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i'JlLSIliftfl9 T <br />f1EePS o <br />p.o. box 121 CLIENT: Cfy of Greeley <br />cowdrey, w 80434 PROJECT: Eogkview DATE: 1/11/2003 <br />(970) 723.4(MI PROJECT NO.: 02.08 BY: 1'EB <br />BASIN: Country Club -Historic to C6S RR Bridge <br />Tone of Concentration <br />Ref 1: III-15 Overlord flow: <br />Upstream elev <br />Dnstremn elev <br />Flow length in feet, L <br />Land slope in percent, 5 <br />Coefficient, C <br />T =1.8 * (l.ll~ * L"05 / 5"033 <br />Chormel flow: <br />Ref 2: Fig 3-2 <br />Upsfrmm elev <br />Onsir'ram elev <br />Flow length in feet, L <br />Slope in percent, 5 <br />Average velocity in fps, V <br />Pipe Flow: <br />Upstream ehw <br />Dr~stream elev <br />Pipe length in ft, L <br />Pipe sbpe in ft/ft, s <br />Diameter in inches <br />Cross section flow ores in sq ft, A <br />Wetted perimeter m ft, Pw <br />Hydraulic radius in ft, R = A/Pw <br />Morning's roughness coefficient, n <br />Flow velocity in fps, V=1.49(8"2/3xs"1/2~n <br />Sum for: Time of Concentration in minutes, Tc <br />but not > Tc =(L/i80k10 (Dema~ Urban) <br />But not less than: <br />Recommend Tc = <br />USE Tc = <br />0 yr 100 yr <br />4910.00 <br />4850.00 <br />3,600 <br />1.67% <br />0.00 0.20 <br />0.0 min 82.1 min <br />4650.00 <br />4670.00 <br />14,157 <br />1.27% <br />1.0 <br />O.0 min 236.0 min <br />~~ <br />0.00 0.00 <br />0.00 0.00 <br />0.00 <br />O.0 min O.0 min <br />0 min 318 min <br />10 min t09 min <br />5 min 5 min <br />5 min 109 min <br /> 109.0 min <br />gnat Historicxls Pope 2 <br />