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<br />DITCH B-D <br />Runoff storage volume and peak discharge <br />Hydrologic inputs and results are shown on SEDCAD+ computer <br />printouts <br />Runoff volume (10-year, 24-hour): 1742 CU-FT <br />Peak Discharge (10-year, 24-hour): 0.44 CFS <br />Sediment Storage <br />Sedimentology inputs and results are shown on SEDCAD+ computer <br />printouts <br />Storm sediment yield: <br />3-year sediment volume <br />= 13.2 tons <br />= 600 CU-FT <br />Total required storage volume <br />1742 CU-FT (runoff + 600 CU-FT (Sediment) = 2342 CU-FT <br /> <br />Retention ditch capacity (200' long by 2.5' deep "V" ditch with 2H:IV <br />sideslopesj <br />2 x (2.5)Z x 200 = 2,500 CU-FT <br />• <br />