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KENNECOTTENERGYCORPORATION <br />COLOWYO MINE <br />• 004A - Gulch A Watershed SEDCAD Model Input <br />Structure 1, Subwatershed 1 (S1-SWS1) <br />Disturbance: <br />Topsoil & Seeded: 0 acres <br />1-2 Year Reclamation: 0 acres <br />3+ Year Reclamation: 86.31 acres <br />Undisturbed: 4.54 acres <br />Total Subwatershed Area: 90.85 acres <br />Hydrology: <br />Time of Concentration: <br />Elevation Length <br />150 1850 <br />85 950 <br />65 1675 <br /> Curve Number: <br />• Sediment: <br />Rainfall Factor: <br /> <br /> Soil Erodibility Factor: <br /> Length-Slope Factor.' <br /> Elevation <br /> 135 <br /> 200 <br />Average <br />167.5 <br />Control Factor: <br />Practice Factor.' <br />Length <br />1850 <br />1000 <br />1425 <br />Description <br />Upland <br />Grassed Waterway <br />Diversion <br />56 <br />19 <br />0.28 <br />Slope <br />7.3% <br />20.0% <br />13.6% <br />0.01 <br />0.41 <br />i• <br />