETC., IS NEGLECTED. 3NiREET FLOWDEPTH(FEET) _ .69 HALFSTREET FLOODWIDTH(FEET) = 15.00 AVERAGE FLOW VELOCITY(FEETISEC.) = 3.73 PRODUCT CIF DEPTHSVELOCITY = 2.58 STREETFLOW TRAVELTIME(MIN) = 1.53 TC(MIN) = 19.32 10.00 YEAR RAINFALL INTENSIT'd(INCH /HOUR) = 2.036 SOIL CLASSIFICATION IS "A" SINE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6955 SUBAREA AREA(ACRES) = 13.90 SUBAREA RUNOFF(CFS) = 19.68 SUMMED AREA (ACRES) = 38.10 TOTAL RUNOFF (C S) = 6.36 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .73 HALFSTREET FLOODWID4I11(FEET) = 15.00 FLOW VELOCI TY(FEEI /SEC.) = 4.02 DEPTH *VELOCITY = 2.94 FLOW PROCESS FROM P,�P�E 12:'.00 TO NODE 12`.00 IS CODE = 6 ---------------------------------------------------------------------------- >; : C :OM1Pl STREETrLOW TRAVELTIME THRU SUBAREA;::;( -------------------------- UPSTREAM ELEVATION = 462.50 DOWNSTREAM ELEVATION = 460.00 STREET LENGTH(FEET) = 530.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HAL.FSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 74.16 ** *STREET FLOWING FULL * ** NOTE: STREETFLOW EXCEEDS TOP OF CURB. THE FOLLOWING STREETFLOW RESULTS ARE BASED ON THE ASSUMPTION THAT NE(LIBL.E FLOW OCCURS OUTSIDE OF THE STREET CHANNEL. THAT IS, ALL FLOW ALONG THE PARKWAY, ETC., IS NEGLECTED. STREET FLOWDEPTH(FEET) _ .77 HALFSTREET FLOODWIDTH(FEET) = 18.00 AVERAGE FLOW VELOCITY(FEET /SEC.) = 4.39 PRODUCT OF DEPTH&VELOCITY = 3.37 STREETFLOW TRAVELTIME(MIN) = 2.01 TC(MIN) = 21.93 10.00 YEAR RAINFALL INTENSITY(INCHMOUIR) = 1.921 SOIL CL.ASSIFFICATION IS "A" Ampk SINE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6863 SUBAREA AREA (ACRES) = 17.90 SUBAREA RUNOFF(CFS) _ 23.61 SUMMED AREA(ACRES) = 56.00 TOTAL RXfF(CFS) = 85.96 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .83 HALFSTREET FLCGODWIDTH(FEfi) = 18.00 FLOW VELOCITY(FEETiSEC.) = 4.52 DEPTH *VELOCITY = 3.74 ############################################# # ## # # ## # # # # # # # ## # # # # # # # # # # # # # ## FLOW PROCESS FROM NODE - -- 125.00 TO NODE - -- 130.00 IS CODE - - -- 6 - - - - - ------ - - - - -- z,,. STREETFLOW TRAVELTIME THRU SUBAREA(:�{< UPSTREAM ELEVATION = 460.00 DOWNSTREAM ELEVATION = 456.50 STREET LENGTH(FEET) = 405.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 13.00 STREET CROSSFALL(DECIMAL) = .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 90.59 * **STREET FLOWING FULL * ** NOTE: STREETFLOW E)�CEEDS TOP OF CURB. THE FOLLOWING STREETFLOW RESULTS ARE BASED ON THE ASSUMPTION THAT NEGL IBLE FLOW OCCURS OUTSIDE OF THE STREET CHANNEL. THAT IS, ALL FLOW ALONG THE PARKWAY, ETC., IS NEGLECTED, SHEET FLOWDEPTH(FEET) = .75 HALFSTREET FLOODWIDTH(FEET) = 13.00 AVERAGE FLOW VELOCITY(FEET /SEC.) = 5.55 PROIUCT OF DEPTH &VELOCITY = 4.19 STREETFLOW TRAVELTIME(MIN) = 1.21 TC(MIN) = 23.14 10.00 YEAR RAINFALL INTENSITY(INCHIHOUR) = 1.861 SOIL CLASSIFICATION IS "A" SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6310 SUBAREA AREA(ACRES) = 7.30 SUBAREA RUNOFF(CFS) = 9.25 SUN D AREA(ACRES) = 63.30 TOTAL RUNOFF(CFS) = 95.21 END OF SUBAREA STREETFLOW HYDRAULICS: C DEPTH(FEET) = .77 HALFSTREET FLOODWIDTH(FEET) = 18.00 FLOW VELOCITY(FEET /SEC.) = 5.63 DEPTH *VELOCITY = 4.33 x * # # #x # # ## xxx # # #xx # # # * # * *x # # * * * * #xx # * *x # # # ## xxx #xxx # *x * * # #xx # * *xx #x # *x *x # # ** FLOW PROCESS FROM NODE 130.00 TO NODE 130.00 IS CODE = i ---------------------------------------------------------------------- - - - - -- '>', .,: DESIGNATE INDEPENDENT STREAM FOR CONiFLUENCE «< << CONFLUENCE VALLES USED FOR INDEPENDENT STREAM i ARE: TIME OF CONCENTRATIOV(MINUTES) = 23.14 RAINFALL INTENSITY (INCH. /HOUR) = 1.36 TOTAL STREAM AREA (ACRES) = 63.30 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 95.21 FLOW PROCESS FROM NODE 5.00 TO NODE 121.00 IS CODE = 2 ---------------------------------------------------------------------- - - - - -- "`)RATIONAL METHOD INITIAL SUBAREA ANALYSIS<(<<< ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS SINGLE FAMILY (1/4 ACRE) TC = K *[(LENGTH * *3) /(ELEVATION CHANGE)]**.,. INITIAL SUBAREA FLOW-LENGTH = 600.00 !STREAM ELEVATION = 509.00 DOWNSTREAM ELEVATION = 497.00 ELEVATION DIFFERENCE = 12.00 TIC = .393 *[( 600.00 * *3) /( 12.00)1 * *.' = 11.092 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 2.592 SOIL CLASSIFICATION IS "A" SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .7413 n SUBAREA RUNOFF(CFS) = 2.75 TOTAL AREA(ACRES) = 4.10 TOTAL RUNOFF(CFS) = 2.79 FLOW PROCESS FROM NODE 121.00 TO NODE 126.00 IS CODE = 6 ---------------------------------------------------------------------------- >>> COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA« << -- UPSTREAM ELEVATION = 457.00 DOWNSTREAM ELEVATION = 494.00 STREET LENGTH(FEET) = 495.00 CURB HEIGTH(INCHES -i = 6. STREET HALFWIDTH(FEET) = 12.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 13.15 STREET FLOWDEPTH(FEET) _ .45 HALFSTREET FLOODWIDTH(FEET) = 16.20 AVERAGE FLOW VELOCITY(FEET /SEC.) = 2.40 PR0DUCT OF DEPTH &VELOCITY = 1.02 STREETFLOW TRAVELTIME(MIN) = 3.44 TC(MIN) = 14.53 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 2.455 SOIL CLASSIFICATION IS "A" SINGLE-FAMILY(1 14 ACRE LOT) RUNOFF COEFFICIENT = .7221 SUBAREA AREA(ACRES) = 4.50 SUBAREA RUNOFF(CFS) = 8.70 SUNNED AREA(ACRES) = 5.00 TOTAL RUNOFF(CFS) = 17.49 END OF SUBAREA STREETFLOW HYDRAULICS= DEPTH(FEET) _ .50 HALFSTREET FLOODWIDTH(FEET) = 12.00 FLOW VELOCITY(FEET /SEC.) = 2.48 DEPTH *VELOCITY = 1.23 ***** xxx** x* x*** xxxx********* xx**** x*** x***** x * * * * *x * * * * * *x * * * * *xx * * * * * * * * ** FLOW PROCESS FROM NODE 1 126.00 TO NODE 127.00 IS CODE = 6 ---------------------------------------------------------------------------- >> ?-»COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA« «< -- UPSTREAM ELEVATION = 494.00 DOWNSTREAM ELEVATION = 488.00 STREET LENGTH(FEET) 640.00 CURB FEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 1 1 2.