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CT 81-19; MARY Y MONTANAS; DRAINAGE STUDY; 1986-05-07
, *"'" M'Af( Y MONTANA'" O~JNA{\t; ~1&Jt?Y , • . AREA···100 1<;-~t'" i-J 1-../ 'g'-' p;.ev. t; /7/810 ' .. . ~/'"" . ':; , ~~---~-~--------'------:'--------":""'------- , ) , ._. _______________ ~. ______________ ._~_~a ___ ._ .. _.n _____________________ ~---. "RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE Re'e~ence-SAN DIEGO COUNTY FLOOD CONTROL DISTRICT 1991 HYOROLOGY MANUAL , " . ------------------------~------... -... --.-~-~.-----.---~---~.-~~---~-------- «««««««««««««««<~«««»?»»»»»»)»»»»»»»»»»» (C) Copyright 1992 Advanced Engineering Software [AESl RICK ENGINEERING" COMPANY ) «««««««««««««««««««»»»»~»»»>»»»»»»»»»)) . : : ------------------------------------------------------~--------------------- USER S~ECIFIED HYDROLOGY"ANO' HYDRAOLIC MODEL" INFORMATION- " '. '. -'------------------~~---------------------------~----------------------------~ USER SPECI~IED STORM EVENTCYEAR) -50.00 SPECIFIED MINIMUM PIPE SIZE(INCH) ." 19.00 SPECIFIED PERCE~JT OF 6R~OIENtS'(,OECIMAL) ~ TO LISE FOR FRICTION SLOPE -.90 RAINFALL-!NTENSITYADJUSTMENT FACTOR -1~000 NUMBER OF [TIME,INTENSItVi DATA PAIRS -10 1) 5.000; 6.060 2 ) 10.000: 3.98'0 5) 6 ) 7) g, 9) 1 I 1111""'· .... .,WWI 13.000:; 14.000: 15.000; 16.000; 18.000; ?rit ",,,,,,,. ....... wwwt 3.640 3.150' :?270 3.120 2.980 2.860 2.653 2.178 SAN D+EGO HYDROLOGY MANUAL "Ci'-IJALUES USED .. «««««««««««««««««««»»»»»»»»»»»»»»»»»»» Advanced Engi~eering Software [AES] SERIAL No. A0127A REV. 2.0 RELEASE DATE' 10!01!92 ««««««««««««««««(~««»»»»»»»»»»»»»»»»»»» ~~~~~~~~~~~~~~~~~~~~~~~~~~~4~44~44~~4~~4.44444~4444~~4~44~~~~~4~~4~~4~~~.444 FLOW PROCESS FRO~ NOD~ 101.10 TO NODE 101.20 IS CODE -~ ------------------------------------------~-------~-------------------~-----»»)RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< SOlL CLASSIFICATION IS "0" SINGLE FAMILY DEVELOPMENT RUNOFFCOEFFICIENT - INITIAL SUBAREA FLOW-LENGTHCFEET) ~ UPSTREAM ELE~AT!ON • 310.00 DOWNSTREAM ELEVATION - . 338.60 ELEVATION DIFFERENCE • 1.10 1~0.00 .5500 / ~ .. • .. 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I --FLQloJ PROCESS FROM NOO-E 101.30 TO NODE 101.00 IS COOE • a ---------------------------------------------------~---------------------~--»»)ADDITION OF SUBAREA'T-O MAINLINE PEA!< FLOl;J««<' 4. ,,'" • __________ s. ____ •• _________ • ___ a _________ •••••• ~----•• _~-----=--__ E---__ --- c:m· VI:'1!.j:) R"TNI:'AI·' -TMTI:'Ms'TTYY'I~'r'l-I/l-Inuq ,--~ 8Qm _w ,_nit f n •.• '1 __ .'''I'_'-'/; ~ ,,"WI't It.., I , W. w_ SOIL CLASSIFICATION IS "0" S'INGLE FAMILY DEVELOPMENT RU~H)FFCOEFFICrE~lT -.5500 tUBAREA AREACACRES)· 1.1~ SU~AREA ~UNOFF(CF~) -? ~c: .... _w TOt-AL AREACAtRES) -1.10 TOTAL RUNOFFCCFS) -? ~c: .... _- TCCMIN)· 10.00 FLm·J PROqESS FROM ,.lODE 101. 00 TO 'l!ODE -, .' . 101.00 IS CODE ... 1 --------~----------~----------------~---------~-----------~--------------~--»»>DESIGNAT'E INDEPENDENT STREAM FOR CONFLUENCE««< -»>>>AND COMPUTE IJARIOlJS CONFLUENCED STREAM I.'ALUES«-«< ~ -. ~ . -. , , .' -_____ • _____ • ________ .. ____ = _______ ' ____ ~---_a .. ___ .. --JII!I-~ _________ =-:'_.a_C _______ _ CON~LUENC~ VALUES USED FOR INDE~ENbENT-STREAM" TIME OF CONCENTRATIONCMINUTES)· 10.00 RAINFALL INTENSITY (INCH~/HOUR) -3.89 To.TAL STREAM AREA "( ACRES)· 1. 1 ¢ TOTAL STREAM RUNOFF(GFS) ~T CONFLuENCE .. . . CONFLUENCE INFORMATION· STREAM RUNOFF TIME NUMBER <CFS) . (MIN. ) INTENStTY (INCH/HOUR) ? At)I:'· ..... 'u._ --~------~------------------------------------~---------------~------------- 1 2 2.38 -2.35 12 .• ee 10.00 3.291 3.880 'RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO FORMULA USED FOR 2 STREAMS. VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLL.Ol·JS· 1.37 1.36 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS· RUNOFFCCFS) ... 1.37 TIME(MINUTES) ... 12'.e82 TOTAL AREACACRES) -2.10 FLOW PROCESS FROM NODE 101.00 TO NODE 100.20 IS COOE -3 -~-----------------~----.---------~------~----~------------------~-----------»»>COMPUTE PIPEFLO~ TRAVELTIME THRU SUBAREA««< »»>USING COMPUTER-ESTIMATED P1PESIZE (NON-PRESSURE FLOW)««< ESTIMATED PIPE DIAMETER(INCH) INCREASED TO 18,00 DEPTH OF FLOW IN 18.0 INCH PIPE fS PIPEFLOW VELOCITi(FEET/SEC.) .-12.1 UPSTREAM NODE ELEVATION -319.00 DOWNSTREAM NODE ELEVATION -301.10 1.5 INCHES FLOWLENGTHCFEET) -157.00 MANNINGS N -.013 ESTIMATED PIPE DIAMETER(INCH) - PIPEFLOW TRRU SUBAREACCFS) K 19.00 1.37 NUMBER OF PIPES ... TRAVEL TIMECMIN.) -.22 TCCMIN.) -13".10 1 , . , FLOW PROCESS FROM NODE 100.20 TO NODE 1111111 7111 rc: I"'nn~ _ • __ ._ ...... \of '"''''' __ , 1 , , ----------------.:..--------------------------------.... -~---------------_._-------- »»)DESIGNATE INDEPENDENT ~TREAM FOR CoNFLUENCE««< .. __ ._. __ . ____ . _____ . ___ . ____ ~----.-------a-.. --.. --.-._. __ ~_--_.---_-----~_. CDNFLUENCE VALUES USED FOR ~NDEPENDENT STREAM 1 ARE- TIME OF CoNCENTRATIoN('MINUTES) -13.10 RAINFALL INTENSITY CINCH.!HoUR)·' 3.25 TOTAL STREAM AREA (ACRES) -Z.~0 TOTAL STREAM' RUNOFF( CPS)' AT CONFLUENCE - FLOl·} PROCESS FROM NODE 100.10 TO NODE 100.20 IS 'CODE -:2 '-------~-----------------------------------------------------------------------»»)RATIoNAL METHOD INITIAL'~UeAREA ANALY5!S««< .. ___ . ______ .~--.--.---~_-.--u-.--.----.---------_----________ c _____ x ______ • *USER SPECIFI~DCSUBAREA'- SINGLE FAMILY DEIJELOPMENT RUNoFFCoEFFICIENT -. .5500 INITIAL SUBA~EA FLoW-LENGTHCFEETj -~50.00 UPSTREAM ELEVATION • 338~00 DOlmSTRE'AM ELEVATION -308.00 ELEVATION DIFFERENCE • 30.00 . , URBAN SUBAREA OVERLAND TIME OF FLoWCMINUTES) - *CAUTIoN-SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH DEFINITION. EXTRAPoLATIo~l OF NOMOGRAPH USED. 50 YEAR RAINFALL INTENSITYCINCH/HoUR) -2.722 SUBAREA AUNOFF(CFS) -1.80 TOTAL AREACACRES) -1.20 TOTAL RUNOFP(CFS) - 17 ':l:?Q . ---.., FLOW PROCESS FROM NODE 100.20 TO NODE 100.20 IS CODE -1 -------~--------------------~------------~-~----~------------------~--------, , »»>DESI6NATE INDEPENDENT STREAM FOR CONFLUENCE««< >>>>>AND'CoMPUTE VARIOUS CONFLUENCED STREAM VALUES««< CONFLUENCE VALUES USED FOR INDEPENDENT STR~AM 2 fiRE- TIME OF CONCENTRATIoNCMINUTES)· 17.33 RAINFALL INTENSITY (INCH.!HoUR) -2.72 TOTAL STREAM AREA C AC,RES) -1.20 TOTAL STREAM RUNoFF(CFS) AT CONFLUENCE -1.80 CONFLUENCE INFORMATION- STREAM RUNOFF TIME NUMBER C CFS) C MIN. ) INTENSITY (INCH/HOUR) ---------------------------------~------.-------------.... ---------------------- 1 ~ .37 13.10 ':I: ?t:t: -."""