PERMFILE69395

• Permit No: M1989065
• IBM Index Class Name: Permit File
• Doc Date: 2/15/1989
• Doc Name: CUHP RUNOFF ANALYSIS
• Media Type: D
• Archive: No

~• III IIIIIIIIIIIII III ~ ~
GU N P ~~ No~~
l.J. U.. F~. C. D. CUFIF' FtUhJOFF ifJALY'f;IS EXECUTED DfJ DATE C/ 15/89 ~ O~
CUHF'E/F'C VEF:SICIIV MODIFTEU IN JHNLJARY 198:;
E+ASItJ II>: WILLOW -- 13ASIfJ COMMENT: 4J1LLO41 CREEF: WINt;LEFt
AREA OF' BF+SIfJ LENGTH OF F'AGIN DIST TO CENTF:OID IhIF'ERVIUUS AREA SL.OF'E'
(SL?MI) (MI) (MI) (F'CT) (FT/FT)
~. 88 4. 17 ~'. OD ~'.. 00 . Ci230
COEFFICIENT CDEFFICIENi
(FiEI=I_.F:CTIfJG TIhiE f0 F'EAI<::) (REk_ATED T(J F'EAF:: RA-FE UF= FiUhIOFFi
1 ~~6 .'91
CALCULATED LJhJI'i HYUFiDGFiAF'I-I
TIh1k_ -FO F'EAF: F'F:FiF: RATE OF RUNOFF UPJII HYDROGF;AF' F'EAF:: VOL. LIME OF RUFJOFF
(I•tlhli (CFS/SG'MI7 (CFS) (AF")
b6.3=; _-35.1.4 677.21 15'..60
411DTV-I AT :iii = 128. MIhJ, WIGTF~I A-F 75 = 66. MIhJ. t::~~Ci = ,31 k;75 = .4
RAIhJFAL.L LOSSES INFUT W/ E~ASIN DHT'A
MAX. FERVIOLJS RET. _ .~(i Ihl.
INFILTRATIDIV = '.00 IN. /HF;.
F=I'JINFL = .SC> IN./HR.
w~x~t STORM NO. = 1 +~++r++
MAX. IhIF'EFiVIOUS FiEI. _ .''-•Ci IhJ.
DECAY = . C>Ci18C>/SE.COND
DR~TE OF: RETURN F'EF;IOD = 1Ciii-YEAR
-Fi]TAI_ F'F2FCIF'. _ ~.i11 (1-FiUUR RAIhJ = ?. 6C>) EXF_-L'ES6 F'F:EI.:IF'. = 1.47' INCHES
VOLLJh1E OF' EXCESS F'RECIF' _ ..^_26. ACRE-FEET
F'EAM: G? = 959. CFS TTME DF FEAI,: = 10Ci. MIN.
INFILT.= 3.OC> IN/HR DECAY = .0018(1 FNIfJF = .SCi IN/FIR
MAX.F'ERV.RET.= .50 IhJ. MAX.IMF'.RET.= .~~> IIV.
+!*~* STDRM NO. = 2 *++r+! DATE.:. OR RETURN PERIOD = 50-YEAR
TOTAL FFiECIF'. _ 2.66 ! 1-HOUF: RATN = 2^. 3C>) EXECESS F'RECIF'. _' 1 . Ci9=~ INL'HES
V01_UME DF EXCESS F'RECIF = 168. ACRE-FEE:T
FE:AI: O = 712^. CFS TIMF_- OF PEAI<: = 1.CiCi, MIhJ.
INFILT.= ~.CiO IN/HR DECAY' _ .00180 FNINF = .5!.i IN/HR
hiA}:.F'ERV.RE-f.= .SCi IN. hIAX.Ih1F'.RET.= .__Ci IN.
*~~~ STORM N0. _ ., ~**~ DATE OR RETUF;N PERIOD = 10-YEAR
TOTAL_ F'FiECIF'. = 1.97 (1--HDUFt F-:AIN = 1.7Ci) EXECESS FRECIC-'. _ .4.=6 INCHE:~
VOLUME OF~ EXCESS F'F;ECIF' = 67. ACRE-FEET
F'EAF:: G = 276. CFS' TIME OF F'EAk: = 1Ci0. MIN.
INFIL7.= 3.CiCi IN/HR DECAY = .0Ci18Ci FNINF = .50 IN/HR
MF'.}:.F'ERV.RET.= .Sl-i IN. MAX. IMF'. RET.= ±ii IN.