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KENNECOTT ENERGY CORPORATION <br />COLOWYO MINE <br />001A -Streeter 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: 38.27 acres <br /> Undisturbed: 23.27 acres <br /> Total Subwatershed Area: 61 ~4 acres <br /> Hydrology: <br /> Time of Concentration: <br /> Elevation Length Description <br /> 25 500 Upland <br /> 105 1300 Grassed Channel <br /> 40 2300 Channelw/Baseflow <br /> Curve Number: 53 <br /> Sediment: <br />Rainfall Factor: <br />19 <br /> <br /> Soi! Erodibility Factor.' 0.28 <br /> Length-Slope Factor: <br /> Elevation Length Slope <br /> 25 450 5.6% <br /> 100 750 13.3°./0 <br />Average <br />63 600 9.4:% <br />Control Factor. 0.03 <br />Practice Factor. 0.58 <br />• <br />