-- 2 1.80 17 ~':I: .. , .ww 2.722 RAINFALL INTENSITY AND TIME OF CONCENtRATION RATIO FORMULA USED FOR 2 STREAMS. VARIOUS CoNFLUENCED RUNOFF VALUES ARE AS FOLLOWS- 5.87 5.15 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS- RUNoFF(CFS) • 5.87 TIMECMINUTES) -13.088 TOTAL AREA(ACRES) -3.60 FLOW PROCESS FROri NOD~ 100.20 TO, NODE 100.00 IS CODE • ---------------------------------------------~---------------------~~-------»»>COMPUTE PIPEFI,.Ol\1 TR'AVSLTIME nnw SUBAREA<"<<<:r. »»>USING COMPUTER-ESTIMATED PIPESIZE ,( NON-PRESSURE FLo~n««-( • __ ~ •• * __ •• ~ft._. ____ ~ __ ~---n--~~----~---~.-au .. ~u--.. -_~.N~ __ ~ __ • ____ ~ __ U~R~· DEPTH OF ~LOW IN 18.0 INCH PIPg IS 12.5 !NC~ES PIPEFLOtoS VELOCITY(FEET/SEC. )'.. 11.5, UPSTREAM NODE ELEVATION· 304.70 DOWNSTREAM,NODEELEUATION • '':l:I?I':I! 71?1 ~w_ ~ • w FLOtoJLENGTH(FEET) -198.00, MANNING,SN-.013 ESTIMATED PIP'E DIAMETER( INCH) -18.00' '-'NUMBER OF PIPES -1 PIPEFLm~ THR'U SUBAREA( CFS ) '-'5,. a7 TRAVEL TIME(MIN.) • .74 TC(MIN.) -la.a3- FLOW PROCESS FROM NOD~ 100.00 TO NODE IS0.00 IS CODE -1 -------------------------------------------'!"""--------~-------.-----..... ---------- »»>DESIG~!ATE INDEPE~!OENTSTREAM FOR CONFLUENCE««< ... __ •• _. __ -= ______ ._ •• ______ :a:-=_.1'C_-=_:;;a. ___ .... ___ ~_~._. __ ...... w .••• .; ____________ .ia __ CONFLUENCE 'VALUES USED FOR INDEPENDENT STREAM 1 ARE- TIME OF CONCr::NTRATIP~H M.INUTES) .' 13. a'3 RAINFALL INTENSITY 'CINCH./HOUR) -3.11 TOTAL STRE'AM' AREA (ACRES) -3.60 TOTAL STREAM RUNOFF( CFS) A'T CONFLUENCE • 5.87 FLOM PROCESS FROM NODE 100.30 TO NODE 100.00 IS CPDE • .. 2 ----.. ------------------------------------------~----------------!'-..,;.-----~---... -- »»>RATIONAL MEtHOD 'INITIAL SUBAREA ANALYSIS««< __________ .=_. ____ ~ __ =a._ .. _. __ ._~.-----aa.---c-------__________ ~_-~-------- -USER SPECIFIED{SUBAREA}· SINGLE FAMILY DEVELOPMENT RUNOFFCOEFFICIENT • INITIAL SUBAREA FLOW-LENGTHCFEET) -2a0~00 .5500 UPSTR~AM ELEVATION -335.00 DOWNSTREAM ELEVAtION - ELEVATION DIFFERENCE - 303.70 URBAN SUBAREA OVERLAND TIME OF FLQt.J< MINUTES) - ¥CAUTION" SUBAREA SLOPE EXCEEDS COUNTY NOMOSRAPH DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED. 50 YEAR RAINFALL INTENSITYCINCH/HOUR) -3.033 SUBAREA RUNOFF(CFS) - TOTAL AREACACRES) - 2.17 1.30 TOTAL RUNOFF(CFS> - 14 .622 ? 17 ....... FLOW PROCESS FROM NODE 1.00.00 to NODE 100.00 IS CODE -1 -------------------------------~----------------------·----7----~------------»»>DESI6NATE INDEPENDENT STREAM FOR CONFLUENCE««( CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE" TIME-OF CQNCENTRATIONCM!NUTES) -14.62 RAINFALL INTENSITY (INCH .lHOUR)", TOTAL STREAM AREA (ACRES) -1.30 TOTAL STREAM RUNOFF<CFS) AT CONFLUENCE ~ FLOW PRO~ESS FROM NODE 10,0 . 40 TO NODE 2.17 100.50 IS CODE -,2 . . , .. . . . --------------------------------------~-----------------------------------~-»»)RATIONAL METHOd INtTIA~ SUBAREA ANALYSIS««< SOIL CLASSIFICATION IS "0" SINGLE FAMILY D~VELO~MENT ~UNtiFFCO~FFltIENT -.5500 INITIAL SUBAREA FLOW-LENGTHCFEET) -90.00 U~STREAM ELEVATION • . 332.00 oot'J~JSTREAM ELEVATION -320.2@ ELEIJAHON DIFFE,RENCE • 11. 90 URBAN SUBAREA OIJ~RLAND TIME OF FLOWCMINUTES) • 9.204 "'CAUTION ~ SUBAREA_ SLOPE EXCEEDS COUNTY.'·:f'JOMOGJ~APH DEFINIT!ON. EXTRAPOLATtON OF NOMOGRAPH USED. 50 YEAR RAINFALL. INTENSITYCINCH/HOUR) -4.SS3 SUBAREA RUNOFFCCFS) -.56 TOTAL AR!:A( ACRES) -_.22 . TOTAL RUNOFF( CFS) • .55 FLOW PROCESS FROM NODE 100.50 TO NODE 100~00 ts CODE - 5 . '. . -. --------------------------------------------------------------~-~----------- »»>COMPUTE STREETFLmoJ·TR~vt:LT!ME THRU'SUBA'REA««< UPSTREAM ELEVATION -32~.10 DO~NStREAM ELE0ATION -':l:17t':l: I7tI7t www. ww STREET LENSTH(FEET)'· 295.00 CURB HEIGTHCINCHES) -5. STREET HALF~J!b.Tfh FEET> -27.00 stREET CROSSFALL< DECIMAL> -.0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF - 1 . nTR:WELTtME COMPUTED USING MEAN FLmHCFS) • STREET FLmiJDEPTH(FEET>· -.. 18 HALFSTREET. FLOOmJIDT!H FEET)· 2.70 AVt:RAGE FLm! VELOCITY( FEET /SEC.) -4.03 PRODUCT OF DEPTHIVELOCITY·· STREETFLOW TRAVELTIMECMIN) a 1.22 .73 TC<MIN) • 50 YEAR RAINFALL INTENSITY(INCH/HOUA)·· 4.132 SOJL CLASSIFICATION IS "0" 9.12 SINGLE FAMILY DEVELOPMENT RUNOFFCOEFFICIENT -.5~00 .77 SUBAREA AREACACRES) m .19 SU8AREA RUNOFFCCFS) -.~1 SUMMED AREACACRES) -.10 TOTAL RUNOFF(CFS) -.97 END OF SUBAREA STREETFLm·} HYDRAULICS' DEPTHCFEET) -.20 ~ALFSTREET FLOODWIDTH(FEET) ~ 3.19 FLOW VELOCITY(FEET/SEC.' -1.05 DEPTH~VELOCITY -.79 FLm·! PROCESS F.ROM NODE 100.00 TO NODE 100.00 IS CODE -1 ------------------------------------------------------~--------------------- »»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< »»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««( ____________ Z ___ " __ =-___ = __ .. __ ... __ ....... ___ I!1 ___ .:s. _____ ,. ____________ ... a _______ _ CONFLUENCE VALUES USED FOR INDEPENDENT STREAM tARE' TIME OF CONCENTR~TION(MINUTES) -9.12 RAINFALL INTENSITY !INCH.lHOUR) -1.13 TOTAL STREAM AREA (ACRES) -.40 TOTAL STREAM RUNOFFCCFS) At CONFLUENCE -.97 . CONFLUENCE INFORMATION' STREAM RUNOFF NUMBER ( CFS ) TIME INTENSITY (MIN.) CINCH/HOUR) ------------~--------------------------~------------------~----------------- 1 13.83 3.115 . , . \ 2 3 2.17 .97 14.62 9.42 3.033 1.132 RAINFALL· INTENSITY AND TIME OF CONCENTR.ATION RATIO FORMULA vSED FOR 3 SlREAMS~· 'JARrOUS CONFLUENCED RUNOFF tJALU.ES ARE. f:\S· FOLL.m~s· 9.70 a.51 7.03 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS' ·RUNOFFCCFS) -8.70 TIME(MINUTES)· 13.835 TOTAL AREAtACRES) ~ 5.3~ .'. FLOW PROC~SS FROM NODE 100.00 TO ·NODE t00~10 IS COD~ -6 -----------------------------~-----------------------------------------~--.-»»)COMPUTE STREETFLb~ TRAVE~TI~E THRU SUBAREA««< • ___ • __________ *' ... __ ., _____ in.;, ... ______ ., ••• ____ ' ..... _____ .. ___ .. ~-_-... 111!"-----..... _-_--~-.- UPSTREAM ELEVAtION - ~TREET LENGTHCFEET'·. DmJNS TREA·M ELEVA T! ON -302.90 . 1.00 STREET HALFWIDTHCFEET~·-27.00 CURB HEI6THCtNCHES) • 6. STREET CROSSFALL(DECIMAL) - SPECIFIED NUMBER OF HALFSTREETS eARRYt~JG RUNOFF -1 4~TRAVELTIME COMPUTEcr USING MEAN FLOWCCFS) -9.70 STREET FLm'1DEPTHtFEET) -.31 HALFSTREET FLOODWIDTHCFEET) -·1 •• 65 AVERAGE FLOW VELOCITYCFEET/SEC.) -6.93 PRODUCT OF DEPTH&VELOCITY· 2.35 STREETFLmr TRAVELTIMECMHO -~00 TCCM!N) -13.tH· 50 YEAR RAINFALL INTENSITYCINCH/HOUR) -3.114 SOIL CLASSIF!CAT!ON IS "D" SINGLE FAMILY DEVELOPMENT RUNOFF-COEFFICIENT -. .5500 SUBAREA AREA<ACRES) - SUMMED AREACACRES) - 0.00 SUBAREA RUNOFFf,CFS) • 5.30 TOtAL RUNOFFCCFSJ - 0.00 9.70 END OF SUBAREA STREETFLOW HYDRAULICS' DEPTHC FEET) -.31 HALFSTREET FLOODtoJIDTH( FEET) -10.65 FLO!,} VELOCITY( FEET/SEC.) - . 6. 93 DEPTH~VELOC!TY .