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KENNECOTT ENERGY CORPORATION <br />COLOWYO MINE <br />• 004A - Gulch A Watershed SEDCAD Model Input <br /> Structure 3, Subwatershed 2 (S3-SWS2) <br /> Disturbance: <br /> Topsoil & Seeded: 0 acres <br /> 1-2 Year Reclamation: 0 acres <br /> 3+ Year Reclamation: 90.96 acres <br /> Undisturbed: 24.13 acres <br /> Total Subwatershed Area: 115.09 acres <br /> Hydrology: <br /> Time of Concentration: <br /> Elevation Length Description <br /> 130 1750 Upland <br /> 95 775 Grassed Waterway <br /> 85 3675 Diversion <br /> Curve Number: 54 <br /> Sediment: <br />Rainfall Factor <br />19 <br /> <br /> Soil Erodibility Factor: 0.28 <br /> Length-Slope Factor: <br /> Elevation Length Slope <br /> 100 950 10.5% <br /> 230 1100 20.9% <br /> Average <br /> 165 1025 15.7% <br /> Control Factor.' 0.02 <br /> Practice Factor: 0.49 <br /> <br />