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SEDCAD 4 for Windows <br />I Dead Space: 0.00% <br />*Sediment capacity based on A verage Annual R of 30. D for 3 year(s) <br />Emergency Spillway <br />Spillway Elev Crest Length Left Right Bottom <br />(ft) Sideslope Sideslope Width (ft) <br />6,776.60 25.00 3.00:1 3.00:1 10.00 <br />Drop Inlet <br />Riser Barrel <br />Riser Height Barrel Barrel Slope ' Spillway Elev <br />Diameter (ft) Diameter Length (ft) ( %) Manning 's n (ft) <br />(in) (in) <br />24.00 1.00 24.00 60.00 1.00 0.0150 6,775.50 <br />Pond Results: <br />Peak Elevation: <br />H'graph Detention Time: <br />6,775.77 ft <br />2.27 hrs <br />Pond Model: <br />CSTRS <br />Dewater Time: <br />0.41 days <br />Trap Efficiency: <br />0.00% <br />Dewatering time is calculated from peak stage to lowest spillway <br />Elevation - Capacity- Discharge Table <br />Elevation <br />Area <br />(ac) <br />Capacity <br />(ac -ft) <br />Discharge Dewater <br />Time <br />(cfs) (hrs) <br />6,752.10 <br />0.095 <br />0.000 <br />0.000 Top of Sed. Storage <br />6,752.20 <br />0.099 <br />0.010 <br />0.000 <br />6,752.70 <br />0.124 <br />0.065 <br />0.000 <br />6,753.20 <br />0.151 <br />0.134 <br />0.000 <br />6,753.70 <br />0.181 <br />0.217 <br />0.000 <br />6,754.00 <br />0.200 <br />0.274 <br />0.000 <br />6,754.20 <br />0.211 <br />0.315 <br />0.000 <br />6,754.70 <br />0.239 <br />0.428 <br />0.000 <br />6,755.20 <br />0.269 <br />0.554 <br />0.000 <br />6,755.70 <br />0.300 <br />0.697 <br />0.000 <br />6,756.00 <br />0.320 <br />0.790 <br />0.000 <br />6,756.20 <br />0.330 <br />0.855 <br />0.000 <br />6,756.70 <br />0.357 <br />1.027 <br />0.000 <br />6,757.20 <br />0.384 <br />1.212 <br />0.000 <br />Filename: Lower Sump 10yr ver2.sc4 <br />gel <br />Printed 04 -06 -2012 <br />