• 2.35 FLOW PROCESS FROM NODE 100.50 TO NODE 100.70 IS CODE - ----------------------------~-----------------------~--~-----------~~-------»»)RATIONAL METHOD INITIAL SUBAREA .ANALYSIS««< SOIL CLASSIFICATION IS "0" SINGLE FAMILY DEtJELOPMENT RUNOFFCOEFFICIENT - INITIAL SUBAR!:A FLOt~-LENGTH(FEET)· 100.00 .5500 UPSTREAM ELEVATION -322.00 DDt·JNSTREAM ELEVATION- ELEVATION DIFFERENCE -1.60 URBAN SUBAREA OlJERLAND TIME OF FLOl·J( MINUTES) - 50 YEAR RA!NFA~L INTENSITY(INCH/HOUR) -4.411 SUBAREA RUNOFF(CFS) -1.89 TOTAL AREACACRES) • .79 TOTAL RUNOFF(CF.S) - 8.792 FLOloJ PRO·CESS FROM NODE 100.70 TO ~!OD~ 100.80 IS C09E :-5 ---------------~---~-------------------~--------~------~------.--------------»»)COMPUTE STREETFLOW TRAOELTIME THRU SUBAAEA««< UPSTREAM ELEIJATrON • 320'.10 DQt'JNSTREAM ELEIJATION • 303.50 STREETLENGTH(FEET). 285.00 CURB HEIGTH(INC~ES) • a. STREET HALFWIDTH~FEET) • 27.00 STREET CROSSFALLCDECIMAL) • .0200 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF· 1 ...... TRAIJELTIME COMPUTED USINe MEAN FLot-HCFS·) -2.09 STREET FLOWDEPTHCFEET) -.21 HALFSTREET FLOODWIDTHCFEET) -5.8e AIJERAGE FLOW IJELOCITY(FEET/SEC.) -~.50 PRODUCT OF DEPTH&UELOCITY -1.10 STREETFLOW TRAUELTIME(MIN)· 1.05 TCCMIN)· 9.91 50 YEAR RAINFALL INTENSITYCINCH/HOUR)· 3.951 SOIL CLASSIFICATION IS "0" SINGLE FAMILY D~VELOPMENT RUNOFFCOEFF!CIENT -.55.0 SUBAREA AREACACRES) ~ .19 SUBAREA RUNOFFCCFS) • ~Q .ww SUMMED AREAC ACRES) • " .96 TOTAL RUNOFF! CFS) -2.28 END OF SUBAREA STREETFLQt·J HYDRAULICS' DEPTHCFEET). .25 HALFSTREET FLOODWIDTHCFEET)· S.S8 FLOW IJELOC!TYCFEET/SEC.) -4.05 DEPTH¥UELOCITY -1.05 _______________ .c_. ___ .ft_._ •. ____ .. _. ___ . ______ ~------_________ a ______ .. __ .~ END OF RATIONAL METHOD ANALYSIS . . A' R.E·.A 200 " . . ,'. .~. ,.. i.~ '1"1.., .• Il(:;.", V: / .. / :oJ l' i1e:\l. <1/ ~ C~ It: t'f:\l -;, /1/ B~ . , . , ,. ~. A ec.A 1..00 ._.-._._-----------------------------------------------------~--.-.--------- RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE Re'~r~~d~" SAN DIEGO COUNTY FLOOD CONtROL DISTRICT 1S81 HYDROLOGY MANUAL .-.-.--.-.-----.-•. ----.----.-.---.--~-------.. -I\II-----.. --.---.. -........ -------- .«««~««««««~««««««~««<»»»»»»»>)~»»»»»»»»»») '. CC) Copyright 1982 Pidv:mc~d En~in~erin~ SoHwer~ [AES) RICK ENGINEERING COMPANY «««««««««««««««««««»»»»»»»»»»»»»»»»»»» ------------------------------~------------------------------~------~-------USER SPEqFIED HYDROLD·SY AND HYDRAULI~ MODEL INFORMATION" ------------------------_ .... _-------_ ... ---_._-----------.--'!'---------------_ ..... _---- USER SPECIFIED STORM EVENT~YEAR) -50.00 SPECIFIED MINIMUM PIPE SIZECINCH) -1~.00 SPECIFIED PERCENT OF GRADIENTSCDECIMAL) TO 0~E FOR FRICTION SLOPE - RAINFALL-IN'TEN~!TY ADJUSTMENT FACTOR ,-1.000 NUMBER OF [TIME,INTENSITYl 1) 5.000: 5.050 2 ) 10.000; '::t QQf'l\ "".wwv 3) 11.000: 3.510 4) 12.000.: 3.150 5) 1'::t f'l\0I0I· ._ ..... ww, 3.270 5) H .000; 3.120 7) 15.000: ? ClAOI .... ""w_ ·8 ) 16.000: 2.850 9,) 18.000; 2.550 10 ) 20.000: 2.1190 SAN DIE60 HYDROLOGY MANUAL DATA PAIRS -10 ·C"-I.'ALUES USED .90 «««««««««««««««««««»»»»»»»»»»»»»»»»))»» Advanc~d Engineering So,twere [AEg] SERIAL No. A0127A REV. 2.0 RELEASE DATE"10!01!82 ««««««««««««««««<~««»»»»»»»»»»»»»»»»»»» ** •• 4* ••• 4*44.**4444.444444.444444.4.44 •• 44.4*4***44444 •• 4 •• 44 ••••• 4 •• 444444 FLOl·,1 PROCESS FROr-J NODE 211.10 TO NODE 211.00 IS CODE -2 ----------------------------------------------------------------------------, . »»)RATIONAL METHOD INITtAL SUBAREA ANALYSIS««< -----------=*--------_ .. ----_ .... __ ._--_ .. ----------------_._--------------- SOIL CLASSIFICATION IS "D" SINGLE FAMILY DEVELOPMENT RUNOFFCOEFFICIENT - IN1TIAL'SUBAREA FLOW-LENGTH(FEET) -250.00 UPStREAM ELEVATION -329.20 DOWNSTREAM ELEVATION G 322.80 ELEVATION DIFFERENCE -.6.40 .5500 ,\ \ IIf:>RAM SUBAREA OI~~ERt-ANDTIME':OF F!,..OloHM"INUTES) -It.9·n!' *CAUTioN" SUBAREA SLOPE'EXCEEDS tOUNTY NOMOGRAPH DEFINITION.' EXTRAPOLATION 9F NOMOGRAPH USED. 50 YEAR RA!NFALL INTENSITYCINCHlHOUR) -3.279 SUBAREA RU~lOFFC CF?'> • -' 1.'80 TOtAL AREACACRES) -1.00 ~d~AL:RUNOFF(CFS) -1.B0 FLOl·J PROCES'S FROM NODE 211.00 TO NODE 212.00 1£ tOOl:: -:3 --,;:,--:,,~-----------------..... -----;"--------~-~'-':"'----';" .... -----------------,;...---"!'--...;.-._-- »»>COMPU'rE P!PEFLO~J 'rRfWELTIME; THRU SUBAREA««< >>> »USING COMPUTER:"ESTIMATE'O" P!PESIZE C NO'N-PREssURE'-FLOl.n««<. --', f • ... ___ .. ___ ....•.. __ .s ____ ...... __ .............. _____ .......... _____ .. _____ _ ESTIMATED PIPE DIAMETERC INCH f !NCREASED TO '18.00 DEPTH OF FLOW IN 18.0 INc~ PIP~ IS 3.~ INC~ES PIPEFLOW VELOCITYCFEETlSEC.) -7.9 UPStREAM NODE EL~0ATt6N -314 .• ~ DOWNSTREAM N06k'~LEVATION -305~00 FLOWLENGTH(FEET>· 150.00 MANNINGS N· -.0.~3 ESTIMATED -P:ZPE ,OtAMETERC'INCH)· '18 ~'00 'NUMBER 'OF -PIPES ·P!PEFL'Q\tJ Tf1RI4 SUeAREA( OF'S) .. . ~. 90 TRAVEL TIMEcfltN.1 -.3~ , 'TCCMtN.) -13~29 *_*4*4.44*4***.**************************************************4~**44***** .. . FLOW PROCESS FROM ~ODE 212.10 IS CODE - , ~ ~'------------------------------------------------------~----------------------- ______ .. __ . _____ .~a ..... -m.-~---.~-.---.---------~---____ ~_~._--_--.-----~-- CONFLUENCE VALUES 'USED -FOR INOEPENOENTlSTREAM 1 ~RE' -TIME 'OF CONCENTRATIONCM!NUTES,' -,13.29 RAINFALL INTENSiTY '(1NCH./HOUR)· 3.23 TOTAL STREAM AREA (ACRES) -1.00 TOTAL STREAM RUNOFF(CFS) AT eONFLUENCE -1.80 FLOloJ PROCESS FROM NODE 212.10 TO NODE 212.20 IS CODE -2 ------------------~------------------------~--------------------------------»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< ----------------------_ ... _-... ----... _ .........•.. -------------------------SOIL CLASSIFICATION IS "0" SINGLE FAMILY DEVELOPMENT RUNOFFCOEFFICIENT • INITIAL SUBAREA FLOW-LENGTH(FEET) -140.00 UPSTREAM ELEVATION -318.78 DOWNSTREAM ELEVATION -317.30 ELEVATION OrFFEAENCE -1.40 URBAN SUBAREA OVERLAND TIME OF FLOloJ< MINUTES) - 50 YEAR RAINFALL INTENSITY(INCH/HDUR)· 3.50~ .29 .5500 11. 715 SUBAREA RUNOFFCC~S) • TOTAL AREACACRES) -.15 TOTAL RUNOFF(CFS) - FLOloJ PROCESS FROM NODE 212.20 TO NODE -212.00 IS CODE - "Q ....... "" 6 -----------------------------~----------------------------------------------»»)CDMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««< ~-------------------------------------~----~--------.--------------.~-----~-UPSTREAM ELEVATION -311.30 DOWNSTREAM ELEVATION ~ 31'2.80 }O , . STR~ET LENGTH(FEET> -S0.ee CUR£3 HE!GTH(!NCHES) -e. STREET H~LFW!DTH~FEET) -11.e0 STREET CRoSSFALLCDECIMAL) -.0200 SPECIFIEO NUMBER OF HALFStREETS CARRYING RUNOFF -1 ~~TRAVELT!ME COMPUTED USING MEAN FLOW(CFS) -.76 STREET FLOWDEPtH(FEET) -~2e HALFSTREET FLooOt,t!DTH·< FE"ET) -3.92 fWE~AGE FLDt-.1 ,VELOCrTVCFEETlSEC.) -2.Bl PRODUCT OF DEPTH&VELOCITY - STREETFLDt-J TR/WEL TIMEe MIN) -.3e TCeMIN) -12.el se YEAR RAINFALL INTENSITYHNCHiHOU,R) "'!. 