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0 <br />Table 7 -23C -2 <br />Little Collom (LCX -DS) Pond <br />10 -Year Results <br />Flow Summar <br />Peak Discharge In <br />135.0 cfs <br />Peak Discharge Out <br />3.9 cfs <br />Runoff Volume In <br />17.6 ac -ft <br />Runoff Volume Out <br />10.0 ac -ft * ** <br />Peak Elevation <br />6640.6 ft <br />Dewatering Time <br />3.2 days <br />Sediment Storage Summar <br />Sediment Storage Elev. <br />6629.88 ft <br />Storage Capacity @ 6629.88 <br />1.57 ac -ft <br />Initial Pool Elev. <br />6630 ft <br />Dead Space <br />20% <br />Trap Efficiency <br />74.0% <br />• <br />• <br />* ** Runoff Volume does not reflect the entire duration of the hydrograph. SEDCAD4 only measures the <br />first 50 hours. Pond dewaters fully in 3.2 days. <br />Table 7 -23C -3 <br />Little Collom (LCX -DS) Pond (Without Riser) <br />25 -Year Spillway Design Flood Results <br />Flow Summar <br />Peak Discharge In 309.0 cfs <br />Peak Discharge Out 175.0 cfs <br />Runoff Volume In 70.6 ac -ft <br />Runoff Volume Out 70.6 ac -ft <br />Peak Elevation 6643.7 <br />Dewatering Time 0.5 days <br />Exh. 7 -23C -3 Revision Date: 12/15/10 <br />Revision No.: PR -03 <br />