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KENNECOTT ENERGY CORPORATION <br />COLOWYO MINE <br />. O07A -Prospect Watershed SEDCAD Model Input <br />Structure 2, Subwatershed 1 (S2-SWS1) <br />Disturbance: <br />Topsoil & Seeded: 0 acres <br />1-2 Year Reclamation: 12.36 acres <br />3+ Year Reclamation: 26.84 acres <br />Undisturbed: 93.25 acres <br />Total Subwafershed Area: 132.45 acres <br /> Hydrology: <br /> Time of Concentration: <br /> Elevation Length Description <br /> 70 650 Upland <br /> 180 1000 Grassed Waterway <br /> 175 850 Diversion <br /> 125 3875 Diversion <br /> Curve Number. 50 <br />• Sediment: <br />Rainfall Factor <br />' <br />19 <br /> . <br /> Soil Erodibility Factor: 0.28 <br /> Length-Slope Factor.' <br /> Elevation Length Slope <br /> 100 1000 10.0% <br /> 350 1875 18.7% <br /> 55 500 11.0% <br /> 250 1050 23.8% <br />Average <br />188.8 1106.3 15.9% <br />Control Factor.' 0.06 <br />Practice Factor: 0.75 <br />/ , <br />J <br />