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED DING MEAN FLOW(CFS) = 24.76 ** *STREET FLOWING FILL * ** STREET FLCWDEPTH(FEET) _ .50 HALFSTREET FLCODWIDTH(FEET) = 18.00 AVERAGE FLOW VELOCITY(FEET /SEC.) = 3.50 PRODUCT OF DEPTH&VELOCITY = 1.74 STREETFLOW TRAVELTIME(MIN) = 3.04 TC(MIN) = 17.58 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 2.154 SOIL CLASSIFICATION IS "A" SINGLE-FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .7067 SUBAREA AREA(AGRES) = 5.40 SUBAREA RUNOFF(CFS) = 14.58 SUMMED AREA(ACRES) = 18.40 TOTAL RUNOFF(CFS) = 32.07 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .54 HALFSTREET FLOODWIDTH(FEET) = 18.00 FLOW VELOCITY(FEET /SEC.) = 3.72 DEPTH *VELOCITY = 2.02 ******* x**** xxx*** x***** xxxx** x* xxx***** xxx* xx * * * * * * * * * * * *x * *x * * *x * * * *xxxx ** FLOW PROCESS FROM NODE 127.00 TO NODE 128.00 IS CODE = 6 (@ ---------------------------------------------------------------------- - - - - -- )'. )>>CGWUTE STREETFLOW TRAVELTIME THRU c3JBAREA - --------------------- ""�' UPSTREAM ELEVATION = 488.00 DOWNSTREAM ELEVATION = 477.00 r r STREET LENGTH(FEET) = 495.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 36.07 ** *STREET FLOWING FULL* ** STREET FLOWDEPTH(FEET) _ .50 HALFSTREET FLOODWIDTH(FEET) = 18.00 AVERAGE FLOW VELOCITY(FEET /SEC.) = 5. PRODUCT OF DEPTH&VELOCITY = 2.53 STREETFLOW TRAVELTIME(MIN) = 1.62 TC(MIN) = 19.19 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 2.081 SOIL C LASSIFICATION IS "A° SINGLE-FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6989 SUBAREA AREA(ACRES) = 5.50 SUBAREA RUNOFF(CFS) = 8.00 SUMMED AREA(ACRES) = 23.90 TOTAL RUNOFF(CFS) = 40.07 END OF SUBAREA STREETFLOW HYDRAULICS. DEPTH(FEET) _ .52 HALFSTREET FLOODWIDTH(FEET) = 18.00 10W V.L.00ITY(FEET /SEC.) = 5.16 DEPTH *VELOCITY = 2.66 FLOW PROCESS FROM NODE 128.00 TO NODE 129.00 IS CODE = 6 ---------------------------------------------------------------------- - - - - -- ;3> }COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA(<<<< - ---------------------------------------------------------------------------- UPSTREAM ELEVATION = 477.00 DOWNSTREAM ELEVATION = 467.00 STREET LENGTH(FEET) = 505.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET = 18. STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 43.84 ** *STREET FLOWING FULL* ** NOTE: STREETFLOW EXCEEDS TOP OF CURB. THE FOLLOWING STREETFLOW RESULTS ARE BASED ON THE ASSUMPTION THAT NEGLIBLE FLOW OCAS OUTSIDE OF THE STREET Cwa4El. THAT IS, ALL FLOW ALA THE PARKWAY, ETC., IS NEGLECTED. STREET FLOWDEPTH(FEET) _ .54 HALFSTREET FLOODWIDTH(FEET) = 18.00 AVERAGE FLOW VELOCITY(FEET /SEC.) = 5.17 PRODUCT OF DEPTH&VELOCITY = 2.77 STREETFLOW TRAVELTIME(MIN) = 1.63 TC(MIN) = 20.82 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.982 SOIL CLASSIFICATION IS "A" SINGLE-FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6913 SUBAREA AREA(ACRES) = 5.50 SUBAREA RUNOFF(CFS) = 7.54 SLOB AREA(ACRES) = 29.40 TOTAL. RUNOFF(CFS) = 47.61 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .54 HALFSTREET FLOODWIDTH(FEET) = 18.00 FLOW VELOCITY(FEET /SEC.) = 5.62 DEPTH *VELOCITY = 3.01 * x* x*x** x*** x* xx* x** xx** x** x** xx* x******* xx** * ** * * * * * * *x * * * *x *x *xx *xx *xx * * FLOW PROCESS FROM 14ODE 129.00 TO NODE 130.00 IS CODE = 6 - -------------------------------- - - - - -- - -- --------------------------------- t: tir.OMPUTE STREETFLOW TRAVELTIM E THRU SUBAREAt<tt Z' UPSTREAM ELEVATION = 467.00 DOWNSTREAM ELEVATION = 456.50 STREET LENGTH(FEET) = 470.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) = .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 51.21 ** *STREET FLOWING FULL* ** 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) = .54 HALFSTREET FLOODWIDTH(FEET) = 18.00 AVERAGE FLOW VELOCITY(FEET /SEC.) = 6.04 PRODUCT OF DEPTH &VELOCITY = 3.23 STREETFLOW TRAVELTIME(MIN) = 1.30 TC(MIN) = 22.12 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.912 SOIL CLASSIFICA' +ION IS "A" SINGLE-FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .6855 SUBAREA AREA(ACRES) = 5.5 SUBAREA RUNOFF(CFS) = 7.21 SUMMED AREA(ACRES) = 34.50 TOTAL RUNOFF(CFS) = 54.31 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) = .55 HALFSTREET FLOODWIDTH(FEET) = 13.00 FLOW VELOCITY(FEET /SEC.) = 5.97 DEPTH *VELOCITY = 3.31 ** x** xx**************** x* x* xx*** x** x* x*** xx** * * *x *xxx *x * *xx *xx * * * * *x * *x * * * ** FLOW PROCESS FROM NODE 130.00 TO NODE 130.00 IS CODE = 1 - -------------------------------------------------------- --- - - - - -- - ----------------------------------------- C _ - - \> > >> DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« <<< > >AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES « «< - - ------ - - - - -- -- CONFLUENCE VALUES USED FOR INDEPENDE:NIT STREAM 2 ARE: TIME OF CONCENTRATION(MINUTES) _ 2 2.11 RAINFALL INTENSITY (INCH. /HOUR) = 1.91 TOTAL STREAM AREA (ACRES) = 34.90 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 54.31 CONFLUENCE INFORMATION: STREAM RUNOFF TIME INTENSITY NUMBER (CFS) (MIN.) (INCH /HOUIF) ---------------------------------------------------------------------- - - - - -- 95.21 23.14 1.861 54.81 22.12 1.912 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO FORMULA(SBC) USED FOR 2 STREAMS. VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS: 148.56 145.82 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: RUNOFF(CFS) = 148.56 TIME(MINUTES) = 23.138 TOTAL AREA(ACRES) = 98.20 FLOW PROCESS FROM NODE 130.00 TO NODE 135.00 IS CODE = 6 ------------------------------------------------------------------ _ >.__.O:OMPUTE STREETFLOW TRA'vELTiME THiiU SUBhr .�===-= -== -==== -= -= =- = =-= Q UPSTREAM ELEVATION = 456.50 DOWNSTREAM ELEVATION = 440.00 STREET LENGTH (FEET) _ 700.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 1830 STREET CROSSFALL(DECIMAL) _ .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 153.79 ** *STREET FLOWING FULL * ** 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) _ .75 HALFSTREET FLOODWIDTH(FEET) = 18.00 AVERAGE FLOW VELOCITY(FEET /SEC.) = 9.49 PRODUCT OF DEPTH&VELOCITY = 7.12 STREETFLOW TRAVELTIME(MIN) = 1.23 TC(MIN) = 24.37 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.304 SOIL GLASSIFICATION IS "A" SINGLE-FAMIL'r(1 14 ACRE LOT) RUNOFF COEFFICIENT = .6756 Sr'BAREA AREA(ACKES) = 8.60 SUBAREA RINOFF(CFS) = 10.45 SUMMED AREA(ACRES) = 106.80 TOTAL RUNOFF(CFS) = 159.04 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) _ .77 HrL =STREET FLOODWIDTH(FEET) _ '18.00 FLOW VELOCITY(FEET /SEC.) = 9.40 DEPTH *VELOCITY = 7.24 FLOW PROCESS FROM NODE 135.00 TO NODE 136.00 iS CODE = 5 ---------------------------------------------------------------------- - - - - -- »» >COMPUTE TRAPEZOIDAL- CHANNEL FLOW;:((( C. >» )>TRAVELTIME THRU SUBAREA((((( -- UPSTREAM NODE ELEVATION = 440.00 DOWNSTREAM NODE ELEVATION = 427.50 CHANNEL LENGTH THRU SUBAREA(FEET) = 495.