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6eaN <br />• Design from Drawings <br />1. Pond volume <br />0.54 acre ft at Principal Spi]lway <br />0.89 acre ft at Emergency Spillway <br />2. Peak flow of Emergency Spillway <br />Q=A1n5R~S'i <br />_ ~n(1.25ft)z~ 1,5 4.909ft~ ~' <br />Q 2 (0.017)(1.963ft ) <br />z <br />Q =I (1z25ft)z~I01.01 ~1.963ft ~3 <br /> <br />(0.183)2 <br />z <br />Q = (2.454ft )(88,235)(1.160)(0.428) <br />Q = 107.5 cfs <br />• <br />1 5 ''-z <br />Q =A ~ R~' S <br />Q = (2ft x1.4ft) (0.017 )(4.Sft. ) (0.01)2 <br />Q = (2.Sftz)(88.235)(0.698)(0.1) <br />Q = 17.2 cfs <br />Summary <br />1. Pond Volume <br />Needs 0.30 acre ft for water <br />Needs 0.19 acre ft = 0.035 acre ft/acre x 5.49 acre <br />Needs 0.49 acre ft of total volume <br />Designed for 0.54 acre ft to Principal Spillway <br /> <br />