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SEDCAD 4 for Windows <br />• <br />Structure #1 (Ponce <br />Pond 12 <br />Pond Inputs: <br />Structure Detai/: <br />Initial Pool Elev: 7,251.00 <br />Initial Pool: 3.74 ac-R <br />*sediment Storage: 9.32 ac-R <br />Dead Space: 20.00 <br />*Sediment capacity based on Average Annual R of 10.0 for 2 year(s) <br />Perforated Riser <br />Riser Riser Height Barrel Barrel Barrel Slope Number of <br />' <br />Diameter Diameter Manning <br />s n Spillway Elev Holes per <br />(R) <br />(in) Length (ft) (%) <br />(in) Elev <br />30.00 5.00 24.00 102.00 5.00 0.0240 7,253.00 3 <br />Emergency Spillway <br />Spillway Elev Crest Length Left Right Bottom <br />• (R) sideslope sideslope Width (ft) <br />7,257.00 50.00 3.00:1 3.00:1 15.00 <br />Pond Results: <br />Peak Elevation: 7,255.54 <br />H'graph Detention Time: 3.92 hrs <br />Pond Model: CSTRS <br />Dewater Tme: 2.25 days <br />Trap Efficiency: 62.74 <br />Dewatering time is ca/culated from peak stage to lowest spillway <br />Elevation-Capacity-Discharge Table <br />• <br /> <br />Elevation Area <br /> <br />(ac) Capacity <br /> <br />(ac-R) Discharge <br /> <br />(~s) Dewater <br />Time <br />(hm) <br />7,247.33 0.918 0.000 0.000 Top of Sed. storage <br />7,247.50 0.927 0.156 0.000 <br />7,248.00 0.953 0.626 0.000 <br />7,248.50 0.980 1.110 0.000 <br />7,249.00 1.007 1.607 0.000 <br />7,249.50 1.035 2.117 0.000 <br />Filename: Pond 12.sc4 Printed OS-06-2005 <br />