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 159.04 FLOW VELOCITY(FEET /SEC) = 4.31 FLOW DEPTH(FEET) TRAVEL TIME(MIN.) = 1.92 TC(MIN.) = 26.28 FLOW PROCESS FROM NODE 136.00 TO NODE 136.00 IS CODE = 8 -------------------------------------------------------------------- >> )>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW(((({ ---------------------------- 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.724 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .4351 SUBAREA AREA(ACRES) = 2.10 SUBAREA RUNOFF(CFS) = 1.76 TOTAL AREA(ACRES) = 103.90 TOTAL RUNOFF(CFS) = 160,80 T C(MIN) = 2 6.23 FLOW PROCESS FROM NODE 136.00 TO NODE 140.00 IS CODE = 5 -------------------------------------------------------------- '> ` `COMP�ITE TRAPEZOIDAL- C.Ia;NNEL FLOW(( <;(: Q i'..', ?TRAVELTIME THRU SUBAREA((((; UPSTREAM NODE ELEVATION = 427.50 DOWNSTREAM NODE ELEVATION = 410.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 515.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = '2.00 CHANNEL FLOUT THRU SUBAREA(CFS) = 160.80 FLOW VELOCITY(FEET /SEC) = 5.06 FLOW DEPTH(FEET) = .50 TRAVEL TIME(MIN.) = 1.69 TC(MIN.) = 27.95 FLOW PROCESS FROM NODE 140.00 TO NODE 140.00 IS CODE = 8 ---------------------------------------------------------------------------- ` >'ADDITICNJ OF SUBAREA TO MAINLINE PEAK FLOW« «; - -- - 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.660 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .4711 SUBAREA AREA(ACRES) = 4.70 SUBAREA RUNOFF(CFS) = 3.63 TOTAL AREA(ACRES) = 113.60 TOTAL RUN[- FF(CFS) = 164.47 TC(MIN) = 27.98 *** xx*s** xxs** x* x*** xs** x* x** xxx**s x*** xx*s* xx * * *x *x * * * * * * * *xx * * * * *x * * *s * *x* FLOW PROCESS FROM (NODE 140. 00 TO NODE 145.00 19 CODE = 5 ---------------------------------------------------------------------------- .o))%1COhPJTE TRAPEZOIDAL - CHANNEL FLOW(<(<< `: );'rTRAVELTIME THRU SUBAREA <<<(< UPSTREAM NODE ELEVATION = 417.50 DOWNSTREAM NODE ELEVATION = 410.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 215.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 KXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 164.47 FLOW VELOCITY(FEET /SEC) = 5.13 FLOW DEPTH(FEET) _ .80 TRAVEL TIME(MIN.) _ .69 TC(MIN.) = 28.67 *sss x*s***********:***s* xss*ss** xss xx*s xxsss xx ssxxxs * * * * * *xxxxsxxxx : *xxxxxxs FLOW PROCESS FROM NODE 145.00 TO NODE 145.00 IS CODE = 8 ---------------------------------------------------------------------------- `, )?%:ADDITION -OF SUBAREA TO MAINLINE PEAK FLOW <(((< 10.00 - YEAR RAINFALL INTENSITY(INCWHOUR) = 1.636 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .4655 SUBAREA AREM ACRES) = 5.10 SUBAREA RUNOFF(CFS) = 3.88 TOTAL AREA(ACRES) = 115.70 TOTAL RUNOFF(CFS) = 165.36 TC(MIN) = 25.67 ss xx* xxss xxs xxx* xxx* xxxx** xss* x*s xxx* xss xss xxxxx * * *xxsxx *s *xsxxx * *xx *sx *xxxs FLOW PROCESS FROM NODE 145.00 TO NODE 146.00 IS CODE = 5 -------------------------------------------------------------- - - - - -- - - - - -- ` >)> >C99UTE TRAPEZOIDAL- CHANNEL FLOW <(( << ;: ?; TRAVELTIME THRU SUBAREA« " UPSTREAM NODE ELEVATION = 410.00 DOWNSTREAM NODE ELEVATION = 401.00 CHANNEL LATH THRU SUBAREA(FEETi = 415.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 163.36 FLOW VELOCITY(FEET /SEC) = 4.24 FLOW DEPTH(FEET) _ .39 TRAVEL TIME(MIN.) = 1.63 TC(MIN.) = 30.30 FLOW PROCESS FROM NODE 146.00 TO NODE 146.00 IS CODE = 3 ---------------------------------------------------------------------------- ) )> ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« « < 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.533 SOIL GLASSIFiCATIC;Pd IS "A" UNDEVELOPED WATERSHED RUNCIFF COEFFICIENT = .4526 SUBAREA AREA(ACRES) = 3.30 SUBAREA RUNOFF(CFS) _ 2.36 TOTAL AREA(ACRES) = 1M.00 TOTAL RUNOFF(CFS) = 1;0.72 TC(MIN) = 30.30 # x* x#*# x# xxxxxxxx #xx #x * #x # *xx #xxxx * * *xx #x *xxx #x# #xxx # #xx # * *xx # * # # * *xx * * #xx #x FLOW PROCESS FROM NODE 146.00 TO NODE 146.00 IS CODE = 1 ---------------------------------------------------------------------- - - - - -- )))))DESI HATE INDEPENDENT STREAM FOR CONFLUENCE «< << CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MINUTES) = 30.30 RAINFALL INTENSITY (INCH. /HOUR) = 1.53 TOTAL STREAM AREA (ACRES) _ ]22.00 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 170.7' FLOW PROCESS FROM NODE 6.00 TO NODE 143.00 IS COLE = 2 ---------------------------------------------------------------------------- )i)))RATIONAL METHOD INITIAL SUBAREA ANALYSIS < < <« ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS: UNDEVELOPED WITH FAIR COVER TC = K *[(LENGTH * *3) /(ELEVATION CHANGE)] * *.2 INITIAL SUBAREA FLOW - LENGTH = 550.00 UPSTREAM ELEVATION = 443.00 DOWNSTREAM ELEVATION = 435.00 ELEVATION DIFFERENCE = 13.00 TC = .709 *(( 550.00 * *3) 1'( 13.00)1 * *.2 = 13.721 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 2.113 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED R114OFF COEFFICIENT = .55L3 SUBAREA RUNOFF(CFS) TOTAL AREA(ACRES) = 2.00 TOTAL RUNOFF(CFS) = 2.33 FLOW PROCESS FROM NODE 143.00 TO -NODE 147.00 IS CODE = 5 ---------------------------------------------------------------------- - - - - -- )))))COMPUTE TRAPEZOIDAL- CHANNEL FLOW" = == f:i= TRAVELTIME THRU - SUBAREA==._____________ ____________________ ________ ___ UPSTREAM NODE ELEVATION = 435.00 IOWNSTREAM NODE ELEVATION = 416.00 CHANNEL LENGTH THRU SUBAREA (FEET) = 905.00 CHANNEL BASE(FEET) _ .00 "t" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 1.00 CHANNEL FLOW THRU SUBAREA(CFS) = 2.33 FLOW VELOCITY(FEETiSEC) = 1.50 FLOW DEPTH(FEET) _ .17 TRAVEL TIME(MIN.) = 10.39 TC(MIN.) = 29.11 xx* x* xx* x* xx* x* xxx** xx* x**** xxxx* xxx* xxxxx*: xx * * *xxx * *xxxxxxxx * *xxxx * *x * *x ** FLOW PROCESS FROM NODE 147.00 TO )ODE 147.00 IS CODE = 0 ---------------------------------------------------------------------------- » >:s>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW« << 10.00 Y EAR RAINFALL INTENSITY(INCH /HOUR) = 1.621 ';OIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED KINOFF COEFFICIENT = .4620 SUBAREA AREA(ACRES) = 3.50 SUBAREA RUNOFF(CFS) = 2.62 TOTAL AREA(ACRES) = 5.50 TOTAL RUNOFF(CFS) = 4.96 TC(MIN) = 29.11 * x* x* xx** xxx* xxx*** xxxx** x* xx* xxxxx* x* xxx* xxxx * *xxxx * * *x * * * *x * * *xxx * * *x * *x ** F LOW PROCESS FROM NODE 147.00 TO NODE 146.