3. H8 SOIL CLASSIFICATION IS ~O~ S!~l6LE FAMILY DEVELOPME'N"T RUNOFFCOEFFICIENT -: .55e0 SUBAREA AREAe ACRES) -.5e ,SUBAREA RUNOFFC CFS) - SUMMED AREA ( ACRES) • .65 TOTAL RU~!O,Ft= { CFS ) _- END OF SUaAREA STRE:ETFLDt-J HYDRAULICS' .95 1 ?A .... -, DEPTHCFEET> -.21 HALFSTREET FLOODWWTH(FEET> FLOW UELOClTY(FEET/SEC.)· 2.e8 DEPTH~UELOCITY· 5.85 .65 " . ~4~~~4~~444.44~4¥~¥¥¥¥4¥4~~4~~44*~.~4444~~44~444~~~4~4~44~*44~~44444444¥4444 PLm~ PROCESS FROM NODE 212.00 TO NODE 214.00 IS ·CODE· 1 ------------------------------~--------------~--------------------~---------»»)DESI6NATE INDEPENDENt STREAM FOR CONFLUENCE««< »'»>AND COMPUTE VARIOUS' CONFLOENCE!) STREAM 'I.'ALUES«<"« , " --------------_ .. _-----------------------------------------'-.. ~.-.. -.--.-.--. CONFLUENCE VALUES USED FOR njDEPENOE~iT 'STREAM 2 ARE' TIME OF CONCENTRATION(MINUTES) -12.el RAINFALL INTENSITY CINCH./HOUR)'~ 3.~5 TOTAL STR~AM AREA (ACRES) -.SS TOTAL STREAM RUNOFF(CFS) At CONFLUENCE • 1.21 CONFLUENCE INFORMATION' STREAM RUNOF~ TIME INTENSITY NUMBER CCFS} (MIN.) (INCH/HOUR) 1 2 1. 80 1.21 13.29 1? 1711 ... _.w,:,- 3.227 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO FORMULA USED FOR 2 STREAMS. VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS' 2.95 ? Q~ COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLmJS' RUNOFFCCFS) -2.95 TIMECMINUTES) -13.295 TOTAL AREA(ACRES) -1.SS " 4~4444¥444444444444.44.4.444444¥.444444*4444~44¥44444444¥44444444.44444.4444 FLOW PROCESS FROM NODE 212.00 TO NODE 213.00 IS CODE ~ 3 ---~------------------------------------------------------------------------»»)COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««< »»>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLDt-n««< _._._. __ • ______ ~ _________ c _____ ~ _______ ~----_--•• _ •• -. __ ~_-_--_---.--._---~- ESTIMATED PIPE OIAMETER<!NCH) INCREASED TO 18.00 DEPTH OF FLOW IN 18.0 INCH PIPE IS 3~2 INCHES PIPEFLOW UELOCITYC~EET/SEC.' -13.7 UPSTREAM NODE ELEVATION,-305.00 DOWNSTREAM NODE ELEVATION ~ FLOWLEN6THCFEET) -155.01 275.00 MANNlNGS N -.013 /1 ~ - .. I • .. I I >t , .. • .. I • .. I • .. ' I ' .. • .. I • .... 'I • .. I .. • .. I • ' .. I • at I .. • .. 'I • .. I • .. I .. • .. I • .. I I .. I, .. ,I .. I • .. I 1 .. I .. • .. I • .. I, .. , .. • at I • .. I .. I .. • .. 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(J) Q: '0: L1J ct: ll. ct:I.I.J ... ... ct: 0: _I . ..;., 1:1: (,I) ct: ;;:: I.1J <1: cr. t.l UJ ~. ... ::::: =. <1: >. 1.11 ":1 ... (,IJ ::; UJ Q] 0:_1 _I Ul ::::: n. 0 ..;.1 0: 15) ct: cr. "';;::1-:'.=1 OUI =IU101 ... Cl.... .' =1 C) (,II (,I) (,II ... , '. FLm-J PROCESS FROM NODE 208.2~ ~O NODE 20d.0e IS CODE -6 , , ' ----------------------------------------------------------------------------. »»)COMPUT~ STREETFLOW TRAVELTIME THRU SU8AREA~«« . . _-----------------_ ... ----...... -_ ............... -------_._--._._-... ------ UPSTREAM ELEVAtION -333.4~ DOWNStREAM ELEVATION -252.00 STREET LE~!GTH{ FEET)' - ' 1100 ~ 00, CUR8 ,HEIGTH( INCHES) -6. STREET HALFt~IIDTH(FEET> -20.0e S'TREET'CROSSFALL(OEC!MAL)· .0200 SPECI~IED NUMBER OF HALFSTREETS ,CARRYING RUNOFF ~ 1 uTRAVELTIME C,OMPUTEDUS!NG ,MEAN FLO-l·J(£FS) -3.95 STREET FLmJDEPTH(FEET) ~" .28 HALFSTREET FLOOD',HDTH! FE'ET) '.; 7.57 AVERAGE FLmJ VELO,CITY(FEET/SEC. )' -5.58 1 C:C: ... w.w PRODUCT OF DEPTH&VELOCITY ~ STREETFLo~ TRAVELTIMECMtN) -3~2a TCCMIN) -15.83 50 YEAR RAINFALL INTENSITYCINCH/HOUR) -2.880 SOIL 'CLASSIFICATION IS "0" SINGLE FAMILY DEVELOPMENt RUNOFFCOEFFICIENT • .5500 SUBAREA AREA! ACRES) --~. ~0 SUBAREA RUNOFFCCFS) '. SUMMED AREA(ACRES) -if.6~' TOTAL RUNOFF(CFS) - END OF SUBAREA STREETFLmr HYDRAUL~CS -" bEPTH(FEEt) -.3~ HALFSTREET FLOODWIDTH(PEET) • 10.~S 6.97 7.3" FLoW'VELOCITYCFEET/SEC.' -~.05 DEPTH"VELoCITY -2.03 FLOW PROCESS FROM NODE i0a.00 TO NODE 208.00 ,IS COD~ -1 --------~-----------------------------------------------------------------~-»»)DESIGNATE INDEPENDENT STREAM ~bR CONFLUENCE««< »»>AND COMPUTE VARIOUS CONFLU~NCED ~TREAM VALUES««< CONFLUENCE IJALUESUSED FOR INDEPENDENT STREAM 3 ARE:, TIME OF CQNCENTRATIONCMINUTES) ~ 15.83 RAINFALL INTENSITY CINeH./HOUR) -2.B8 TOTAL STREAM AREA (ACRES) -~.50 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE .' \ CONFLUENCE INFORMATION- ST~EAM RUNOFF' TIME I~HENS,ITY NUMBER (CFS) (MIN.) (!NCH/HOUR~ 7 '::tA, • w • -----------------------~---------~------~----------~--------~-~-~----------- 1 2 3 2.95 1.3~ 7.34 13.8~ 25.83 15.83 3.14-'1 2. ~80 2.880 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO FORMULA USED FOR 3 STREAMS. VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS' 10.7~ 9.99' 11.20 COMPUTED CONFLUE,,{CE ESTIMATES ARE AS FOLLOlo,lS' RUNOFF(CFS) -1~.20 TIME(MINUTES) -15.~32 TOTAL AREA(ACRES) • 7.~5 FLOW PROCESS FROM NODE 208 ,,00 TO NODE 209.00 IS CODE -3 ---------------------------------------------------------------------------- »»>COMPUTE PIPEFLOW TRAV~LTIME THRU SUBAREA««< »> »U5!N6 COMPUTER-ESTIMATE!) PIPESIZE (NOl"!-PRESSURI;: 'F-LOl'/ >-««< If _________________________ ~. __ M _________ •• __ • __ ••• _________ ~--------~-----~-- OEPTH OF F.Lm-J IN 18. e HicH PIPE ts 10,.7 INCHES PIPEFLOW VELocrtvcFEET/SEC.) ~: 10.2 UPSTREAK NODE E~EVATION -212~80 DOl.JNSTREAM NODE ELEVATION -211.50 FLm-!LEN~TH(FEET) '. 15.0e MANNINGS N -.013 ESTIMATED PIPE DIAMETERqNCH)" 1e:.e0 ,NUMeER OF PIPES - 1 PIPEFLOW THRU SUBAREA(CFS'·· ~1.20 TRAVEL TIME( M'HL) -.07 'tC~MIN.) -15.90 " . ' •••••••••• ~* •••••••••••••••••••••••••••••• ~ ••••••••••••••••••••••••••••••••• FLOW PROCESS FROM NODE 209.00 TO NODE 209.e0 IS COOE • 1 ------~-----------~---------------------------------------------------------»»>DESIGNATE I,NDEPE~!DENT STREAM FOR CONFLUENCE««< -------.---.--.---.------.-... ~-.----.-----~--------.----------_.-----------CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE' TIME DF CONCENTRATION(MINUTES) • RAINFALL INTENSITYCINCH./HOURY -2.87 TOTAL STREAM AREA (AcAES)' - . 7.15 TOTAL STREAM RtiNOFF<'C~S) AT CONFLUENCE - FLOW PROCESS FROM NODE 209.10 TO NODE 11.20 zes.20 IS CODE -z -------------------------------------------------~--------.-------""!"':'!,---~ ..... ---- »»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< ,- . , __________ .a ___ c _________ a _______ •• _______ • _________ •• ____ ••• ~-_-_---_--.