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SEDCAD 4 for Windows <br />40 <br />Pond Results: <br />Peak Elevation: <br />6,777.21 ft <br />H'graph Detention Time: <br />7.56 hrs <br />Pond Model: <br />CSTRS <br />Dewater Time: <br />0.76 days <br />Trap Efficiency: <br />97.69% <br />Dewatenng 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 <br />(cfs) <br />Dewater <br />Time <br />(hrs) <br />Straight Pipe <br />6,774.90 <br />1.877 <br />0.000 <br />0.000 <br />Spillway cfs <br />P Y ( ) <br />Top of Sed. Storage <br />6,775.40 <br />1.959 <br />0.959 <br />0.000 <br />6,774.90 <br />0.000 <br />6,775.90 <br />2.043 <br />1.959 <br />0.000 <br />0.000 <br />0.000 <br />6,776.00 <br />2.060 <br />2.165 <br />0.000 <br />6,776.00 <br />0.000 <br />6,776.40 <br />2.120 <br />3.000 <br />0.000 <br />0.000 <br />0.000 <br />6,776.60 <br />2.150 <br />3.428 <br />0.000 <br />Spillway #1 <br />6,776.90 <br />2.194 <br />4.079 <br />0.695 <br />11.33* <br />6,777.21 <br />2.241 <br />4.770 <br />2.121 <br />6.80 <br />Peak Stage <br />6,777.40 <br />2.269 <br />5.195 <br />2.998 <br />6,777.80 <br />2.330 <br />6.114 <br />5.506 <br />Spillway #2 <br />6,777.90 <br />2.345 <br />6.348 <br />6.793 <br />6,778.00 <br />2.360 <br />6.584 <br />8.104 <br />6,778.40 <br />2.397 <br />7.535 <br />13.599 <br />6,778.90 <br />2.445 <br />8.745 <br />46.655 <br />6,779.40 <br />2.492 <br />9.979 <br />86.234 <br />6,779.90 <br />2.540 <br />11.238 <br />137.577 <br />6,780.00 <br />2.550 <br />11.492 <br />149.693 <br />*Designates time(s) to dewater have been extrapolated beyond the 50 hour hydrograph limit. <br />Detailed Discharge Table <br />Filename: Lower Sump 10yr,24hr.sc4 Printed 02 -04 -2011 <br />Combined <br />Elevation (ft) <br />Straight Pipe <br />Emergency <br />Total <br />cfs <br />(cfs) <br />Spillway cfs <br />P Y ( ) <br />Discharge <br />(cfs) <br />6,774.90 <br />0.000 <br />0.000 <br />0.000 <br />6,775.40 <br />0.000 <br />0.000 <br />0.000 <br />6,775.90 <br />0.000 <br />0.000 <br />0.000 <br />6,776.00 <br />0.000 <br />0.000 <br />0.000 <br />6,776.40 <br />0.000 <br />0.000 <br />0.000 <br />Filename: Lower Sump 10yr,24hr.sc4 Printed 02 -04 -2011 <br />