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SEDCAD 4 for Windows <br />A <br />Structure #2 (Pond) <br />Pond NHN-003 <br />Pond Inputs: <br />Structure Detail; <br />Initial Pool Elev: <br />5,686.00 ft <br />Initial Pool: <br />0.13 ac -ft <br />*Sediment Storage: <br />0.75 ac -ft <br />Dead Space: <br />20.00% <br />*Sediment capacity based on Average Annual R of 27 o for 3 year(s) <br />Emergency Spillway <br />Spillway Elev Crest Length Left Right Bottom <br />(ft) Sideslope Sideslope Width (ft) <br />5,693.50 18.00 2.00:1 2.00:1 10.00 <br />Enhanced Perf. Riser <br />Riser <br />Riser Height <br />Diameter (in) <br />Barrel <br />Barrel Length Barrel Slope <br />Diameter (in) <br />Number of <br />Spillway Elev <br />Mannings n Holes per <br />(ft) <br />(ft) (%) <br />(ft) <br />Elev <br />180.00 5.50 <br />18.00 100.00 2.00 <br />0.0150 5,691.00 2 <br />Pond Results: <br />Peak Elevation: <br />5,688.93 ft <br />H'graph Detention Time: <br />9.26 hrs <br />Pond Model: <br />CSTRS <br />Dewater Time: <br />1.10 days <br />Trap Efficiency: <br />64.61% <br />Dewatering time is calculated from peak stage to lowest spillway <br />Elevation -Capacity -Discharge Table <br />Filename: Pond NHN-003 DESIGN 10YR EVENT 02.14.17.sc4 Printed 02-14-2017 <br />Area <br />Capacity <br />Discharge <br />Dewater <br />Elevation <br />Time <br />(ac) <br />(ac -ft) <br />(cfs) <br />(hrs) <br />5,685.86 <br />0.931 <br />0.000 <br />0.000 <br />Top of Sed. Storage <br />5,686.00 <br />0.953 <br />0.131 <br />0.000 <br />Low hole SPW #2 <br />5,686.50 <br />0.980 <br />0.614 <br />0.961 <br />6.08* <br />5,687.00 <br />1.007 <br />1.111 <br />1.665 <br />4.70 <br />5,687.50 <br />1.035 <br />1.622 <br />2.149 <br />3.25 <br />5,688.00 <br />1.064 <br />2.146 <br />2.543 <br />2.75 <br />Filename: Pond NHN-003 DESIGN 10YR EVENT 02.14.17.sc4 Printed 02-14-2017 <br />