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Drainage Area from J2, B1, S2, SWS(s)1-4: 19.4 acres <br /> Total Con tributing Drainage Area: 24.7 acres <br /> MATERIAL: Rock Riprap <br />Trapezoidal Riprap Channel <br /> Steep Slope Design - Simons/OSM Method <br /> Design Bottom Manning's <br /> Discharge Width ZLeft ZRight Slope n <br /> (cfs) <br />---------- <br />---------- (ft) ($) <br />------------------------------- <br />---------------------- <br />-------- <br /> <br />71.37 --------- <br />10.0 3.0:1 3.0:1 17.0 -------- <br />0.039 <br /> Top Hydraulic Froude <br /> Depth Velocity Width Radius Number <br /> (ft) <br />-------- <br />-------- (fps) (ft) <br />------------------------------- <br />--------------- <br />- <br />-------- <br /> <br />0.46 --- <br />------------ <br />13.70** 12.7 0.404 -------- <br />3.78 <br />w/ Freeboard: 0.76 14.5 <br />** Non-uniform flow - Velocity shown is V=Q/A and may not be applicable <br />----DMax---- ----D50---- ----D10---- <br />(ft) (in) (ft) (in) (ft) (in) <br />1.25 15.00 1.00 12.00 0.33 4.00 <br />Runoff Peak <br />__-------Volume----Discharge- <br />(ac-ft) (cfs) <br />IN/OUT 7.25 71.37 <br />******************************************************************************* <br /> <br />