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.~ Assume 1% slope (shallowest in area) <br />Highest flow = 1122 gpm <br />= 2.5 cfs <br />Required cross-section area <br />2.5 cfs = 2.5 sq, ft. <br />1 fps <br />~ 2.5 5 ft. <br />--- 1--$-'-- _ .25 deep w/straight wall <br />All ditches in area are at least one foot deep. <br /> <br />• <br />M133 <br /> <br /> <br />