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KENNECOTT ENERGY CORPORATION <br />COLOWYO MINE <br /> 007A -Prospect Watershed SEDCAD Model Input <br /> Structure 5, Subwatershed 1 (S5-SWS1) <br /> Disturbance: <br /> Topsoil & Seeded: 0 acres <br /> 1-2 Year Reclamation: 0 acres <br /> 3+ Year Reclamation: 0 acres <br /> Undisturbed: 18.42 acres <br /> Total Subwatershed Area: 18.42 acres <br />Hydrology: <br />Time of Concentration: <br />Elevation Length Description <br />250 1325 Channel wlBaseflow <br />Curve Number 47 <br />Sediment: <br />Rainfall Factor: 19 <br />Soil Erodibility Factor: 0.28 <br />Length-Slope Factor: <br />Elevation Length Slope <br />180 400 45.0% <br />225 500 45.0% <br />Average <br />Z03 450 45.0% <br />Control Factor: 0.07 <br />Practice Factor: 0.90 <br />• <br />