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SWS1 <br />• 20 MILE COAL CO YOAST MINE -POND D <br />HYDROLOGIC INPUT PARAMETERS <br />WATERSHED ID: SEDCAD4 <br />WATERSHED ID <br />Pond D - SWSt Structure 1 -SWSt <br />Watershed Area: <br />177.4 acres <br />Curve Number: <br />WATERSHED <br />TYPE VEGETATION <br />COVER HYDROLOGIC <br />SOIL GROUP CURVE <br />NUMBER AREA <br />(acres) <br />Reclaimed Good (>70°6) C 74 177.4 <br />Total 177.4 <br />WEIGHTED CURVE NUMBER: 74 <br />Soil Erodibility Factor (K): <br /> <br />SOIL ERODIBILITY FACTOR <br />SOIL <br />TYPE AREA <br />(acres) K <br />FACTOR K'AREA <br />Average Soil 177.4 0.25 44.35 <br />Weighted K Factor: 0.25 <br />Control Factor: <br /> <br />CONTROL FACTOR <br />CONTROL PRACTICE <br />CONDITION AREA <br />(acres) C <br />FACTOR C-AREA <br />Reclaimed 174 4 0.01 7.744 <br />Total 174.4 1.744 <br />Weighted C Factor: 0.010 <br />D-31 <br />