* IS CODE = a ---------------------------------------------------------------------------- :: - >,: COMPUTE TRAPEZOIDAL-CW.JNEL FLOW«{ > » »TRAV'ELTIME THRU SUBAREA « «( UPSTREAM NODE ELEVATION = 416.00 DOWNSTREAM NODE ELEVATION = 401.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 670.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNIiS FACTOR = .030 MAXIMUM DEPTH(FEET) = 1.00 CHANNEL FLOW THRU SUBAREA(CFS) = 4.96 FLOW 'AELOCITY(FEET /SEC) = 1.00 FLOW DEPTH(FEET) _ .23 TRAVEL TIME(MIN.) = 6.19 TC(MIN.) = 35.30 FLOW PROCESS FROM NODE 146.00 TO NODE 146.00 IS CODE = 8 ---------------------------------------------------------------------------- >) >: >ADDITION OF SUBAREA TO MAINLINE PEAK FLOW< <<<< - -- - 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.444 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .4144 SUBAREA AREA(ACRES) = 1.0 SUBAREA RUNOFF(CFS) TOTAL AREA(ACRES) = 7.50 TOTAL RUNOFF(CFS) = 6.15 TC(MIN) = 35.30 * x*** xxxx** x* x* xxxx* x** xxxx* xxxxxxxxx* xxxx* xx *x * * * *xxx *x * * *x * *xx *xxxx *xxx * ** FLOW PROCESS FROM NODE 146.00 TO NODE 146.00 IS CODE = 1 � IYrd ----- --------------------------- > > >:s>DESI GNATE INDEPENDENT STREAM FOR CONFLUENCE «« < >» »AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES <<<<< -- CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MINUTE'S) = 35.:30 � RAINFALL INTENSITY (INCH.iHOUR) = 1.44 TOTAL STREAM AREA (ACRES) = 7.50 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 6.15 r CONFLUENCE INFORMATION: STREAM RUNOFF TIME INTENSITY NIUMBER (CFS) (MIN.) (INCH/HL 1 170.72 30.30 1.533 2 6.15 35.30 1.444 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO FORMULA(SBC) USED FOR 2 STREAM. VARIOUS CONFLUENCED RUNOFF VALUES ARE A FOLLOWS: 'x75.00 161.92 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: RUNOFF(CFS) = 176.00 TIME(MINUTES) = 30.298 TOTAL AREA(ACRES) = 129.50 * x#*## x# x###* xxxx####*###### xxx*## x* x*## xxxxx # # #xxxx # # ## # # #xx * * * #xx# # # # #x #x# FLOW PROCESS FROM NODE 146.00 TO NODE 170.00 IS CODE = 5 ---------------------------------------------------------------------- - - - - -- : > >> .'COMPUTE TRAPEZOIDAL- CHANNEL FLOW( <((< ,,,XeTRAVELTIME THRU SUBAREA((((< UPSTREAM NODE ELEVATION = 401.00 DOWNSTREAM NODE ELEVATION = 394.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 425.00 CHANNEL BASE(FEET) _ .00 " L " FACTOR = 50.000 C. MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 17 +6.00 FLOW VELOCITY(FFEETI_;EC) = 3.87 FLOW DEPTHIFEET) _ .95 TRAVEL TIME(MIN.I = 1.83 1MIN. = 32.13 ### x## x##### x## xx###* x#### x##*#### x### x#####* #x # #xx # #xx # #x #x # # *x # # * * #x # # # # #* FLOW PROCESS FROM NODE 170.00 TO NODE 170.00 IS CODE = 8 ---------------------------------------------------------------------------- }} }} }ADDITION OF SUBAREA TO MAINLINE PEAK FLN <<((< 10.00 YEAR RAINFALL INTENSITY(INCHIHOUR) = 1.528 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .4384 SUBAREA AREA(ACRES) = 1.50 SUBAREA RUNOFF(CFS) = 1.00 TOTAL AREA(ACRES) = 131.00 TOTAL RUNOFF(CFS) = 177.01 TC(MIN) = 32.13 FLOW PROCESS FROM NODE 170.00 TO NODE 175.00 IS C-CIDE = 5 ---------------------------------------------------------------------------- } } } >COMPUTE TRAPE7OIDAL- CHANNEL FLOW «;<< } } } } }TRAVELTIM)E THRU SUBAREA<< «< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- UPSTREAM NODE ELEVATION = 394.00 DOWNSTREAM NODE ELEVATION = 382.00 CHANNEL LENGTH THRU SUBAREA(FEET) _ 6-60.00 CHANNEL BASE(FEEI _ .00 "2" FACTOR = 50.000 MANNINGS FACTOR = .020 MAXIMUM DEPTH(FEET) = 2.00 g CHANNEL FLOW THRU S! BAREA (CF';) = 177.01 FLOW VELOCITY(FEET /SEC) = 5.57 FLOW DEPTH(FEET) _ .80 TRAVEL TIME(MIN.) = 1.97 TC(MIN.) = 34.10 * x** xtt*** t* tx* tx** x* x*** x* t** xxxtxx** xtx**:* xtxtx * * * *x *xxt * * *xtt *xtt * *t *xtt FLOW PROCESS FROM NODE 175.00 TO NODE 175.00 IS CODE = 8 ---------------------------------------------------------------------------- » » >ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<< «< 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.474 SOIL CLASSIFICATION IS "A' SINGLE- FAMILY(1 -ACRE LOT) RUNOFF COEFFICIENT = .5087 SUBAREA AREA(ACRES) = 11.10 SUBAREA RIiNOFF(CFS) = 3.32 TOTAL AREA(ACRES) = 142.10 TOTAL RUNOFF(CFS) = 135.3:3 TCMIN) = 34.10 * xx** x** xt* xxxxt*** xxt* xxxx** t** x* tt** x* ttxx* t *t * * * *xttt * * * *xt * * * *ttx * * *tt *t FLOW PROCESS FROM NODE 175.00 TO NODE 175.00 IS CODE = I ------------- --------------------------------------------------------------- »» >DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE <. «< CONFLUENCE VALUES USED FOR INDEPENDENT STREAM I ARE: TIME OF A NCENTRATICINIMINUTES) = 34.10 RAINFALL !NTEtq`Siif (INCH. /HOUR) = 1.47 TOTAL STREAM AREA (ACRES) = 142.10 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 135.33 ( * xtt* xxtt** txt** xxtttxt: tt* xxtxt* xxttxxxttt* xxttx *x *xtt * * * *x * * * *xt *x * * *tx *xx FLOW PROCESS FROM NODE 7.00 TO NODE 150.00 IS CODE = 2 ---------------------------------------------------------------------------- » » >RATIONAL METHOD INITIAL SUBAREA ANALYSIS «<<< ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS: UNDEVELOPED WITH FAIR COVER TC = K *I(LENGTH * *3) /(ELEVATION CHANGE)] * *.2 INITIAL SUBAREA FLOW - LENGTH = 730.00 UPSTREAM ELEVATION = 468.00 DOWNSTREAM ELEVATION = 457.00 ELEVATION DIFFERENCE = 11.00 TC = .709 *I( 730.00 * *3) /( 11.001 * *.2 = 22.941 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.870 SOIL CLASSIFICATION IS 'A' UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .5137 SUBAREA RUNOFF(CFS) = 4.52 TOTAL AREA(ACRES) = 4.70 TOTAL RUNOFF(CFS) = 4.52 tx* xtx* xxxt* x** txxxx* xxxt* x* tt* xxtxx* tx*** xxt *x *xt *x *xt *t *xx * * *xtt *xtt *xttxx FLOW PROCESS FROM NODE 150.00 TO NODE 151.00 IS CODE = 5 ---------------------------------------------------------------------------- » » \/COMPUTE TRAPEZOIDAL-CHANNEL FLOWM<< :l >:>': TRAVELTIME THRU SUBAREA<ffl< UPSTREAM NODE ELEVATION = 457.00 DOWNSTREAM NODE ELEVATION = 451.00 C1iANNEL LENGTH THRU SUBAREA(FEET) = 305.00 CHANNEL BASE(FEET) _ .00 FACTOR = 50.000 9 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SIIB = 4.52 FLOW VELOCITY(FEET /SEC) = 1.64 FLOW DEPTH(FEET) _ .23 TRAVEL TIME(MIN.) = 3.09 TC(MIN.) = 26.03 ROW PROCESS FROM NODE 151.00 TO NODE 151.00 IS COPE = 8 ---------------------------------------------------------------------------- >> >> \ADDITION OF SUBAREA TO MAINLINE PEAK ROW<C «< 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.734 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .4872 SUBAREA AREA(ACRES) = 3.: +0 gUBAREA RUNOFF(CFS) = 3.23 TOT+ AREA (ACRES) = E.60 TOTAL k1stFF(CFE) TC(MIN) = 26.03 ** xx# xttt## x# xxx*#*#**## tx## x* xt############# * * * # * # * #tx * * # *xx # * * #xx # * * *xxxxx FLOW PROCESS FROM NODE 151.00 TO NODE 155.00 IS CODE = 5 ---------------------------------------------------------------------- - - - - -- >COMPUTE TRAPEZOIDfiL- CHANNEL RC+W » > > >TRAVELTIME THRU SUBAREA ««< UPSTREAM NOME ELEVATION = 451.00 DOWNSTREAM NODE ELEVATION = 444.00 CHANNEL LENGTH THRU SUBAREA (FEET) = 325.00 CHANNEL BASE(FEET) = ,00 . FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 7.81 ROW VELOCITY(FEET /SEC) = 1.77 FLOW DEPTH(FEET) _ .30 TRAVEL TIME(MIN.) = 3.06 TC(MIN.) = 29.09 xxt*## xt*# t## tt# ttt# xx** xxxx* t* tx t# xtxx*##:* xttt *x #xxxtx *xxt # * # * * * *xtt # * #xt# FLOW PROCESS FROM NODE 155.00 TO NODE 155.00 IS CODE = 8 ---------------------------------------------------------------------------- » >\ )ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< - -- .10.00 YEAR RAINFALL INTENSITY(INCHIHOUR) = 1.622 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RMF COEFFICIENT 2 .4622 SUBAREA AREA(ACRES) = 5.00 SUBAREA RLVCFF(CFS) = 3.75 TOTAL AREA(ACRES) = 13.60 TOTAL RUNOFF(CFS) = 11.56 TC(MIN) = 29.09 * xx# x# xtttxxx# xtx* x* t*#*##*#*## txx# t***## xxxx * *x # #xxx *t *xxtx *xtx # #xttx * # *txx ROW PROCESS FROM NODE 155.00 TO NODE 156.00 IS CODE = 5 ---------------------------------------------------------------------- - - - - -- >) >))COMPUTE TRAPEZOIDAL-CHANNEL FLOW<,( << »» )TRAVELTIME THRU SUBAREA « «< UPSTREAM NODE ELEVATION = 444.00 DOWNSTREAM NODE ELEVATION = 436.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 415.00 CHiANNIEL BASE(FEET) = .00 "Z" FACTOR = 50.000 MAN,NINGS FACTOR = .030 KlIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) FLOW 'I'll OCITY(FEETISEC) = 2.15 ROW DEPTH(FEET) _ .�31 TRAVEL TIME(MIN.) = 3.21 TC(MIN.) _ ' **** x** xx** xx***** xx** x* xx* xxxx** xxxx* x* x*** x * * *xx *x * *xxx*x * *xx * * * * * * * *x *xx* FLOW PROCESS FROM NODE 156.00 TO NODE 156.00 IS CODE = 8 ---------------------------------------------------------------------------- »» %ADDITION OF SUBAREA TO MAINLINE PEAK FLOW< < <<< 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.523 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .4369 SUBAREA AREA(ACRES) = 7.00 SUBAREA RUNOFF(CFS) = 4.66 TOTAL AREA(ACRES) = 20.60 TOTAL RUNOFF(CFS) = 16.21 TC(MIN) = 32.31 FLOW PROCESS FROM NODE 156.00 TO NODE 160.00 IS CODE = 5 ---------------------------------------------------------------------- - - - - -- >> »COMPUTE TRAPEZOIDAL-CHANNEL FLOW << <<< ', > »> >TRAVELTIME THRU SUBAREA « «< UPSTREAM NODE ELEVATION = 436.00 DOWNSTREAM NODE ELEVATION = 428.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 320.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 W IMUM DEPTH(FEET) _ 2.00 GW L FLOW THRU SLBAREA(CFS) = 16.21 C FLOW VELOCITY(FEET /SEC) _ 2.51 FLOW DEPTH(FEET) _ .36 TRAVEL TIME(MIN.) = 2.12 TC(MIN.) = 34.44 ****** xx** xx** x** xxx* x*** xx* x** x************ x * *x * * * * * *x * * *x * * * * * * * * * *xx * * * *x FLOW PROCESS FROM NODE 160.00 TO NODE 160.00 IS CODE = 8 ---------------------------------------------------------------------------- » >> ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.466 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .4208 SUBAREA AREA(ACRES) = 18.30 SUBAREA RUNOFF(CFS) = 11.29 TOTAL AREA(ACRES) = 38.90 TOTAL RUNOFF(CFS) = 27.50 TC(MIN) = 34:44 FLOW PROCESS FROM NODE 160.00 TO NODE 161.00 IS CODE = 5 ---------------------------------------------------------------------------- >>>> \COMPUTE TRAPEZOIDAL - CHANNEL FLOW «« < >) » >TRAVELTIME THRU SUBAREA« <',< UPSTREAM NODE ELEVATION = 428.00 DOWNSTREAM NODE ELEVATION = 414.50 CHANNEL LENGTH THRU SUBAREA (FEET) = 590.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 1.00 CHANNEL FLOW THRU SUBAREA(CFS) = 27.50 FLOW VEL 7:ITY(FEET /SEC) = 1.68 FLOW DEr ^TH(FEET) _ .45 TRAVEL TIME(MIN.) = 3.67 TC(MIN.) _ :8.11 * xx** xx** xxx* xxxx* xx** xx** x* x** xx* xx* xx* xxx* xxxx * *xx *x *xx * *x *x *xx * *x * *xx *x *x - FLOW PROCESS FROM NODE - -- 161.00 TO NODE - -- 161_ - IS CODE - _ -- 8 >> » )ADDITION OF SUBAREA TO MAINLINE PEAK FLOW < <:« 10.00 YEAR RAINFALL INTENSITY(INCH /FOUR) = 1.379 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUFF COEFFICIENT = .3940 SUBAREA AREA(ACRES) = 4.20 SUBAREA RUNOFF(CFS) 2.23 TOTAL AREA(ACRES) = 43.10 TOTAL RUNOFF(CFS) = 29.78 TC(MIN) = 38.11 FL13W PROCESS FROM NODE 161.00 TO NODE 10.00 IS CODE = 5 ---------------------------------------------------------------------------- \>> > >COMPUt TRAPEZOIDAL- CHANNEL FLOW<<(« »» >TRAVELTIME THRU SUBAREA<e: « <: UPSTREAM NODE ELEVATION = 414.50 DOWNSTREAM NODE ELEVATION = 407.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 400.00 CHANNEL BALE 'FEET) = .