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Asd -6 <br />Solution: Maximum Allowable Velocity, Vmax = 3.5fps <br />Minumum Allowable Velocity, Vmin = 2.Ofps <br />q10 = 1_6 cfs (from peak discharge calculations) <br />n = 0.03 (Manning coefficient for riprap) <br />sideslope = 2_1 (horizontal to vertical) <br />slope = 0.045 feet/feet <br />Manning equation: q10 = 1.49 AR2/3 S1/2 <br />n <br />Hydraulic Data Q = 1.6 cfs <br />D = 0.97 feet <br />A = 0.44 feet2 <br />R = 0.21 feet <br />s = 0.05 feet/feet (max w/o dumped rock) <br />n = 0.03 <br />• V = 3.6 fps - Use riprap energy dissapator <br />IV. TOTAL RESERVOIR VOLUME: <br />Liquid Volume = 0.18 Ac-Ft = 7.891 cubic feet <br />Sediment Volume = 0.13 Ac-Ft = 5,663 cubic feet <br />Design Reservoir For a Volume of 0.31 acre-feet <br />Dimensions: Bottom length = 60 feet <br />Width = 30 feet <br />Depth = 5 feet <br />Side slopes = 2 I <br />A cleanout marker will be installed at the level at which <br />sufficient storage capacity remains for both the runoff and <br />sediment generated by the ten-year, 24 hour storm event. The <br />level will be calculated and the marker installed after the <br />reservoir is constructed. Analysis will be included in the <br />sediment pond certification document. <br />• <br />01/16/86 <br />