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SEDCAD 4 for Windows <br />f-- ... nhf 100R -9O10 P-1. I Srh...uah <br />O <br />Structure Detail; <br />Structure #2 (Pond) <br />Pond NHN-001 <br />Pond Inputs: <br />Initial Pool Elev: 5,671.50 ft <br />Initial Pool: 1.30 ac -ft <br />*Sediment Storage: 1.96 ac -ft <br />Dead Space: 20.00% <br />*Sediment capacity based on A verage Annual R of 27.0 for 5 year(s) <br />Drop Inlet <br />Riser <br />Riser Height <br />Barrel <br />Barrel Barrel SlopeSpillway <br />Elev <br />Diameter (ft) <br />Diameter Length (ft) (%) <br />Manning's n (ft) <br />(in) <br />(in) <br />Elev <br />72.00 6.25 24.00 106.40 5.60 <br />0.0240 5,676.50 <br />Enhanced Perf. Riser <br />Riser <br />Riser Height <br />Barrel <br />Number of <br />Barrel Barrel Slope Spillway Elev <br />Diameter (ft) <br />Diameter <br />Length (ft) (%) Manning's n (ft) Holes per <br />(in) <br />(in) <br />Elev <br />18.00 4.75 <br />24.00 <br />173.00 2.70 0.0240 5,675.50 2 <br />Pond Results: <br />Peak Elevation: <br />H'graph Detention Time: <br />5,674.35 ft <br />9.37 hrs <br />Pond Model: <br />CSTRS <br />Dewater Time: <br />2.03 days <br />Trap Efficiency: <br />68.11 % <br />Dewatering time is calculated from peak stage to lowest spillway <br />Elevation -Capacity -Discharge Table <br />Filename: Pond NHN-001 AS -BUILT 10YR EVENT_12.18.18.sc4 Printed 12-18-2018 <br />Appendix 2.05.3(4)-6 Page 17 December 2018 (TR -19) <br />Area <br />Capacity <br />Discharge Dewater <br />Elevation <br />Time <br />(ac) <br />(ac -ft) <br />(cfs) (hrs) <br />5,670.02 <br />0.802 <br />0.000 <br />0.000 Top of Sed. Storage <br />5,670.25 <br />0.824 <br />0.188 <br />0.000 <br />5,670.50 <br />0.849 <br />0.397 <br />0.000 <br />5,670.75 <br />0.874 <br />0.612 <br />0.000 <br />Filename: Pond NHN-001 AS -BUILT 10YR EVENT_12.18.18.sc4 Printed 12-18-2018 <br />Appendix 2.05.3(4)-6 Page 17 December 2018 (TR -19) <br />