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• <br />• <br />• <br />6/17/96 <br />Bowie No. 2 Mine <br />Coal Waste Bank <br />1.8-inch 10-Year, 24-Hour Storm Event <br />REACH SUMMARY <br />DITCH REACH ID No. D05 <br />Ditch Length: 579.00 ft Ditch Width: 0.00 ft <br />Side Slopel 2.00 Ditch Slope: 0.2800 ft/ft <br />Side Slopel 2.00 Contrib Bas: Asa <br />Mannings n :0.0250 Dn Invert 0.00 ft <br />Dn W.S. Elev:0.0000 Num Steps i0 <br />Trib Area: 3.80 Ac. Design Flow 3.30 cfs <br />Depth 0.40 ft Vel 10.09 fps <br />Upstream W.S. Elev; 0.00 ft. <br />DITCH REACH ID No. D06 <br />Ditch Length: 497.00 ft Ditch Width: 0.00 ft <br />Side Slopel 2.00 Ditch Slope: 0.2800 ft/ft <br />Side Slopel 2.00 Contrib Bas: A5b <br />Mannings n :0.0250 Dn Invert 0.00 ft <br />Dn W.S. Elev:0.0000 Num Steps 10 <br />Trib Area: 3.80 Ac. Design Flow 3.34 cfs <br />Depth 0.41 ft Vel 10.12 fps <br />Upstream W.S. Elev: 0.00 ft. <br />page 6 <br />wrquecx-ot <br />