-~- SOIL CLASSIF!CATION IS "ON SINGLE FAMILY DEVELOPMENT RUNOFFCOEFFICIENT • .5500 INITIAL SUBAREA FLOW-LEN6T~(FEEt> -.01 UPSTREAM ELEVATION -32~.91 DOWNSTREAM ELEVATION -32~.90 ELEVATION DIFFERENCE -.01 URBAN SUBAREA OVERLAND TI.ME OF FLDlHM!NUTES) • .201 4CAUTION' SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED. TIME OF CONCENTRATION ASSUMED AS'5-MINUTES 50 YEAR RAINFALL INTENSITY(INCH/HOUR) -5.050 SUBAREA RUNOFFCCFS) -.0e TOTAL AREACACRES) -.e0 TOTAL RUNOFF(CFS) ~ .00 FLOW PROCESS FROM NODE 209.30 TO NODE 209.00 IS CD9E -9 --------~------------------------~----~------------------------~------------»»>ADDIT!ON OF SUBAREA·TO MAINLINE PEAK FLOW««< ________________ • _____ Ka __ a _________ a ••• _______ • _____ • _____________________ _ 50 YEAR RAINFALL INTENSITY(INCH/HOUR) -54050 SOIL CLASSIFICATION IS ~D~ SINGLE FAMILY DEVELOPMENT RUNOFFCOEf='F!CIENT -.550e SUBAREA AREA(ACR~S) -1.45 SUBAREA RUNOFF(CFS) - TOTAL AREA(ACRES)· 1.15 TOTAL RUNOPFCCFS) -1.93 TC(MIN) -5.00 FLOW PROCESS FROM NODE 209.ze TO NODE 208.e0 IS CODE - ,. ' 5 ----------------------------------------------------------------------------. . »»>COMPUT~ STREETFLOW TRAVELTIME THRU SU~AREA««< It; '. ; ~ ~ '" • • I' I • • ,. w '. ,15) • 15) IS) • IS) N I • ISJ , t', ' Ul' N • '. • _J w ct: r. . ... 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'181100 15.11 ',' ,> ~l -.013 NUM8ER OF' PlPES - TRAVEL·TIMECMIN.' -.12 TC(M!N." -18.02 ~LOW PROCESS FROM NdDE 210.00 TO NODE 210.00 IS CODE • 1 1 ------------------------------------------------------~--~------------------ »»>OESIGNATE INDEPENDENT 'STREAM FOR' C'ONFLUENCE««< ____ .. __ ._ .. _a _____________ ~-'---------.--.. -.. --.. -· ... ~--.. __ ...... _ .... _ ... ____ ~.-.. --- CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE" TIME OF CONCENTRATIONCM!NUTES) -' 16~0Z RAINFALL !NTENS!TY(INCH./HOUR~:·';' 2.85 TOTAL STREAM AREA (ACRES) -9.60 TOTAL STREAM RUNOFFCC~S) AT CONFLUENCE -15.11 ~.~ ~ ~~ ~ .. ~ ~.4-~~ ~ ~~ -If, ~ 4'~~ 4 4.w.~ ~ 4~ 4"", 4~~'",·~",,,,,,,,,, -If, "" ........................................... ~ ......... ~~4-~ ............ ~ ~~ ~.~ ... ~·.i~ ... -.. . . FLOtoJ PROCESS FROM NODE 210.0'0 T.o NODE; 202.00 IS CODE -3 . . ~ ~ --------------------~------------------------------------------------------->>>>>COMPUTE PIPEFLOloJ TRAVEL TIME; THRU 'SLi8ARI;A««< > > > »US ING COMPUTER--EST! MAtEDP IPES IZE <NON-PRESSURE FLO'J}« <<< , . ESTIMATED PIPE DIAMETERCINCH) INCREASED TO 18.00 DEPTH OF FLOW IN 18.0 INCH PIPE IS 7.7 INCHES PIPEFLOW VELOCITYCFEET/SEC.) -21.i UPSTREAM NODE ELEVATION -~~e.10 DOWNSTREAM NODE EL~VATION -'125.80 FLOWLENGTHCFEET) ~ 65.00 MANNINGS N ~ .013 ESTIMATED PIPE DIAMETER(INCH) •. 18.00 NUM8ER OF PIPES -! PIPEFLOW THRU SU8AREACCFS) • 15.11 TRA\,'EL T!ME(M!~!.) -.05 TC<MIN. r -1.6.07 FLOW PROCESS FROM NODE 206.10 TO NODE ?mr::. mm T~ rnm: _ _w_e...,.., 4"'" "".., __ 2 --------------------------------------------"-------------------------~------ »»>RATIONAL METHOD 'INITIAL SU8AREA ANALY~IS««< ____ D ____ a __ ~ ____ . __ ._a ... __ ._. _____ *. _______ ._._._a ________ . _____ ~--------- ~USER SPECIFIEDCSU8AREA)" MULTI-UNITS DEVELOPMENT RUNOFF COEFFICI~NT - INITIAL SU8AREA FLOW-LENGTHCFEET) -510.00 .5500 UPSTREAM ELEVATION -311.70 DOWNSTREAM ELEVATION -292.80 ELEVATION DIFFERENCE -19:90 UR8AN SU8AREA OVERLAND TIME OF FLOW(MINUTES) - "'CAUTION" SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH DEFINITION. EXTRAPOLATION OF NOMOGRAPH US~D. ""CAUTION" SU8AREA FLOWLENGTH EXCEEDS COUNTY 19.~18 NOMOGRAPH DEF~NITION. 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Ul :2: t-i ::) Cl UI ::l Ul m I-.. 0 I ,o. U U)tI)Zall-' .. 0 1 ,o. /'. » (I) UI t-i a. CJ _J til ..... n: ,. _I I ,o, '. ClHct:ClO .. ..J I ,o. ~ .... ::) 0 .. _I I ,o, I ::l ... ::' Cl (.l .. _I I ,o. /'. U W 0 a. ::) CJ U. W ,a. f-.. U. I ,,o. M (.) 1-. a~ .... 1-. .. U. I ,~. .. tJJ Ulf-:t U. 1 ,o, • .. (II til .... 1--.. U. 1 ,~, I .. I • .. 1 .. I • :t I • .. I • .. I .. I I ,. I .,: " , UPSTREAM ELEtJATtON - aTREET LENGtHlFEET) - 334.e0 D{nmS'-TREAMELEVATION" 960.00 'CURB HEI6THCINCHES) -S. STREET HALF~.J!DTHC FEET) ... 27.00 STREET CROSS FALL< DECIMAL> -.,020,0 SPECIFIED N~~eER OF HAL~STAEETS CARRYING RUNOFF· 1 SINGLE' FAMILY'DEIJELOPMENT~UNOFFCO~FFICIENT • .5500 u TRAVEL TIME COMPUTED USING MEf:N FLOl.J< CFS) -' 6. 2,e STREET FLmJDEPTH( FEEt) ... HALFSTREET FLOODt.J!DTH( FEET)' ... -9.97 AVERAGE FLOW IJELOCITY(FEET/SECr' -5.69 PRODUCT OF DEPTH&VELOCITY -1.84 , STREET~LOW TRAVELTIME(MIN) ... 2.82 TC(MIN)'" 12.S7 50 YEAR RAINFALL INTENsITY(lNCHlHOUR) iii 3.330 4USER SPECIFIED( SUBAREA)·' _ , SINGLE FAMILY DEVELOPMENT RUNOFFCOEFFIC'IENT -' .5500 SUBAREA AREACACRES), ;. .82 SUBAREA RUNOFFCCFS'-· 1.50 SUMMED AREA( ACRES' -3.31 TOTAL RUNOFF( CFS) • S. 97' ,-- END OF SUBAREA STREETFLmJ HYDRAULIC?· DEPTHCFEET) ~ .34 HALFSTREET FLOODWIDTHCF5ET) • 10.66 FLOW'V~LOCITY(FEET/SEC. > -5~55 DEPTH~VELOCITY -1.SS. FLOW PROCESS FROM ~ODE 301.90 TO NODE 301. 90 IS CODE - -------------------------------~-----~-~-~----~-----------------------------»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««< _ »»)USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOl~ )««<' .' , , ---------------------------._---------.-----------------------------------_. , ' , ESTIMATED PIPE DIAMETER(INCH' INCREASED TO le~00 DEPTH OF FLm} IN 18.0 INCH P'!PE IS 5.9 INCHES PIPEFLDt·) VELOCITY! FEET/SEC. ,:. 13. e UPSTREAM NODE ELEVATION -' 276.00 271.5~ DOWNSTREAM NODE ELEVATION ... FLOWLENGTH(FEET) -50.00 ESTIMATED PIPE DIAMETER(INCH) MANNINGS N· .013 -18.00 NUMBER OF PIPES - PIPEFLOW THRU SUBAREACCFS) ~ S.97 TRAVEL TIME(M!N. ) -.06 TC(MIN.) -'ll.73 FLOW PROCESS FROM NODE 301.80 TO NODE 205.00 IS CODE - 1 3 -, --------------------------------~----------------~-------~--------------------»»>COMPUTE PIPEFLOW TRAIJELTIME THRU sueAREA«~« »»>USING COMPUTER-ESTIMATED PIPESIZE (NON-pRESSURE FLOW'««< ESTIMATED PIPE DIAMETERCINCH) INCREASED TO .18.00 DEPTH OF FLOW IN 18.0 INCH PIPE IS 10.1 INCHES PIPEFLOW VELOCITYCFEET/SEC.) -S.9 UPSTREAM NODE ELEVATION -271.50 DOWNSTREAM NODE ELEVATION -258.e0 FLOWLENGTHCFEET) -252.0. MANNINGS N -.113 ESTIMATED PIPE DIAMETER(INCH1· 18.00 NUMBER OF PIPES -1 PIPEFLOW THRU 5UBAREA(CFS) '. 6.97 TRAVEL TIMECMIN.) • .51 TcrMIN.) -13.37 FLOW PROCESS FROM NODE 205.00 TO NODE 205.00 IS CODE -1 -------------------~--------------------------------------------------------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««( 11 ·, , . , »>>>AND COMPUTE IJARIOUS" CONFLUENCED STREAM VALUES<'«« ... _=-_a=a::a=_=_===-_~ __ .. :a:===:a:== __ c=a_IC_=.' __ ':z.'.~ •• __ a __ •• = _______________________ _ CONFLUENCE VALUES USED FOR INDEPENDENT STREAM' 2 ARE' TIME OF CDNCENTRATIONCMINUTES)· 13.37 RAINFALL INTENSITY (INCH~/HOUR) ~ 3.21 iOtAL STReAM AREA (ACRES) -3.3~' TOTAL STREAM RUNOFF(CFS~ A'T CONFLUENCE" 5.97 CONFLUENCE I NFORMA T! ON' STR~AM RUNOFF TIME INTENSITY· NUMBER (CFS) (MIN.) (INCH/HOUR) ---------~--------------------------------~----------------------------~---- 1 1.81 ~8.31 :LS21 2 6.97 13.37 .