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Mhere: Q = peak discharge for desired storm event (cfs) <br />*n = Manning's roughness coefficient <br />A = cross sectional area of channel flow (ft=) <br />R = hydraulic radius (ft) <br />S = channel slope (ft/ft) <br />* A Manning's roughness coefficient of 0.035 was utilized for the design <br />of all ditches and diversions. This value corresponds to a small <br />earthen channel and is considered to be conservative since ditches <br />will be vegetated. <br />also <br />V=p <br />• Where: V = flow velocity (fps) <br />The Proposed Pond and Ditch Design Map, (Nap 23-1), contains a ditch <br />schedule summarizing the ditch designs. This map also contains a <br />cross-section illustrating a typical ditch configuration, <br />r <br />J <br />23-152 <br />