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .fl30 MAXIMUM DEPTHiFEETJ = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = L. N. FLOW VELOCITY(FEET /SEC) = 2.54 FLOW DEPTH(FEET) _ .48 TRAVEL TIME(MIN.) = 2.63 TC(MIN.) = 40.73 t * x****** xxxx* xx** xxx* x***** x* x* x* x*** xx** xxx* *xxxx *xxxxxxxx * *xxx * * *x * * *xxxxx FLOW PROCESS FROM NODE 10.00 TO NODE 10.00 IS CODE = 8 ---------------------------------------------------------------------------- » »)ADDITION OF SJJBAREA TO MAINLINE PEAK FLOW<X%< - -- - 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.325 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .37,94 ,SUBAREA AREA(ACRES) = 2.00 SUBAREA RUNOFF(CFS) _ .99 TOTAL AREA(ACRES) = 45.10 TOTAL RUNL- -FF(CFS) = 30.78 TC(MIN) = 40.73 xxxxxxxxxxxxxxxx** x* x** x* x* xxx** x* x* x:* xx** xx *x * * * *xxxxxx * *x *x * *xx * * *xx * * * * FLOW PROCESS FROM NODE 10.00 TO NODE 15.00 IS CODE = 5 ---------------------------------------------------------------------- - - - - -- > > >>>COMPUTE TRAPEZZOIDAL- CHANNEL FLOW;< «< » > > >TRAVELTIME THRU SUBAREAi(((< UPSTREAM NODE ELEVATION = 407.00 DOWNSTREAM NODE ELEVATION = 402.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 280.00 CHANNEL BASE(FEET) = .00 "1 FACTOR = 50.000 MANNINGS FACTOR = .030 MkkIMUM DEPTH(FEET) = 2.00 aWMEL FLOW THRU SUBAREA(CFS) = 30.78 FLOW VELOCITY(FEET /SEC) = 2.62 FLOW DEPTH(FEET) _ .48 TRAVEL TIME(MIN.) = 1.78 TC(MIN.) = 42.51 * x******* x*** x** xx* xxx** xx** x* xxx** xxxx** x** xxxx *x *x * * *x *x * *x * * *x * * * * * * *x * *x FLOW PROCESS FROM NODE 15.00 TO NODE 15.00 IS CODE = 8 ---------------------------------------------------------------------------- »i ?ADDITION OF SUBAREA TO MAINLI14E PEAT; FLOW<<<<<. 10.00 YEAR RAINFALL INTENSITY(INCHIHOUR) _ 1.232 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .3630 SUBAREA AREA(ACRES) = 2.10 SUBAREA RUNOFF(CFS) _ .98 TOTAL AREA(ACRES) = 47.20 TOTAL RUNOFF(CFS) = 31.75 TC(MIN) = 42.51 x** x** xxx* xxxxxx** xx***** xx***** x** x** x* xxxtxxx * *xx * * *xx *xxx *xx *x *xxxxxxxx * FLOW PROCESS FROM NODE 15.00 TO NODE 20.00 IS CODE = 5 ---------------------------------------------------------------------------- »)))COMPUTE TRAPEZOIDAL- CHANNEL FLOW«<<< ..., TRAVELTIME THRU SUBAREA(« X< -- UPSTREAM NODE ELEVATION = 402.00 DOWNSTREAM NODE ELEVATICNJ = 390.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 700.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) CHANNEL FLOW THRU SUBAREA -1 CES) = 31.76 FLOW VELOGITY(FEETI -SEC) = 2.71 FLOW DEPTH(FEET) TRAVEL TIME(MIN.) = 4.31 TC(MIN.) = 46.82 *** xx**** xxx* x** xx** xx** xxxxx* x* xxxx* x***** xx * * *x * *x * *xxx *xx * * * * *xx * * * * * * * FLOW PROCESS FROM NODE 20.00 TO NODE 20.00 IS CODE _ '3 ---------------------------------------------------------------------------- >)» )ADDITION OF SUBAREA TD MAINLINE PEAK FLOW<=:: «< 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.219 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUFF COEFFICIENT = .3340 SUBAREA AREA(ACRES) = 4.00 SUBAREA RUNOFF(CFS) = 1.63 TOTAL AREA(ACRES) = 51.20 TOTAL RUNOFF(CFS) = 33.39 TC(MIN) = 46.52 # xxxxxx: x: xx:x xx xx:: xxxxxxxxxxxx* xxxxxxsx*** x * * *x *xx * * * * * * * * * * * * ** *x * * * *xxx* FLOW PROCESS FROM NODE 20.00 TO NODE 30.00 IS CODE = 5 ------------------------------------------------------------------------- >>>l ?COMPUTE TRAPEZOIDAL - CHA & FLOW<< «( ), >) >TRAVELTIME THRU SUBAREA « «< -- UPSTREAM NODE ELEVATION = 390.00 DOWNSTREAM NODE ELEVATION = 386.00 CHANNEL LENGTH THRU SUBAREA(FEET) = 380.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH(FEET) = 2.00 CHANNEL FLOW THRU SUBAREA(CFS) = 33.39 FLOW VELOCITY(FEET /SEC) = 2.23 FLOW DEPTH(FEET) _ .55 TRAVEL TIME(MIN.) = 2.84 TC(MIN.) = 49.60 * x* xx* x*** xxx* xx** x** x** x*** x* x** x* xx** x* x*** x * * *xx * *xxx *xx * * * * * * *x *x *x *x * ** Eg) FLCI PRDCttiS FROM NODE 30.00 TO NODE 30.CK iS CODE = 8 ---------------------------------------- - - - - -- > >> »ADDITION OF SUBAREA TO MAINLINE PEAK FLOW <<<<< 10.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 1.177 SOIL CLASSIFICATION IS "A" UNDEVELOPED WATERSHED RUNOFF COEFFICIENT = .3154 SUBAREA AREA(ACRES) = 6.30 SUBAREA RUNOFF(CFS) = 2.34 TOTAL AREA(ACRES) = 57.50 TOTAL. RUNOFF(CFS) = 35.73 TC(MIN) = 49..66 xx* x* xxx* xx* xxx: x* xxxxxx* xx* xx** xxxxxxxxxxxx* xxxxx *x *� * *xxxxxxx *xxx *x * : *xxxx FLOW PROCESS FROM NODE 30.00 TO NODE 30.00 IS CODE _ 8 » > »ADDITD_N OF SUBAREA TO MAINLINE PEAK FLOW < < - -- - 10.00 YEAR RAINFALL INTENSITY (INCH /Hr-9- R) = 1.177 SOIL CLASSIFICATION IS "A" UNDE'V'ELOPED WATERSHED RUNOFF COEFFICIENT = .3154 SUBAREA AREA(ACRES) = 14.90 SUBAREA RUNOFF(CFS) = 5.5J TOTAL AREA(ACSSS) = 72.40 TOTAL RUNOFF(CFS) = 41.26 iCs`MIN) = 49.66 xx** xxxxx* xxxx* xxxxxxxxxxxx* xxxxx* xxxxxxxxxxxxxx * *x * *xx * *xx * *x * *xxxxxxxx *xxx FLOW PROCESS FROM NODE 30.00 TO NODE 175.00 IS CODE = 5 » >> ',COMPUTE TRAPEZOIDAL - CHANNEL FLOW « «< `>X- TRAVELTIME THRU SUBAREA( «( UPSTREAM NODE ELEVATION = 386.00 DOWNSTREAM NODE ELEVATION = 3*32.00 CHANNEL LD46TH THRU SUBAREA(FEET) = 115.00 CHANNEL BASE(FEET) _ .00 "Z" FACTOR = 50.000 MANNINGS FACTOR = .030 MAXIMUM DEPTH (FEET) = 2.00 CHAp4NEL FLOW THRU SUBAREA(CFS) = 41.26 FLOW VELOCITY(FEET /SEC) = 1.93 FLOW DEPTH(FEET) _ .67 TRAVEL TIME(MIN.) = 5.61 TC(MIN.) = 55.26 *** xx******** xx***** x** xx**** xxx** x** x* x* xx* xxx * *xx *xx *xx * * * *x *x *xxx *xxxxxxx FLOW PROCESS FROM NODE 175.00 TO NODE 175.00 IS CODE _ 8 ---------------------------------------------------------- ------------------ > >'0ADDITION SUBAREA TO MAINLINE PEAK FLOW « «< - -- - 10.00 YEAR RAINFALL INTENSITY(INCH /H(LJt) = 1.104 SOIL CLASSIFICATION IS "A" SINGLE- FAMILY(1 -ACRE LOT) RUNOFF COEFFICIENT = .3940 SUBAREA AREA(ACRES) = 4.20 SUBAREA RUNOFF(CFS) = 1.33 TOTAL AREA(ACRES) = 76.60 TOTAL RU = 43.09 TC(MIN) = 55.26 xxx: xx* xxx* xxxx* xxx* xxxx* xxx* x�** xxxxxxxxxxx* xxxxxxxxxxxxxx :xxxxx *xxx * * :xxxx FLOW PROCESS FROM NODE 175.00 TO NODE 175.00 IS CODE = 1 > ? >>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE« «< ,-,>' COMPUTE VARIOUS CONFLUENCED STREAM VALUES« «< - ------------------ - - - - -- --------------------------------------- -- CO NFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: G¢ TIME OF CONCENTRATION(MINUTES) = 55.26 RAINFALL INTENSITY (INCH.IHOUR) = 1.10 TOTAL STREAM AREA (ACRES) = 76.60 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 43.05 CONFLUENCE INFORMATION: STREAM RU40 F TIME INTENSITY NUMBER (CFS) (MIN.) (INCHJHOUR) ---------------------------------------------------------------------------- 1 185.33 34.10 1.474 2 43.09 55.26 1.104 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO FORMULA(SBC) USED FOR 2 STREAMS. VARIOUS CONFLUENCED RUFF VALUES ARE AS FOLLOWS: 211.92 1C1.31 COMPUTED CONFL BU ESTIMATES ARE AS FOLLOWS: RUNOFF(CFS) : 211.92 TIME(MINUTES) = 34.100 TOTAL AREA(ACRES) = 213.70 END OF RATIONAL METHOD ANALYSIS 0-7 ------ - - - - -- RATIONAL METHOD HYDROLOGY COMPUTER PR0GRAM BASED ON SAN BERNARDINO COUNTY (SK) 1333 HYDROLOGY N AL (( (t( ((( i\ >'X) \\ , .