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Wetted Perimeter: 14.06 <br />Area of Wetted Cross Section: 10.72 <br />Discharge: 65.80 cfs <br />Depth of Flow: 0.91 feet <br />Velocity: 6.14 fps <br />Channel Lining: GRASS <br />Freeboard: 0.30 feet <br />DITCH C21 <br />Time of Concentration (SCS Method) <br />Curve Number: 80 <br />Length of Flow (ft): 861.37 <br />Average Land Slope (percent): 2.5 <br />Time of Concentration (hrs): 0.30 <br />DITCH C21 <br />Graphical Peak Discharge <br />Project: NUCLA MINE <br />By: GL Date: 02/17/06 <br />Location: DITCH C21 <br />Checked: Date: <br />Developed <br />1. Data: <br />Drainage area: .................... <br />A = 2.8000 Acres <br />Runoff Curve Number: ............. <br />CN = 80 <br />Time of Concentration: <br />........... Tc = 0.30 <br />Storm Type: ....................... <br />=11 <br />Pond and swamp areas spread <br />throughout watershed ............... <br />= 0.00 percent of A <br />0.0000 Acres <br />Revised August 2009(PB06) Attachment 2.05.3(3) -1 -36 <br />