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<br />.... ... ",.' . <br /> <br />. .' . <br /> <br />e <br /> <br />e <br /> <br />P"'.::; <br /> <br />Flow Capacity of HCFCD Ditch A10407 - worst probable case <br /> <br />The section of the ditch with the smallest area is located at Station <br />16 + 00 (refer to Ditch Elevation Detail). <br /> <br />Elev. of centerline (sta. 0 + 00) = 3.31 <br />Elev. of centerline (sta. 16 + 00) = 6.11 <br /> <br />Avg. slope of HDFCD ditch A10407 = 6.1 - 3.3 = 0.00175 ft/ft. <br />1600 <br /> <br />Cross-section Area = 615.57 ft2 <br /> <br />Wetted Perimeter = 96.6 ft. <br /> <br />n = 0.035, for natural channels <br /> <br />Q = 1.486 A(R)2/3 Sl/2 <br />n <br /> <br />R = A = 615.57 = 6.37 <br />P 96.6 <br />Qcapacity = 1.486 (615.57) (6.37)2/3 (0.00175)1/2 <br />0.035 <br /> <br />Qcapacity = 3757 cfs <br /> <br />.', <br /> <br />,5 -/~-:--8' S- <br />