\ is •,,, { {{{{ l( t( t(( t(({ Ct( ttC( t( t( ttt! l } . rr)li :r)rri!!!;!)!!!!Ir!lrii . (C) Copyright 1133,1386 Advanced Engineering Software [AES) Especially prepared for: MADOLE AND ASSOCIATES (((•.C, \�•,� {, •.� tip( \ \'iS�t ** * * * * * ** *DESCRIPTION OF REti' ULTS* x*** xxx** x* xxx *xx * * *x * *x * * * * *x *xxx *x *xxxxxx * TR 12314 EXISTING ONSITE & OFFSITE Gt25 * FONTANA * JN 142 -601 1117110 [FILE D412314.0251 xx** x************ x*************** xx**** x**** x * * * *x *x ** * * *x *xxx * * *x * * * * **xx ** --------------------------------------------------------- USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: - -------------------------------------------------------------------------- USER SPECIFIED STORM EVENT(YEAR) = 25.770 SPECIFIED MINIMUM PIPE SIZE(INCH) = 18.00 SPECIFIED PERCENT i� i�RMDIENTS(DECIMAL) TO USE F R FRICTION SLOPE _ . 15 10 -YEAR STi�FiM 60- MINUTE INTENSITY(INCH /HOUR) = 1.040 100 -YEAR STORM 60- MINUTE INTENSITY (INCH/ = 1.540 COMPUTED RAINFALL INTENSITY DATA: STORM EVENT = 25.00 1 -HOUR INTENSITY(INGH /HOUR) = 1.2147 SLOPE OF INTENSITY DURATION CURVE _ .6000 SBC HYDROLOGY MANUAL "C"- VALUES USED Advanced Engineering Software [AESI SERIAL No. I0665I JER. 3.3C RELEASE DATE: 2120136 tttt { {t(t4�(Lt.f' i. fr r frf,' = = •• \'�`� ) }�!)�} } \\ ti\ \ } }�,�• } "i \ }!!!! �y(( \{� \�(i(SC•, \ti�t((i(: i. =r }f: !. f !. rlrrrr.. rr. Nits . ** x ************* x x****** x******************** * * * * * * * * * * * * * * * * * *x * * ** * *** * *** FLOW PROCESS FROM NODE 4.00 TO NODE 100.00 IS CODE = 2 ------------------------ --------------------------------------------------- \W RATIONAL METHOD INITIAL SUBAREA ANALYSIS({ { {{ ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS SINGLE FAMILY (1/4 ACRE) TC = K *['LENGTH * *3);!ELEVATION CHANGE] ! * *.2 INITIAL SUBAREA FLOW- LENGTH = 600.00 UPSTREAM ELEVATIM- = 515.00 Ee DOWNSTREAM ELEVATION = 501.50 ELEVATION DIFFERENCE = 13.50 TC = .393 *I( 600.00 * *3) /( 13.50)) * *.2 = 10.834 25.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 3.392 SOIL CLASSIFICATION IS "A" SINGLE- FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .7573 SUBAREA RUNOFF(CFS) = 10.02 TOTAL AREA(ACRES) = 3.90 TOTAL RUNOFF(CFS) = 10.02 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 100.00 TO NODE 105.00 IS CODE = 6 > > > >COMPUTE STREETFLOW TRA'VELTIME THRU SUBAREAM“ UPSTREAM ELEVATION = 501.50 DOWNSTREAM ELEVATION = 488.50 STREET LENGTH {FEET) = 510.00 CURB HEIGTH (INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL (DECIMAL) = .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 15.30 STREET FLOWDEPTH(FEET) _ .39 HALFSTREET FLOODWIDTH(FEET) = 13.10 i J AVERAGE FLOW VELOCITY(FEET /SEC.) = 4.17 PRODUCT OF DEPTH&VELOCITY = 1.62 STREETFLOW TRAVELTIME(MIN) = 2.04 TC (MIN) = 12.87 25.00 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.059 SOIL CLASSIFICATION IS "A" SINGLE-FAMILY(1 /4 ACRE LOT) RUNOFF COEFFICIENT = .7472 SUBAREA AREA(ACRES) = 4.60 SUBAREA RUNOFF(CFS) = 10.51 SUMMED AREA(ACRES) = 8.50 TOTAL RUN0F(CFS) = 20.53 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) = .42 HALFSTREET FLOODWIDTH(FEET) = 14.65 FLOW VELOCITY(FEET /SEC.) = 4.54 DEPTH *VELOCITY = 1.90 ********************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FLOW PROCESS FROM NODE 105.00 TO NODE 106.00 IS CODE = 6 » » >COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA( «(( UPSTREAM ELEVATION = 488.50 DOWNSTREAM ELEVATION = 476.50 STREET LENGTH(FEET) = 505.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 18.00 STREET CROSSFALL(DECIMAL) = .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 25.24 STREET FLCWDEPTH(FEET) _ .45 HALFSTREET FLOODWIDTH(FEET) = 16.20 AVERAGE FLOW VELOCITY(FEET/SEC.) = 4.60 { PRODUCT OF DEPTH &VELOCITY = 2.07 STREETFLOW TRAVELTIME(MIN) = 1.83 TC(MIN) = 14.70 25.00 YEAR RAINFALL INTENSITY(IICH /HOUR) = 2.825 SOIL CLASSIFICATION IS "A" SINGLE- FAMILY;1 /4 ACRE LOT) RUNOFF COEFFICIENT = .7387 SUBAREA AREA(ACRES) = 4.50 SUBAREA RUNOFF(CFS) = 9.39 SUMMED , C , S: = r N0 = - � , .,E;:� �= :E�;,'..... ; :�±.CiJ TOTAL R�_.'V�.FF(CF.) - 29. ENI CF GU =T EET-.. HYDRAULICS: : S . DEFT (FEET; - .47 HALMREET FLCOD IDTH,(i Ctl) = 17.2 TT ( a , 'TH *. ELOCIT Y _ a. . S 1`LVTI ''rCL`i'_iT i iYT r'Ll•. ! - `f. l'�� 4t1 1 t% 1 - iL' ----- --ESS FROM N ---------------------- - - - --- --- .� r _ - ' CT'c - ;iic TU NtODE 4 4 10 C O- ic• 0liD 6 ) COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA /%< X(< UPSTREAM ELEVATION = 476.50 DOWNSTREAM ELEVATION = 463.00 STREET LENGTH(FET) = 465.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 13.00 STREET CROSSFALL(DECIMAL) _ .0 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) _ "33.91 ** *STREET F LOWING FULL * *$ STREET FLOWDEPTH(FEET) = .50 HALFSTREET FLl "+ODWII'TH(FEET) = 1'.00 AVERAGE FLOW VELOCITY(FEETiSEC.) = 4.'80 PRODUCT OF DEPTH&VELOCITY = 2.38 TREETFLOW TRAVELTIME(MIN) = 1.62 TC(MIN) = 16.32 25. +0 YEAR RAINFALL INTENSITY(IN+;H;HOUR) = 2.653 SOIL CLASSIFICATION IS "A" SINGLE-FAMILY(1 ACRE LOT) RUNOFF COEFFICIENT = .7315 SUBAREA AREA(ACRES) = 4.10 SUBAREA RUNOFF(CFS) SUMMED AREA(ACRES) - 17.10 TOTAL RUNOFF(CFS) = 37.93 END OF SUBAREA STREETFLOW HYDRAULICS: iPTH(FEET) _ .52 HALFSTREET FLOODWIDTH(FEET) = 13.110 FLOW VELOCTTY'(FEET,�'SEC.) = 4." DEPTH *VELOCITY = 2.51 FLOW PROCESS FROM NODE 110.00 TO NODE 111.00 IS CODE = 6 ------------------------------------------------------------ --------------- :''+;i ap ; "r; iTE S T'r,'EE T FLOW T RAVELTiI E THRU SUBAREA -- ►_IPSTREAM ELEVATION = 463.00 DOWNSTREAM ELEVATION = 464.5:+ STREET LENGTH(FEET) = 365.00 CURB HEIGTH(INCHES) = 6. STREET HALFWIDTH(FEET) = 13.00 STREET CRQ%r'ALL(DECIMAL) = .