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6. Watershed E <br />Drainage Area = 56 Ac <br />2 <br />{56 Ac)(im~~) - .088 mi? <br />Qio - 59.7 (.088)(•709) = to.7 cFs <br />Culvert Sizing <br />Q = to.7 CFS - D = 24"$ L.M. P, <br />Check, with D = 24"1, 4 = 11 LFS <br />HW = .9 - t.5o <br />D <br />7. Combined Watersheds F d X <br />Drainage Area ~ 540 Ac + 31 Ac = 571 Ac <br />2 <br />{571 Ac)(iSb-0 Ac) _ .892 mt? <br />Qta = 59.7 (.892)(•7x9) = 55•t CFS <br />Culvert Sizing <br />Q ° 55.1 CFS - D.= 42"$ C.H.P. <br />Check, with D s 42"$, Q = 6o GFS <br />HW = i.t - 1.50 <br />D <br />$. Watershed F <br />Drainage Area ~ 540 Ac <br />2 <br />{54D Ac)(in`~~) _ :844 mi? <br />Qio = 59.7 (.844)('7d~) = 52.9 CFS <br />Culvert Sizing <br />Q ° 52.9 CFS D = 42"$ G.M.P. <br />Check, with D = 42"$, Q = 60 GFS <br />HW = t.t - 1.50 <br />D <br />• <br />If ~ <br />