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SWS6 <br />• 20 MILE COAL CO YOAST MINE -POND D <br />HYDROLOGIC INPUT PARAMETERS <br />WATERSHED ID: SEDCAD 4 <br />WATERSHED ID <br />Pond D -SWS6 Structure 1 -SWS6 <br />Watershed Area <br />11.0 acres <br />Curve Number: <br />WATERSHED <br />TYPE VEGETATION <br />COVER HYDROLOGIC <br />SOIL GROUP CURVE <br />NUMBER AREA <br />(acres) <br />Disturbed-mining None C 90 11.0 <br />Total 11.0 <br />WEIGHTED CURVE NUMBER: 90 <br />Soll Erotlibiliry Factor (K): <br />• <br />SOIL ERODIBILITY FACTOR <br />SOIL <br />TYPE AREA <br />(acres) K <br />FACTOR K'AREA <br />Average Soil 11 0.25 2.75 <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 />Disturbed 11.0 1 N <br />total 1t0 71000 <br />Weighted C Factor : 1.000 <br />D-36 <br />