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SEDCAD 4 for Windows <br />14 <br />Emergency Spillwax <br />Spillway Elev Crest Length Left Right Bottom <br />(ft) Sideslope Sideslope Width (ft) <br />7,172.00 25.00 2.00:1 2.00:1 40.00 <br />Perforated Riser <br />Riser <br />Riser Height <br />Barrel <br />Barrel Barrel Slope <br />Number of <br />Spillway Elev <br />Diameter (ft) <br />Diameter Length (ft) (%) <br />Mannings n (ft) Holes per <br />(in) <br />(in) <br />Elev <br />18.00 7.00 <br />18.00 163.00 2.10 <br />0.0240 7,170.00 2 <br />Pond Results: <br />Peak Elevation: <br />7,170.39 ft <br />H'graph Detention Time: <br />8.91 hrs <br />Pond Model: <br />CSTRS <br />Dewater Time: <br />2.03 days <br />Trap Efficiency: <br />73.07 <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 <br />(cfs) <br />Dewater <br />Time <br />(hrs) <br />7,155.00 <br />0.155 <br />0.000 <br />0.000 <br />Top of Sed. Storage <br />7,156.00 <br />0.179 <br />0.167 <br />0.000 <br />7,157.00 <br />0.205 <br />0.359 <br />0.000 <br />7,158.00 <br />0.232 <br />0.577 <br />0.000 <br />7,159.00 <br />0.261 <br />0.823 <br />0.000 <br />7,160.00 <br />0.292 <br />1.100 <br />0.000 <br />7,161.00 <br />0.325 <br />1.408 <br />0.000 <br />7,162.00 <br />0.359 <br />1.749 <br />0.000 <br />7,163.00 <br />0.395 <br />2.126 <br />0.000 <br />7,164.00 <br />0.433 <br />2.540 <br />0.000 <br />7,165.00 <br />0.473 <br />2.993 <br />0.000 <br />7,166.00 <br />0.514 <br />3.486 <br />0.000 <br />7,167.00 <br />0.557 <br />4.021 <br />0.000 <br />Low hole SPW #2 <br />7,168.00 <br />0.601 <br />4.600 <br />0.473 <br />14.81* <br />7,169.00 <br />0.637 <br />5.219 <br />0.669 <br />13.25 <br />7,170.00 <br />0.674 <br />5.874 <br />0.819 <br />10.70 <br />Spillway #2 <br />7,170.39 <br />0.704 <br />6.149 <br />3.827 <br />10.00 <br />Peak Stage <br />7,171.00 <br />0.733 <br />6.577 <br />8.509 <br />Filename: Rev3 PR04 Westside EOM 1024 sed.sc4 Printed 02-13-2016 <br />Exh. 7-23I-22 Revision Date: 2/15/2016 <br />Revision No.: PR -04 <br />