~ ?'1C: ..,._ ....... RAINFALL INTENSITY AMn .".w TIME OF CO~!CENTRAT·I ON RATIO FORMULA USED FOR 2 STREAMS. VARIOUS CONFLUENCED RUNOFF' VALUE'S "ARE" A'S FOLLmJS' 1~.53" 10.92 C'OMPUTED CONFLUENCE ESTIMATES ARE' A~ FOLLmis' RUNOFF(CFS) -10.9Z' TIMECM~NUTES> -13.359 TOTAL AREA C A'CRES '>-6 .6 9 FLOW PROCESS FROM NODE 205.00 TO NODE 201.00 IS CODE -3 .. ------------------------------------------------------------------~--------- »»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««< »»>USING COMPUTER-ESTIMATED P!PESIZE (NON-PRESSURE FLmn««< ~. __ • ___ =_=~-. ___ ---aa-=a-a-=a--.---.-.... -.-..... ----. ____________________ _ ESTIMATED PIPE bIAMETER(INCH) INCREASED TO 18.00 DEPTH OF FLOW IN 18.0 INCH PIPE IS 8.9 INCHES PIPEFLOW VELOCITYCFEET/SEC.) -12.5 UPSTREAM NODE ELEVATION -258.00 DO!oJ,NSTREAM NODE ELEVATION". 255.00 FLOWLENGTH~FEET) -~15.0e MANNIN6S N -•• 13 ESTIMATED PIPE DIAMETER(INCH)· 18.00 NUMB~R OF PIPES - PIPEFLat·! THRU ,SUBAREAC CF,S) - TRAVEL T!MECMIN.) -.33 10.,92 TCCMIN.) • FLOW PROCESS FROM NODE 201.00 TO NODE 13.7~ 203.00 IS CODE - 1 3 ---------------------------------------~------~-----------------------------»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««< »»>USING COMPUTER-ESTIMATED P!PE.SIZE (NON-PRESSURE FLO~! ><<<<< ESTIMATED PIPE DIAMETER(INCH) INCREASED TO 18.00 DEPTH OF FLOW IN 18.0 INCH PIPE IS 8.1 INCHES PIPEFLOW VELOCITY(FEET/SEC.' -13.5 UPSTREAM NODE ELEVATION -256.00 , DOWNSTREAM NODE ELEVATION -210.90 FLOWLENGTHtFEET) ~ 250.00 MANNINGs N -.013 ESTIMATED PIPE DIAMETER(INCH) -18.00 NUM8ER OF PIP£S -1 PIPEFLOW THRU SU8AREACCFS) -10.92 TRAVEL TIMECMIN. , -.31 TC(M!N.) -1~ .01 FLOW PROCESS FROM NODE 203.00 TO NODE 202.00 IS CODE -3 , " ------------------------------------------------------~---------------------- »»>COMPUTE PIPEFLm·} TRAVEL TIME THRU 5UBAREA««< ~»»USINe COMPUTER-EstIMATED P!PESIZE (NON-P~EsSURE ~LOW)««< .... __ ._III __ ._-=· •• _____ • ____ ~_ra._._ .... _ ... _D._ ...............•......... -_ .. 111-- ESTIMATED PIPE O!AMETER~I~CH) INCREASED to 18.00 DEPTH OF FLm'J IN 18.0 HicH PIPE IS tL'3 INCHES PIPEFLOW VELOCITYCFEET/SEC.)· 13.7 UPSTREAM NODE ELEVATION -2~0.90 DOWNSTREAM NODE E(EVATION - FLOWLENETH(FEET) -2~0.1~ ESTIMATED PIPE DIAMETER(INCH) PIPEFLm-J THRU SUBAREA(CFS) ,- TRA,t'EL TIME! MIN,.) -.2'9 22S~70 MANN!NGS N -~0f3 .' 18.00 'NUMBER OF PIPES~ 10; 92' TC(MHL) -11.30 FLm-J PROCESS ~ROt1' NODE 202.00 TO NODE 202.00 IS CODE - 1 1 ----------------------------------------------------------------------------, -, »»)DESIENATE INDEPENDENT ~TR~AM'FOR CONFLUENCE««< CONFLUENCE IJALUES -USED FOR INDEPENDENT STREAM 1 ARE' TIME OF CONCENTRATIONCM!NUTES) -,'11.30 RAINFALL INTENSITY CINCHi/HOQR) ~ 3.08 TOTAL STREAM AREA C ACRES') -6.69 TOTAL STREAM RUNOFF(CFS) AT CONFLUE~tE • 10.92 FLOW PROCESS ~ROM NODE '202.00 TO NODE 202.00 IS CODE -7 ---------------------------------------------------------------------------- »»>USER SPECIFIED HYDROLOEY INFORMATION AT NODE««< USER-SPECIFIED I}ALUES ARE AS FoLLot·}S· TCCMIN) -15.07 RAIN INTENSITYCINCH/HOUR)· 2.85 TOTAL AREA(ACRES) • 9.60 TOTAL RUNOFf(CFS) ~ 15.11 FLOW PROCESS FROM NODE 202.00 TO NODE 2.02.00 IS COOE • »»>DESIENATE INDEPENDENT STREAM POR CONFLUENCE««< »»)AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««< CONFLUENCE VALUES USED FOR INDEPENDENt STREAM 2 ARE' TIME OF CONCENTRATIONCMINUTES)· 15.07 RAINFALL INTENSIty (INCH./HOUR)'· 2.9S TOTAL STREAM AREA (ACRES) -9.50 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE - CONFLUENCE INFORMATION' STREAM RUNOFF TIME INTENSITY NUMBER (CFS) (MIN.' (INCH/HOUR) 1 ---------------------------------------------------------------------~------ 1 2 10.92 15.11 11.30 15.07 3~018 2.853 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO FORMULA USED FOR 2 STREAMS. VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS' 21. 93 25.23 " < . . COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS" RUNOFF(CFS) -25.23 " TIMECMINUTES) s 16.070 TOTAL AREACACRES) • 16.29 FLOW PROOESS FROM NODE 202.00 TO NODE 215.00 IS CODE -3 -' ---------------------------------------------------------------------------- »»)COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««< »»)USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)««< DEPTH OF FLOW IN 24.0 INCH PIPE IS 15.6 INCHES PIPEFLOW VELOCITY(FEET/SEC.)· 11.S UPSTREAM NODE ELEVATION a 225.70 DOWNSTREAM NODE ELEVATION ~ 225.10 FLOWL~NGTHCFEET) • 25.00 MANNINGS N -.013 ESTIMATED PIPE DIAMETER(INCH) -24.00 NUMBER OF PIPES - P!PEFLo!~ THRU SUBAREA! CFS) -25·.23 TRAVEL TIMECMIN. ) -TCCMIN.) -IS.11 END OF RATIONAL METHOD ANALYSIS 1 , , . . , , . AREA'.'300 IS -~!; Ij, (, I, 'f g~1 ~t:.'J ~ 1"/64 (lev-6/7/ BIp "". · , , , • _________ n. ______ • _____________ ~----.--~ _____ • _____ •• ____ • ____ •• _~~----.--- RATIONAL METHOD HYDROLOGY COM~UTER PROGRAM PACKAGE Refere~ce' SAN DIEGO COUNTY FLOOD CONtROL DISTRICT 1991 HYDROLOGY MANUAL ______ r.=-________________ ._.DI _____ ,=!_=-_____ :=a ___ ia. ____ • ___________________ .-1: __ _ «««««««««««««««««««»»»»»»»»»»»»»»»»»»» (C) Cop~/right 1982 Advanc~d Engin~erin; Software. £AES J Eepe6ially prepared 'Qr' RICK EN6!NEE~IN6 COMPANY «««««««««««««««««««»»»»»»»»»»»»»»»»»)~~) -------------------------------_._----------------------------------~---.---- USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFbRMATIbN' -------.:..---------.---'--~.:...-------------..:-..::...----~--~-------------------~------- USER SPECIFIED $TORM EVENT(YEAR) ft 50.~0 SPECIFIED MINIMUM PIPE SIZ~(INCH) -19.00 SPECIFIED', PERCENT OF GRAPIENTS< DECIMAL) TO USE FO'R FRICTIOl\J SL'OPE Ie .110' RAINFALL-INTENSITY ADJUSTMENT FACTOR -1.000 NUMBER OF £TIME,INTENSITYJ DATA,P.AIRS'" 10 I) 5.000: 5.060 2 ) 10.000; 3.880 3) 11.000: 3.6~0 ~ ) 12.000: 3.~50 '5 ) 13.000; 3.270 5 ) 1~.000: ":1:. t?17r _ ....... .., 7) 15.000: ? QQI7r .... ""ww 9) 15.~00: 2.880 9) 18.000: 2.650 10 ) 20.000'; 2. ~80· SAN DIEGO HYDROLOGY MANUAL "C"-VALUES USED «««««««««««««««««««»»»»»»»»»»»»»»»»»»» Advanced Engineering Softw~re [AESl SERIAL No. A0L27A REV. Z.0 RELEASE DATE' 10/01/8Z ««««««««««««««««<~««»»»»»»»»»»»»»»»»»»» ~¥¥~¥¥¥¥¥¥~¥~¥~¥~¥¥¥¥¥ •• ~¥ ••••• ¥ •• ~~~¥~~~¥*¥~~.~¥~~~~¥4.~~¥~~~~.¥******~~.** FLOW PROCES~ FRO~ NODE 302.10 TO NODE 302.20 IS CODE -. ~ ---------------------------------------------------~---------~~----~--------»»)RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< SOIL CLASSIFICATION IS "0" RURAL DEVELOPMENT RUNOFF CqEFFICIENi c NATURAL WATERSHED NOMOGRAPH TIME OF CONCENTRAtION WITH 10-MINUTES ADCED -10.11CMINUTES) INITIAL SUBAREA FLmJ-LEN6TH(FEET> - . 