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Last modified
1/25/2010 6:28:05 PM
Creation date
10/4/2006 11:57:39 PM
Metadata
Fields
Template:
Floodplain Documents
County
Weld
Community
Milliken
Stream Name
South Platte
Basin
South Platte
Title
Technical Addendum for Flood Plain Information, Drainage Plan, and Street Improvement Plan at Milliken
Date
2/1/1983
Prepared For
Milliken
Prepared By
Simons Li & Associates Inc.
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />., <br /> <br />OLD,GRAD <br />."~"IT <br />IN T <br />Df'SO <br /> <br />DITl <br /> <br />. <br /> <br />T'>I 1* <br /> <br />. <br /> <br />. <br /> <br />'IIIMM ()47d Uo:-nN'i <br />(Uf-;:;rf:RN ru.4/ f1rni <br /> <br />1 ENTRY MADE TO RUNOFF MODEL <br />HILIKEN WATERSHED <br />100-YEAR/I-HDUR RAINFALL <br />OINlET NUMBER 1 <br />ONUMBER OF TIME STEPS 180 <br />OINTEGRATION TIME INTERVAL (MINUTES), ~.oo <br />1.0 PERCENT OF IMPERVIOUS AREA HAS ZERO DETENTION DEPTH <br />OFOR 13 RAINFALL STEPS, THE TIME INTERVAL IS 5.00 MINUTES <br />OF OR RAINGAGE NUMBER 1 RAINFALL HISTORY IN INCHES PER HOUR <br />.92 1.22 1.54 1.84 2.76 5.22 7.68 <br />1.22 .92 0.00 <br />lSUBAREA GUTTER WIDTH AREA PERCENT SLOPE RESISTANCE <br />NUMBER OR MANHOLE (FT) (Ae) IMPERV. (Fl/FT) IHPERV. <br />B 18 6000. 211.0 7.0 .0210 .016 <br />9 19 6000. 57.0 7.0 .0090 .016 <br />10 19 6000. 36.0 7.0 .0090 .016 <br />16 20 7000. 201.0 7.0 .0270 .016 <br />17 24 1500. 105.0 7.0 .0300 .016 <br />40 25 886. 18.0 7.0 .0050 .016 <br />41 26 400. 9.0 30.0 .0170 .016 <br />42 27 600. 13.0 33.0 .0170 .016 <br />43 27 1045. 24.0 7.0 .0170 .016 <br />OTOTAl NUMBER OF SUBCATCHHENTS, 9 <br />OTOTAl TRIBUTARY AREA (ACRES), 674.00 <br />I <br />GUTTER GUTTER NDP NP <br />NUMBER CONNECTION <br />20 19 <br />19 25 <br />24 25 <br /> <br />o 1 CHANNEL <br />o 1 CHANNEL <br />12 1 CHANNEL <br />TIME IN HRS VS INFLOW IN CFS <br />0.0 0.0 1.5 0.0 <br />2.6 108.4 2.8 80.0 <br />o 1 CHANNEL <br />12 3 <br />'in,~'L'il.~'i.'iYt\ i~ 'iJ'Dii'e.'i\ ~\Yl'I~E'R '::b i'Di ~'t... <br />0.0 0.0 20.0 0.0 <br />150.0 65.0 200.0 90.0 <br />o CHANNEL <br />o CHANNEL <br />26 CHANNEL <br />TIME IN HRS VS INFLOW IN CFS <br />0.0 0.0 .8 0.0 <br />1.6 22.5 1.9 26.1 2.1 31.6 <br />2.8 59.0 3.1 54.4 3.3 ~7.9 <br />3.9 21,2 4.1 16.8 4.3 13.2 <br />.5.3 .9 5.4 0,0 <br />50 31 0 CHANNEL <br />31 30 0 1 CHANNEL <br />OTOTAL NUMBER OF GUTTERS/PIPES, 10 <br />1ARRANGEMENT OF SUBCATCHMENTS AND GUTTERS/PIPES <br />GUTTER TRIBUTARY GUTTER/PIPE <br /> <br />25 <br />29 <br /> <br />2,4 <br /> <br />137.1 <br />29 <br />27 <br /> <br />100.0 <br />18 <br />27 <br />26 <br /> <br />40.0 <br />27 <br />50 <br />50 <br /> <br />1S <br /> <br />19 <br />20 <br /> <br />"2;; <br /> <br />2' <br /> <br />26 <br />27 <br /> <br />29 <br /> <br />31 <br />'0 <br />o INLET <br />I <br />OHYDROGRAPHS WILL <br />24 <br /> <br />50 <br />27 26 <br />TRIBUTARY GUTTER-PIPE-MANHOLE <br />30 <br />BE STORED FOR THE FOLLOWING 8 POINTS <br />19 29 25 26 ~ e <br /> <br />FACTOR <br />PERV. <br />.250 <br />.250 <br />.250 <br />.250 <br />.250 <br />.250 <br />.250 <br />.250 <br />.250 <br /> <br />WIDTH <br />OR DIAM LENGTH <br />(FT) eFT) <br />5.0 4600. <br />5.0 3100. <br />5.0 5600. <br />1,8 74.8 <br />2.9 49.0 <br />10.0 900. <br />1.Q L <br />'CI'';>'B1Jl'';>'E.'RH.lJll <br />30.0 5.0 <br />300.0 140.0 <br />5.0 4600. <br />10.0 1000. <br />10.0 1000. <br />.9 A^ 4.:.2 <br />2.3 'tv, V <br />3.4 40.3 <br />4.4 10.2 <br /> <br />50.0 <br />25.0 <br /> <br />900. <br />3400. <br /> <br />?7 <br /> <br />3.38 <br /> <br />2.46 <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />SURFACE STORAGE(IN) <br />IMPERV. PERV. <br />.100 .400 <br />.100 .400 <br />.100 .400 <br />.100 .400 <br />.100 .400 <br />.100 .400 <br />.100 .400 <br />.100 .400 <br />.100 .400 <br /> <br />1.54 <br />INFILTRATION RATE(IN/HR) GAGE <br />MAXIMUM MINIMUM DECAY RATE NO <br />10.00 6.00 .00115 1 <br />10.00 6.00 .00115 1 <br />10.00 6.00 .00115 1 <br />6.00 1.00 .00115 1 <br />6.00 1.00 .00115 1 <br />2.00 1.00 .00115 1 <br />2.00 1.00 .00115 1 <br />2.00 1.00 .00115 1 <br />2.00 1.00 .00115 1 <br /> <br /> INVERT SIDE SLOPES <br /> SLOPE HORIZ TO VERT <br /> (FT/FT) L R <br /> .0130 25.0 25.0 <br /> .0080 50.0 50.0 <br /> .0050 20.0 20.0 <br /> 1.9 140.6 2,1 <br /> 3.1 19.1 3,3 <br /> .0010 150.0 IS0.0 <br /> .0010 10..0. 10..0 <br />HI CF, <br /> 40.0 10.0 50.0 <br /> 400.0 190.0 500.0 <br /> .0150 35.0 35.0 <br /> .0120 20.0 20.0 <br /> .0120 20.0 20,0 <br /> ~1: 1 11.4 I.3 <br /> ~."1 48.8 2.6 <br /> 3,6 32.9 3,8 <br /> 4.6 7.7 4.9 <br /> .0010 6,0 6,0 <br /> .0070 2,0 2.0 <br /> TRIBUTARY SUBAREA <br /> <br />10 <br /> <br />43 <br /> <br />TRIBUTARY SUBAREA <br /> <br />.,0 <br /> <br />OVERBANK/SURCHARGE <br />MANNING DEPTH JK <br />N (FT) <br />.045 4.00 <br />.045 4.00 <br />.045 4.00 <br />160.1 2.3 155.3 <br />0.0 <br />.035 <br />.035 <br /> <br />15.0 <br />240.0 <br />.045 <br />.035 <br />.035 <br />17.0 <br />55.7 <br />26.5 <br />3.8 <br /> <br />.035 <br />.030 <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />I <br />I <br />-I <br /> <br />. <br /> <br /> 8 <br />20 9 <br /> 16 <br /> '" <br />19 24 40 <br /> 41 <br />29 18 42 <br />2. <br /> <br />2~:gg <br /> <br />e <br /> <br />I <br /><0 <br /> <br />70.0 25.0 <br />.11.00 1 <br />5.00 i <br />5.00 -1 <br /> <br />e <br /> <br />(': <br /> <br />I.4 <br /> <br />20.6 <br /> <br />II <br /> <br />6.00 <br />4.00 <br /> <br />. <br />" <br /> <br />[I. 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