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APPENDIX 2.05.3-11B <br />• SOUTHERN DIVERSION DITCH - BACKFILLED AREA <br />SUN COAL COMPANY - MEADOWS N0. 1 <br />ROUTT COUNTY, COLORADO <br />As-Built Design (refer to Map 19) <br />Ditch: .Triangular <br />Sideslopes: 2:1 <br />Relief: 7390-7340 <br />Diversion Length = 850' <br />Slope: $5~ _ .06 or 6~ <br />Roughness Coefficient (n1 = .020 - rough rubble <br />Top Width: 6 feet <br />Depth: 3 feet <br />Q10 = 1.6 inch <br />• CN = 80 Runoff = .34 inch/per inch runoff <br />Drainage Area = 5 acres <br />Steep Slope = 716 <br />Unadjusted Peak = 9.5 cfs <br />Q10 - 24-hour storm = 3.2 cfs <br />Velocity 10-year storm = 6.8 fps <br />Flow Depth = .484 <br /> <br />- 311 - (Rev. 5/86) <br />