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SEDCAD 4 for Windows <br />f'nnvrinh} 1 OCIA _9007 P -10 I Crh�.roh <br />Structure #3 (P ond <br />Sediment Pond <br />Pond Inputs: <br />Initial Pool Elev: <br />Stability <br />Class D w/o <br />Freeboard <br />Stability <br />Class D w/ <br />Freeboard <br />Capacity <br />Class B w/o <br />Freeboard <br />Capacity <br />Class B w/ <br />Freeboard <br />Design Discharge: <br />11.14 cfs <br />20.00% <br />11.14 cfs <br />80.84% <br />Depth: <br />1.16 ft <br />1.46 ft <br />1.74 ft <br />2.04 ft <br />Top Width: <br />6.97 ft <br />8.77 ft <br />10.41 ft <br />12.21 ft <br />Velocity: <br />2.76 fps <br />1.23 fps <br />X- Section Area: <br />4.04 sq ft <br />9.03 sq ft <br />Hydraulic Radius: <br />0.551 ft <br />0.823 ft <br />Froude Number: <br />0.64 <br />0.23 <br />Roug hness Coefficient: <br />0.0513 <br />0.1 500 <br />Structure #3 (P ond <br />Sediment Pond <br />Pond Inputs: <br />Initial Pool Elev: <br />5,392.00 ft <br />Initial Pool: <br />0: ac -ft <br />*Sediment Storage: <br />0.11 ac -ft <br />Dead Space: <br />20.00% <br />*Sediment capacity based on A verage Annual R of 20.0 for 1 year(s) <br />Perforated Riser <br />Riser <br />Diameter Riser Height <br />Barrel <br />Diameter Barrel Barrel Slope <br />Number of <br />Mannin s n Spillway Elev Holes <br />9 per <br />(ft) <br />(in) <br />Length (ft) ( %) <br />(in) <br />(ft) Elevp <br />24.00 3.00 <br />24.00 69.00 2.00 <br />0.0140 5,394.00 4 <br />Pond Results: <br />Peak Elevation: <br />5,393.57 ft <br />H'graph Detention Time: <br />13.89 hrs <br />Pond Model: <br />CSTRS <br />Dewater Time: <br />2.53 days <br />Trap Efficiency: <br />80.84% <br />Dewatering time is calculated from peak stage to lowest spillway <br />Elevation - Capacity - Discharge Table <br />1 <br />Filename: Sediment Pond Design.sc4 Printed 11 -25 -2009 <br />