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• <br />DIVERSION DITCH DD-4 <br />Receives flow from DD-3 and drainage along ''ounty idoactL3'r' <br />Limiting Velocity - 5.0 ft./sec. <br />Slope - lJ <br />Mannings n - .032 <br />R = n) .0)1 = .0 2) = 1.07 <br />1.5 s)~ 1.5 d <br />Assume depth of 1.30 feet <br />~ /. - <br />;. <br />i 3u <br />CJ <br />Q = 1.49 (R)2/3(S)1/z A <br />n <br />= 1.49 (67)z/3(.ol)'S(2.95) <br />.o3z <br />= 10 cfs Adequate <br />• <br />