20.00 UPSTREAM ELEtJATIoN -298.00 -J DotoJNS TREAMELEVAT rON' - ELEVATION DIFFERENCE - 290.50'-' '7.50 50 YEAR RAINFALL INTENSITYCINCH/HOUR)· 3.853 SUBAREA RUNOFF(CFS) -.05 TOTAL AREACACRE~) ~ .03 ' tOTAL RUNOFFctFS) -.0~, ~~~4~~4~~4~~~~~~4~~~~~4~4~~4~¥44444444~44~.4f~44~~44.~44444~44~~44~44444~~~4 FLO.l'} PROCESS 'FROM' NODE-'302.2'0' TO NODE 302'.00' IS CODE .. -' I 5 -----------------------------~~--------~--------~--------------~-----------~ »»>COMPUTE STREETFLOW,TRAVELTIME tHRU SUBAREA««< UPSTREAM ELEVATION -280.50 STREET LENGTH(FEET) -1050.00 OOl'/NST,REAM ELE'.'ATION n 'CURB HEIGTHCINCHES) -S. STREET HALFlHDTH( FEET) .. ' tP1 .00 STREET CROSSFALLC DEC IMAu -$PECIF!~D NUMBER OF HALFSTREETS CA~RYINS RUNOFF -1 ~'~TRAtIEL'TIM!; COMPUTEOr US-ING~ MEf.N FLOt'J( CFS)' '. 1.70 STREET FLOWDEPTH(FEET) -~21 HALFSTREEtFLOODWlbTHCFEEt)· 5.82 AVERAGE FLOW VELOC!TY(FEET/SECr) - PRODUCT OF DEPTH&VELOCITY -.90 STREETFLOW TRAV£LT!~~(MIN) • : 1.7i TC(M1N)· 11.82. 50 YEAR RAINFALL INTENSITY(INCH/HOUR). 3.005 SOIL CLASSIFICATION IS "0" RURAL DEVELOPMENT RUNOFF COEFFICIENT -: SUBAREA AREA{ACRES) a 2.10 SUBAREA RONO~FCCFS) = 3.25 SUMMED AREACACRESJ a 2.~3 TOTAL RUNOFF(CFSJ -3.30 END OF SUBAREA STREETFLOW HYDRAULICS- DEPTHtFEET) a .29 H~LFSTREET FLOODWIDTH(FEET) -7.81 FLOW VELDCITYCFEET/SEC. J .' 1.S~ DEPTH4VELOC!TY -1.28 FLOW PROCESS FROM NODE 302.00 to NODE 301.00 IS CODE - " --------------------------------~--------------------------"-----------------»»>COMPUTE PIPEFLOW TRAVELTIME THRU 5UBAREA««< »»>USING COMPUTER-ESTIMATED FIPE5IZE (NON-PRESSURE FLOW)««< ftI __ ~_=:a-=a==_=_=~=_c::_. __ I'll:a·.:c_:.::_:z=_a:."d:DiI::._= __ =_;r::;c_JI!:,.,.-~--=·===a:=a_ ..... _x= ... =_= _____ ., __ '. ESTIMATED PIPE DIAMETER(INCH} INCREASEd TO 18.00·. DEPTH OF FLOW IN 18!0 INCH PIPE IS 6.2 INCHES PIPEFLOW VELOCITY(FEET/SEC.) = c:: 1 _ .. UPSTREAM NODE ELEVATION -228.00 DOWNstREAM NODE ELEVATION = 215.15 FLot~LEN6TH(FEEn -110.00 MANN!NGS N -.01.3 ESTIMATED PIPE DIAMETER(INCH)·: '1"8.00 NUMBER OF PIPES -1 PIPEFLOW THRU SUBAREA(CFS) -3.~0 TRAVEL TIME(MIN.) -.30 TC(MIN.)-1 c: 1? .w ...... FLQ~ PROCtSB FRO~ NODE 301.00 TO NODE 301.00 IS CODE -1 --------~-----------------------..;.--------'!'""----"---------------..;..--------------'- »»>DESIGNATE 1NDEPENDENT STREAM FOR CONFLUENCE««< __ It'I==:C===-=_=*':::=I-=_==_=-"====ID:C==.-==_a-.aa.-==_=::.a ___ .... :a:.'D __ I'S-=_ ... ___ -=_a: __ =-_~_ ...... __ D: ___ _ CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE' TIME OF CONCENTRATION(MINUTES) -15.12' RAINFALL INTENSITY (INCH./HOURJ -2.97 TOTAL STREAM AREA (ACRES) -2.13 TOTAL STREAM RUNOFFCCFSJ AT CONFLUENCE -3.30 FLOW P~OCESS FROM NODE 301.90 TO NODE 30'1.00 IS CODE "If 6 __ ~ ____ ~ _____________ ~ __ ~ ___ ~~~~_i ______ ~~_~_~~ _______ ~ ____ • _______ ~ _____ :_~ »»>coMpUTE STR~ETFLOW TRAVELtIME l~RU SUBAREA(~«( UPSTREAM ELEV~tioN -2S1.90 DOWNStREAM ELEVATION -231.20 ,STREE1' LENGTHCFEET) -, 1200~00, CURB HEIGTH( INCHES) .. 5., STREETHALFWIDTHrFEET) = 50.00 STREET CRoSSFALLCDECIMAL) -.1200 SPECIFIED NUMBER OF HALFSl'REETS 'CARRYING" RUNOFF" 1 SlNGLE FAMILY DEVELOPMENT RUNOFFCOEFFICIENT • .5500 ..... TRAVEL T! ME COMPUTED US I NG' MEAN FLO',oJ( CFS) -4 .05 STREET FLmJDEPTHC'FEET) ".",,30' ' HALFSTREET FLOODWIDTH(FEEf)" 8.70 AVERAGE FLm,' VELOCITY< FEET/SEC, r.. ' 4.61 PRODUCT 'OF DEPTH&0ELOCITY ~ 1.39 STREETFLOW tRAVELTIMECMIN) .. J!.31 TCCMIN) -19.43 50 YEAR RAINFALL INTENSITY( INCH/H0UFU -2.5'28 ~USER SPECIFIED(SU8AREA)- S'INGLE FAMILY DEVELOPMENT RU~!oFF'eoEFFICIENT ... .5500, SUBAREA AREAC ACRES) ,.', . .) .10 SUBAREA RUNOFF( CFS > - SUMMED AREACACRES)" 3.53 TOTAL RUNoFFCCFS) .. END OF SUBAREA STREETF,tmJ HYDRAULICS- 1, c:':t .. " -~ J!.93 DEPTH( FEET) -.32 HALF STREET FLoom.J!DTH( FEET)" 9,,46 FLOW VELoCITY(FEET/SEC.) .. 4.77 DEPTH~VELoCITY· 1.50 .,' ¥¥¥¥¥¥~¥¥¥¥¥¥¥¥¥~¥¥.~¥.¥¥¥.¥4¥4¥4¥444¥¥4¥4¥4~~~~~4~~44~~ •• ~~44¥4444~4_4444~4 FLOW PROCESS FROM NODE 301.00 TO NODt' 301.00 IS CODE • 1 --------------------------------------~-----------------------~---~---------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< »»)AND COMPUTE VARIOUS CONFLU!;NCED STREAM VALUES«<<< a. ____ :a=-==-=cn_=-. __ ==_ ... __ ::a:s,. .... :c=rr..':.IC:.**_c ...... :alSrz ______ ......... ___ ._-= .. ..:_ ....... :s __ .-:a .. !111 ___ _ CONFLUENCE VALUES USED FOR INDEP~NDENT STREAM 2 ARE- TIME OF CONCENTRATIONCMINUTES)· 19.43 RAINFALL INTE~SITY (INCH.fHOUR' .. 2.53 . TOTAL STREAM AREA (ACRES'" , 3.53 TOTAL STREAM RUNOFFCCFS) AT CONFLUENCE -4.83 CONFLUENCE INFORMATI0N' STREAM RUNOFF· TIME INtENSITY NUMBER (CFS) (MIN.) (INCH/HOUR) -------------~-----------.------------------------------------------~-------- 1 2 3.30 ~. E3 15.12 , 2.955 ? C:?Q ... __ w RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO FORMULA USED FOR 2 STREAMS. VARIOUS CONFLUEN9ED RUNOFF VALUES ARE AS FOLLOWS' 7.'11 7.64 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS- RUNOFF(CFS) -7.64 TIME(MINUTES) -19.430 TOTAL AREA< ACRES) .. 5.95 FLOW PROCESS FROM NODE 301.00 TO NODE 3 ----~-----------------~--------~---------------~------------~--~------------ »»>COMPUTE PIPEFLOto.1 TRAVEL TIM'!;: THRU SUBAREA««< »>>>USING COMPUTER-ESTIt1ATED PI-PESlZE n!ON-PRESSURE FLOl·! )«<:« _. _____ ~ __ ~c ___ n_~ __ $ _____ ~_~ft~_n_.~ __ ~ ____ ~."~ ____ =_~._~.~-.-_=_=~_--~~~-~- ;. . ESTIMATED PIPE'DIAMETER(INCH) INCREASED TO 19.00 , (' t DEPTH OF FLOtoJ IN 19.0 INCH PIPE IS . 7.7 INCHES PIPEFLOW VELOCITY(FEET/SEC.) = 10.6 UPSTREAM NODE ELEVATION· 226.15 DOWNSTREAM NODE ELEVATtON ~ . 225.70 FLOWLEN6TH(FEE~)· 11.00 MANNINGS N • .,01'3 ESTIMATED PIPE DIAMETER(INCH) • NUMBER OF PIPES ~ 1 P!PEFLm·J THRU SUBAREA( CFS '> '. ' '7.6,1 TRAVEL TIME(MIN.) -n.? .\:1- FLOW PROCESS'~ROM NODE 215.00 TO NODE 215.00 IS COQE ~ 1 ______________________________ ~-----------------------__ · __ .. t __ ..... _____________ _ . . . »»>DES!GNATE INDEPENDENT STREAM FOR CONFLUENCE««< ___ • _________ r._ .. _.,:Dft_ .. _U,. __ IU __ ~ .... -.-•• -... Jnr:c-O&l=-..... --... .,::---.. lQ-.. --~-.... -=-!'t_-... _-=-lII .. CONFLUENCE VALUES USED FOR INDEPENDENT STREAr1 1 ARE- TIME OF CONCENTRATIONCMINUTES) z RAINFALL INTENSITY (INCH.!HOUR) - i 9.15 2.53 TOTAL STREAM AREA (ACRES) -5.96 TOTAL STREAM RUNOFF(CFS) 'AT CONFLUENCE -7.S~ . . . 4444444 ....... 4 ............ 444444444 .. 44 ... 4 ... 44.4 ... 4444 ... 44.4,444444 ... 444 ... 4 oW .. " 444444404 4· ....... ·4 ......... 44..,· ... 4 FLOW PROCESS FROM NODE 202.00 TO NODE 215.00 IS CODE -7 . " ---------------------------------------~---~-----------------------------~--»»>USER SPECIFr~D HYDROLOGY iNFORMATION AT NODE««< USER-SPECIFIED VAL~ES ARE AS FOLLm'JS- 1CCMIN) -IG.l1 RAIN INTENSITYCINCH/HOUR) -2.85 TOTAL AREACACRES)· IS.l9 TOTAL RUNOFF(CFS) -25.23 FLOW PROCESS FROM NODE 215.00 TO NODE' 215 .. 