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 * *TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 44.33 ** *STREET FLOWING FULL * ** 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) = .59 HALFST FLOODWIDTH(FEET) = 13.00 AVERAGE FLOW VELOCITY(FEETSEC.) = 4.19 PRODUCT OF DEPTH &VELOCITY = 2.49 STREETFLOW T,4AVELTIME(MIN) = 1.45 TC(MIN) = 17.77 25.00 YEAR RAINFALL INTENSITY(INCH /HOUR) = 2.521 SOIL CLASSIFICATION IS "A" SINGLE- FAMILY(114 ACRE LOT) RUNOFF COEFFICIENT = .7253 SUBAREA AREA(ACRES) = 7.10 SUBAREA RUNCIFF(CFS) = 12.93 C l SUMMED AREA(ACRES) = 24.20 TOTAL RUNOFF(CFS) = 50.36 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET = .61 HALFSTREET FL "ODWIDTH(FEET) = 18.00 it +s Y yTi`E +:. = 4 `1 LLrT4 *VrLOCITY = 2.7r SLOW VE CIT (FE- .� y , i ******* t** t tt*t*tt*t* * *** * ** * * * * * * * * * * * * *“ ** * * * * * * * * * * * **t ** *** * * * * * * * * * * ** RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE (Reference: 1986 SAN BERNARDINO CO. HYDROLOGY CRITERION) (c) Copyright 1983 -: Advanced Engineering Software (aes) Ver. 5.2A Release Date: 7/08/88 Serial t 2938 Analysis prepared by: MADOLE and ASSOCIATES, INC. 1820 E. 16th STREET SANTA ANA, CALIFORNIA 92701 PHONE (714) 835 -2548 * * * * * * * * * * * * * * * * * * * * * * * * ** DESCRIPTION OF STUDY * * * * * * * * * * * * * * * * * * * * * * * * ** *_ TR 12314 DEV. G25 * * FONTANA * * JN 142 -609 * ******************************************* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** FILE NAME: TR12314.025 TIME /DATE OF STUDY: 14:59 1/17/1990 USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: *TIME -OF-C NTRATION MODEL*- - USER SPECIFIED STORM EVENT(YEAR) : 25.00 SPECIFIED MINIM 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) = 1.040 100-YEAR STORA 60- MINUTE 1NTENSITY(INCH/HOUR) : 1.520 COMPUTED RAINFALL INTENSITY DATA: STORM EVENT : 25.00 1 -HOUR INTENSITY(INC :H /HOUR) = 1.2069 SLOPE OF INTENSITY DURATION CURVE : .6000 F Tl. 'Aq-7 -/- - � N 1 4} -7ZO, - ** ****************************************** * * * * * * * * * * ** * * * * * * * * * *t * * * * * * ** FLOW PROCESS FROM NODE 2.00 TO NODE 60.00 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(FEET) 605.00 UPSTREAM ELEVATION(FEET) = 1432.70 DOWNSTREAM ELEVATION(FEET) = 1427.94 ELEVATION DIFFERENCE(FEET) : 4.76 TC(MIN.) _ .412 *[( 605.00 ** 3.00)1( 4.76)) ** .20 : 14.074 25 YEAR RAINFALL INTENSITY(INCH /HOUR) : 2.881 SOIL CLASSIFICATION IS "A" RESIDENTIAL -> 3 -4 DWELLINGS /ACRE SUBAREA LOSS RATE, Fm(INCH /HR) : .5820 SUBAREA RUNOFF (CFS) : 7.66 TOTAL AREA(ACRES) : 3.70 PEAK FLOW RATE(CFS) = 7.66 0 C.B. # / 2 A/ODE 46 fl4Ge /4° CURB OPENING ( Interception ) 1Aa gd•s /5, Given: (a) discharge Q /pp= /S.3 CFS 4/8,73 - 4 4 8 ,40 (b) street slope S = 2.O/.32.. 11 5= 75- 5 (c) curb type " -2 1' " pr ¢/015 (d) hall street width = ft. t /3• -4/8•/. Solution: Q /S /( ) Therefore y= D. 57 1 Q /L = 0.54 L = /5;3 / 0.5 = Z8, 33 (L for total interception) TRY: L= 2 ft. • L = 2/ /21 =16%711 a/y = .33/ DS? = 1 i9 3 i1 . QWQ= 16 • Q ,86 X /•3 = /3,2 CFS (Intercepted) Qc= /S 3 - /3. Z = 2 / CFS(Carryover) Tv L /e 3 • C. B. # 3 4, //00� 26 84-6 / CURB OPENING ( Intcrccption ) Given: (a) discharge Q J = 25/0 CFS (b) street slope S = D, d/8 0 fl (c) curb type "A -2" "D" g a Gf ¢ a��p,, (d) half street width = 'Lb ft. 9-77 Solution: -' 9 Q /S�z= It ) /2 = Therefore y=_ Q / L = L = ZS 8 / 4. G/ = 42,21 (L for total interception) - TRY: L = Z / • ft. • lL /12.21 =1 1 a/y = .33/ & = D•SZI QJ Q X Z5. = /7 CFS (Intercepted) Qc= 2Sf) . - /7,.5 = 1 CFS(Carryover) 72 Cid S1 • < 15 - 4. - c.-45 3 47 3y f 2, / 3 #voitoe,06 y c. c.o Zs 4e 4- C. B. # #00e 2/ 6 / CURB OPENING ( Interception ) Given: (a) discharge Q z01 = /Z, 4 CFS (b) street slope S = O,0 /S '1' (c) curb type "A -2" "D" 8 n � " * (d) half street width ft. Solution: — y. 3 9,3 3 '/ 2 Q /S l( ) = Therefore y=1 Q / L = 6, 49 L _ /2.4 /A 4 = 0:31 (L for total interception) TRY: L. / 4-' ft. • tIL = /¢ / =1 A5.51 a/y = . 33 / 0.52 - [AO SIQ = Ido,g Q Ibg X /2/4- _ /' % CFS (Intercepted) Qc. /21 ¢ . - ¢ = d•0 CFS(Carryover) 1a 4# 9 • 4;t? / / -o //JO//2°444 y • N Y r i ��� , �� - MADOLE & ASSO t .;,,rar -- ' ~a~� CIVIL ENGINEERS AND PLANNER � � _ ' BY DATE CLIENT SHEET NO. ' OF CHECKED DATE JOB JOB NO. - ' . ,4r aft/..s 0,e1S/ • aC _A:4 — ,- / / --- -- ' - - - - -'----' --'- -. . - ,`, ,1 �«��^ � ' �«�� ' .~= `-�=^�-_--____'_--' . ,__+-____- __ . 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' -- ._ / ` - . - �_' -- - - - . --. --___ - _. _ i -'- ' ----- { ' i ' �- -- - — '--' ' _ _ _ i_ _ _ _ _ - ' _ _L-'_- - ----- - - • � '- - / i U -_ -_- ---'----'- - �� - ' - ' ' 1 ..- |' - 11�� i � ���� ��w� . . . .. - . . . - - . . ' = Detention Basin Desirm Criteria for San Bernardino county page 2 A II. Basin Capacity and Outlet Drain A. When a basin (regional, local., temporary or joint use) is to be used to mitigate downstream impacts due to increased flows generated by a develoExnent, the basin capacity and outlet size shall be such that the post - development peak flow rate generated by the site shall be less than or equal to 90% of the pre -- development peak flow rate from the site for all frequency storms up to and including 100 -year (i.e.) the peak 2 year post - development flow rate is equal to or less that 90% of the peak 2 year pre-development flow rate from the site and etc. for all frequency storm events through 100 year). 1. Only 2, 10, 25 and 100 -year storms need to be analyzed. 2. Post - development peak flow rates shall be calculated in accordance with the "San Bernardino County Hydrology Manual ". • 3. Pre - development peak flow rates shall be calculated in accordance with the "San Bernardino County Hydrology Manual" with the following exceptions. a) 10 -year peak flow rates shall be calculated using 5 -year rainfall. b) 25 -year peak flow rates shall be calculated using 10 -year rainfall. c) 100 -year peak flow rates shall be calculated using 25 -year rainfall and Ate -II. • • 4. Additional studies shall be submitted where there exists more than one basin in the drainage area under review. The studies shall address the timing of the peak flow rates from the basins to ensure downstream flow rates are not increased.