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NewFields <br /> Newmont <br /> VLF/OSA Closure Study <br /> East Cresson OSA Stormwater Diversion Channel <br /> 500yr Hec-HMS Results <br /> Peak Discharge Volume (acre- <br /> Hydraulic Element Drainage Area (MiZ) (ft3/s) ft) <br /> Northeastl 0.1976 377.3 27.4 <br /> Northeastl 0.0744 173.7 10.3 <br /> Channel 1 outlet 0.272 550.3 37.7 <br /> East1 0.1758 278.8 24.4 <br /> East2 0.0395 62.2 4.6 <br /> Channel 2 outlet 0.2153 332 29 <br /> Grassy Creek 0.4873 823.8 66.7 <br /> Southwest 0.1543 199.4 19.2 <br /> South 0.0454 81.4 5.9 <br /> Haul Road 0.1997 262.6 25.2 <br /> West1 0.0868 135.4 11.9 <br /> West2 0.0274 64.6 3.9 <br /> SGOSA 0.1142 177.2 15.8 <br /> North1 0.0556 108 7.8 <br /> G. H. Pit 0.0556 108 7.8 <br /> Contributing Design Storm Peak Flow <br /> Structure <br /> Subbasin/Elements Event (ft3/s) <br /> Channel 1 sta 0+00.00 to 28+11.40 Northeastl 500yr, 24hr 377.3 <br /> Channel 1 sta 28+11.40 to outlet Northeastl, Northeast2 500yr, 24hr 550.3 <br /> Channel 2 sta 0+00.00 to 21+51.20 East2 500yr, 24hr 62.2 <br /> Channel 2 sta 21+51.00 to outlet East1, East2 500yr, 24hr 332.0 <br /> channel 3 South 500yr, 24hr 81.4 <br /> channel 4 Southwest 500yr, 24hr 199.4 <br /> channel 5 West1 500yr, 24hr 135.4 <br /> channel 6 West2 500yr, 24hr 64.6 <br /> channel 7 North1 500yr, 24hr 108.0 <br /> channel 8 North2 500yr, 24hr 108.0 <br />