00 IS CODE -1 ----~-----------------------------------------~------------------------~~---»»)DESI6NATE INDEPENDENT STREAM FOR CONFLUENCE««< »»)AND COMPUTE VARIOUS CONFLU~NCED STREAM VALUES««< _=_uaa=-_:.c_====:a_:a::. ___ :cc= __ :w=::.n ___ •• nn,.. _________ =-_!li!llaa: __ •. ____ .wr. __ -= .... mlft#!IR_n ___ _ CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ~RE' TIME OF CONCENTRATIONCM!NUTES) -16.11 RAINFALL INTENS1TY CINCH./HOUR) -2.85 TOTAL STREAM AREA <ACRES) ~ 1~.29 TOTAL STREAM RUNOFFCCFS) AT CONFLUENCE - CONFLUENCE INFORMATION" STREAM NUMBER RUNOFF <CFS) TIME INTENSITY <MIN.) (INCH/HOUR) 25.23 ---------------------------------------------------~--..... --------.... -~--------..... --.- 1 2' 1.6~ 25.23 19. ~5 16.11 2.527 2.8'18 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO FORMULA USED FOR 2 STREAMS. VARIOUS CONFLUENCED RUNOFF VALUES ARE.AS FOLLOWS- 30.02 32.01 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS' RUNOFFCCFS) -32.01 TOTAL AREA(ACRES) • FLOW PROCESS FROM NODE TIME(MINUTES) - 22.25 215.00 TO NODE 16.110 300.00 IS CODE - -------~-----------------~----------------~------------~~---~---------------»»>COMPUTE PIPEFLbw TRAVELTIME THRU SUBAR~A««< »»)USIN6 USER-SPECIFIED PIPESIZE««< ___ .. _:zi:aa.=_==· .. .:s= __ ~==-!D=a.8::·::IIii:: ... =_.=aasC'l_rz.==."IJI_nla~_ ... _ .. :.tt _____ ~ ___ ... _ .. "Il:aa: .. 'I':_:.=a=raaaln=:raD .. _ DEPTH OF FLOW IN 30.0 INCH PIP£ IS .17.2 INCHES PIPEFLOW VELOCITYCFEET/SEC.) ~ 11.0 UPSTREAM NODEEL!;I.'ATION'" 225.10 DOWNSTREAM NODE ELEVATION -224.50 FLOWLENGTHCFEET) -. 35.00 GIVEN PIPE DIAMETERC!NCH) - PIPEFLOW THRU SU8AREACCFS) - TRAVEL TIMECMIN.) -.05 MANNINSS N -.013 30.~0 NUMBER OF PIPES - 32.01 TCCM!N.)· 15.15 END OF RATIONAL METHOD ANALYSIS 1 • < ) " ~ ) . ARE A" " 4 0 0 [Lev. ~l'l et- .. " . , RATIONAL METHOD HYDROLOGY COMPUTER PR06RAM PACKAGE . 'Referencl" SAN DJEGO COUNTY FLOOD CONTROL DISTRICT IS81 HYDROLOGY ~ANUAL , ,., _______ a_~ _______________ " ___________________ ._. _________ D ___________ M _____ _ (C) Copyright 1982 Advanced EnQineeri~g S9't~are [AESl RIC~ ENGJNEERING COMPANY < « « ('( < < < «< < < «< < ««« 1~(.( -( «« ««<> > > > > > > > > » >;» > > >-> »> > > > > > > > > » > > > > ?,> >;. ----------------------------------------~-----------------~-----------------USER .SPEC"IFIEP HYDRO~OGY AND ~YDRAUL,!G' MODEL "INFORMATION" • ---------------------------_ ..... -.----------_ ..... _----_ ..... _-----------------------_ ...... - US£R SPECIFIED STO~M EVENT<YEAR)·" :50.00 SPECIFIED"~!NIMU~ PIPE SIZE(INC~' -i8~00 SPECIFIED PERCENT Of: 6RAD"IENTS(QEcrMAt.\ TO USE FOR"FRICTION SLOPE RAINFALL-INTENSITY ADJUSTMENT FACTOR" 1.,(1)(1)0 NUMBER OF CTIME, INTENSITY] DATA PAIRS '., 1(1) 1) 5.0(1)(1): 5.050 2 ) 10.000; 3.880 3) 11.000; 3.£;40 0 12.000; 3.450 5) 1 ':l: t7lti'lI7l, ... _ • .,"" ,",.1 3.270 6 ) 14.000: 3.120 7' .. 1t:: 171171171, ... -._--, 2.98.0 8 ) 15.00(1); 2.95(1) S) 18.000; 2.650 10) 20.000: 2.19(1) SAN DIEGO HYDROLOGY MANUAL "C~-VALUES USED .", tl~ ...... «««««««««««««««««««»»»»»»»»»»»»»»»»»»» Advanced Engineering Software [AES] SERIAL N~. A(1)127A REV. 2.0 RELEASE DATE'10!01!8Z ««~««««««««««««««««<»»»»»»»»»»»»»»»»»»» *************************************4*****************************44******* FLOW PROCESS ~RbM NODE 100.10 TO NODE ~00.3e IS,CODE -2 -------------~-------------------------------------~----------~----------~--»»)RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< *USER SPECIFIED(SUBAREA" SINGLE FAMILY DEVELOP~ENT RUNOFFCOEFFICIENT .. ~55(1)0 INITIAL SUBAREA FLOW-LENGTH(FEET) -1~0.0(1) UPSTREAM ELEl)ATION -350.20 DOWNSTREAM ELEVATION -317.00 ELEVATION DIFFERENCE ~ 3.20 URi3A~r SUBAREA OVERLAND TIME OF FLmH MINUTES) - 50 YEAR RA!NFALL INTENSITY( I'NCH/HOUR'> '... 1.'003 SUBAREA RUNOFFCCFS) -.97 TOTAL AREA(ACRES) -.-11 TOTAL RUNOFFCCFS) -'t17 .... FLm~1 PROCESS FROM NODE -100.30 TG ~OOE 100~~0 IS CODE -6 , .,. '. . --------------------------------------------~-------------------------------»>>>COMPOTE STREETFLO~! TRAVELTI'ME 'THRU 'SUBAREA««< UPStREAM ELEVATION ~ STREET LENGTHCFEET) a: DOI!!NSTREAM ELEVATION - CURB HEIGTHCINCHES) -6. .32.1.80 -315 .. 0l~ STREET HALFWIDTHCFEET) ~ 18.01 . STREET CROSSFALL(DECIMAL) -.02~0 SPECIFI;D' NUMB,ER OF HALFSTREETS CARRYING RUNOFF -1. SINGLE FAM'rLY. DEVELOPMENT RUNOFFCOEFFICIENT. -.. .5500 .''*TRAtJELTIME COMPUTED U'SING MEAN FLd~J<CFS) -" 2.17 STREET FLO~!oEPTHC FEET) -.27 HALFSTREET 'FLOOm-JhlTH( FEET)" 7.-13 AVERAGE FLOW VELOCITYCFEET/SEC.) -3.23 PRODUCT OF DEPTH&VELOCITY -.8.9 STREETfLO\'}'. TRAt.'!;L TIME( MIN) ' .. ' 1.79 50 YEAR RAINFALL INTENSITY( INCH/HOUR) -3';516 4USER SPECIF!ED(SUBAREA)~ , SINGLE FAMILY DEVELOPMENT RONOFFC'OEFFICIENT' -.5500' SUBAREA AREA ( ACRES) -: '. 1. 22 StH~AREA RUNOFF C CFS) - SUMMED AREACACRES) -1.66 TOTAL RUNOFFCCFS) - END OF SUBAREA"STREETFLO~J HYORAULICS' DEPTHC FEET)·' .31 HALFSTREET FLQOmHDTHC FEET) - FLOt-! VELOCITYCFEET/SEC.)" 3.5'2 DEPTH4VELOCITY- B.98 1.11 FLOW PROCESS FROM NODE 400.20 TO NODE 400.10 IS CODE ~ 3 ------------------------------------------------~---------~-----------------»»>COMPUTE PIPEFLOW TRAVELTIME THRU 5UBAREA««< »»>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)««< ______ .: __ =tIma= ________ .. ___ .. _ .. ,.~-----=-:a .. IC-I:--~--;.----.. --'_~-N .. -_--_:-_---1::II----_-- ESTIMATED PIPE DIAMETER(INCH) INCREASED TO 18.00 DEPTH OF FLOW IN 18.0 INCH PIPE IS 5.3 INCHES PIPEFLOW VELOCITY(FEET/SEC.) -7.7 UPSTREAM NODE ELEVATION -316.85 DOWNSTREAM NODE ELEVATION -~t? 11m _ ........ I .... FLOWLENGTHCFEET) -MANN!N65 N - ESTIMATED PIPE DIAMETERCINCH) ~. 18.00 NUMBER OF PIPES - PIPEFLOW THRU 5U8AREA(CFS) -~ ~c; _ •. W_ TRAVEL T!ME(MIN.) -.30 TCCMIN.) ~ 11.80 FLOW PROCESS FROM NOeE 400.10 TO NODE 4-00.10 IS CODE - 1 1 -------------------------------------------~------~----~------~------------- »»>'DESISNATE INDEPENDENT STREt'iM FOR CONFLUENCE««< ___ ,.=-_:a_l:It ____ ._ ... '!8 ____ ZI! ________ = __ ' __ ~~_::IIa" _________ * __ ._--.. ,------------_.m:--!lt-- CONFLUENCE IJALUES USED FOR INDEPENDENT STREAM 1 ARE' TIME OF CONCENTRATION(MINUTES) -11.80 RAINFALL INTENSITY <INCH./HOUR)· 3,19 TOTAL STREAM AREA (ACRES) -1.66 ' TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE -3.35 o tI\ t- 0' :t :t .. .. :t Of :t .. Of :t .. .. :t ~, :t U) :t (J) .. :t • Of S' :t lU ['-:t 0 m, .. Cl ~l .. (.l ~J -. :t U) -. .. Ul Ul • :t .... ..... :r: .. J ..... Q-.. s , ..... <1: s Ul :t -. J .... ' 0: . '['-'lI_ . .. . J ..... ~l ... -l!1 CJ Ul (.1 .. ~l I U) ~ • ~) Ul el lLJ ,.... • ~J I .... • L11 ~ Ul /-<J ll. • ~. I Ul • 1--~) 1-. el ~ lL. ,. J>-• z tn ~z 0 .. I ":1 I lIJ -. :2: :r: • Z .. 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