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KENNECOTT ENERGY CORPORATION <br />COLOWYO MINE <br />• 004A - Gulch A Watershed SEDCAD Model Input <br />Structure 2, Subwatershed 1 (S2-SWS1) <br />Disturbance: <br />Topsoil 8 Seeded: 36.39 acres <br />1-2 Year Reclamation: 46.21 acres <br />3+ Year Reclamation: 221.03 acres <br />Undisturbed: 0 acres <br />Total Subwatershed Area: 303.63 acres <br />Hydrology: <br />Time of Concentration: <br />Elevation Length <br />35 550 <br />85 2750 <br />40 625 <br />300 3500 <br />Description <br />Upland <br />Grassed Waterway <br />Channelw/Baseflow <br />Channel wlBaseflow <br /> Curve Number: <br />• Sediment: <br />Rainfall Factor: <br /> <br /> Soil Erodibility Factor.' <br /> Length-Slope Factor: <br /> Elevation <br /> 70 <br /> 145 <br /> 275 <br />Average <br />163.3 <br />Control Factor: <br />Practice Factor: <br />60 <br />19 <br />0.28 <br />Length <br />2250 <br />1850 <br />2900 <br />Slope <br />3.1% <br />7.8% <br />9.5% <br />2333.3 <br />6.8% <br />0.11 <br />0.38 <br />• <br />