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SEDCAD 4 for Windows <br />Rnrnirinh4 1008 AMl1 P�mch I Ghuioh <br />Structure #2 (Pond) <br />Pond NHN-003 <br />Pond Inputs: <br />Structure Detail; <br />Initial Pool Elev: <br />5,691.00 ft <br />Initial Pool: <br />5.63 ac -ft <br />*Sediment Storage: <br />0.72 ac -ft <br />Dead Space: <br />20.00% <br />*Sediment capacity based on Average Annual R of 27.0 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 />Diameter (in) Riser Height <br />Barrel <br />Diameter (in) Barrel Length Barrel Slope <br />Number of <br />Manning's n Spillway Elev Holes per <br />(ft) <br />(ft) (/o) <br />(ft) 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 />5,692.64 ft <br />H'graph Detention Time: <br />0.75 hrs <br />Pond Model: <br />CSTRS <br />Dewater Time: <br />0.59 days <br />Trap Efficiency: <br />71.94% <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 />5,685.83 <br />0.926 <br />0.000 <br />0.000 Top of Sed. Storage <br />5,686.00 <br />0.953 <br />0.163 <br />0.000 <br />5,686.50 <br />0.980 <br />0.646 <br />0.000 <br />5,687.00 <br />1.007 <br />1.143 <br />0.000 <br />5,687.50 <br />1.035 <br />1.654 <br />0.000 <br />5,688.00 <br />1.064 <br />2.179 <br />0.000 <br />0 <br />Filename: Pond NHN-003 DESIGN 25YR EVENT_02.14.17.sc4 Printed 02-14-2017 <br />