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O=AXV= <br />O REQUIRED -Peak Discharge <br />Riprap Sizing -Flume Outlet Channel <br />D50 =Size of Riprap <br />D50 = ((V X S^.17j/7.58))^2 <br />D50 =Diameter in feet <br />V =Velocity <br />S =Slope <br />55.26 CFS <br />51.17 CFS <br />D50 = 0.51 feet 6 inches Use 6" to 18" Rock <br />POND DEWATERING <br />USE A PUMP WITH A CAPACITY TO DEWATER IN 48-HOURS <br />App. B - 7i <br />POND F ' <br />----------------- <br />----------------- <br />AS-BUILT WATER VOLUME 3.48 Acre-Feet <br />VOLUME 1134113 Gallons <br />PUMP CAPACITY 394 GPM <br />PUMP SIZE 4" <br />Dewatering Time 2880.00 Minutes <br />48.00 Hours <br />2.00 Days <br />Pump capacity ~ 409 gpm with 60' head which includes head loss in pipe. <br />TR-4 y <br />~1PPRo~E9 <br />3~Zola7 <br />