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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />0.8 <br /> <br />60 <br /> <br />0.180 <br /> <br />Ct = Kt(q...CO)0.14 <br />s 0.22 <br />s d BASIN SLOPE Ut/ft) <br /> <br />0.160 <br /> <br />50 <br /> <br />0.7 <br /> <br /> <br /> ~ <br /> 0 <br />0- 0.6 0.140 +- 40 <br />() ~ <( <br /> W <br /> 0:: <br />r- r- <( <br />z z <br />w 0.5 0.120 w 30 <br />Cp - CI) <br />() () ::::> LITTLETON /ARAPAHO <br />1.1.. 1.1.. 0 I <br />1.1.. 1.1.. > COUNTY CURVE <br />W w 0:: <br />0 0 w D~NS'Tyl <br />() 0.4 0.100 () a... 20 <br /> ~ <br /> Kt MEDIUM DENSITY <br /> 0.3 0.080 10 <br /> <br /> <br /> <br /> <br /> <br />0.2 <br /> <br />0.060 <br />100 <br /> <br />3 <br /> <br />4 <br /> <br />5 <br /> <br />o <br /> <br />o <br /> <br />40 <br /> <br />60 <br /> <br />2 <br /> <br />20 <br /> <br />80 <br /> <br />o <br /> <br />IMPERVIOUS - % <br /> <br />HOUSING DENSITY'" UNITS PER ACRE <br />FIGURE 2: IMPERVIOUS AREA / HOUSING DENSITY CURVE <br /> <br />FIGURE I: PEAK TIME a RATE OF FLOW <br />COEFFICIENTS <br /> <br />SOURCE' URBAN DRAINAGE a FLOOD CONTROL DISTRICT, <br />JANUARY 1979. <br /> <br />SOURCE' URBAN DRAINAGE AND FLOOD CONTROL DISTRICT, MAJOR DRAINAGEWAY <br />PLANNING REPORT, LEE GULCH. LITTLE CREEK. OCTOBER 1977 <br />(REFERENCE A) <br /> <br />6 <br />