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<br />r~ <br />r~ <br />u <br />TR-42 <br />Seneca II Mine <br />Pond 004 <br />HYDROLOGIC INPUT PARAMETERS <br /> SEDCAD 4 <br /> WATERSHED ID <br /> Structure 6 - SWS1 <br /> Subwatershed -Channel PM-12A <br />Watershed Area: <br />13.2 <br />Curve Number: <br /> HYDROLOGIC CURVE AREA <br />WATERSHED TYPE GROUND COVER SOIL GROUP NUMBER (acres) <br />Reclaim >3 years Good (>70%) B 62 13.20 <br />Total 13.2 <br /> CURVE NUMBER 62 <br /> SEDCAD 4 <br /> WATERSHED ID <br /> Structure 6 - SWS2 <br /> Subwatershed -Channel PM-12 Upper <br />Watershed Area: <br />67.8 <br />Curve Number: <br /> HYDROLOGIC CURVE AREA <br />WATERSHED TYPE GROUND COVER SOIL GROUP NUMBER (acres) <br />Reclaim >3 years Good (>70%) B 62 64.11 <br />Sagebrush Fair D 70 3.73 <br />Total 67.8 <br /> CURVE NUMBER 62 <br />Approved Seneca II Mine curve number (CN) values are presented in Appendix 7-12, Postiming Drainage <br />Control. Values were adapted from Urban Hydrology for Small Watersheds, Technical Release No. 55 (TR- <br />55), Soil Conservation Service, 7986. <br />7-6c.1A-23 <br />Revised 09/07 <br />