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DITCH D109 <br />Channel Type: Trapezoidal, Equal Side Slopes <br />Dimensions: Left Side Slope 2.00:1 <br />Right Side Slope 2.00:1 <br />Base Dimension: 6.00 <br />Wetted Perimeter: 8.20 <br />Area of Wetted Cross Section: 3.44 <br />Discharge: 18.40 cfs <br />Depth of Flow: 0.49 feet <br />Velocity: 5.34 fps <br />Channel Lining: EARTH WITH GRASS <br />Freeboard: 0.30 feet <br />DITCH C28 <br />Time of Concentration (SCS Method) <br />Curve Number: 82 <br />Length of Flow: 438.79 ft <br />Average Land Slope: 9.44 % <br />Time of Concentration: 0.084 hrs, 5.0 mins <br />DITCH C28 <br />Graphical Peak Discharge <br />Project: NUCLA MINE <br />Location: DITCH C28 <br />Developed <br />Revised August 2009 (PR06) <br />By: BL Date: 17/15/09 <br />Checked: Date: <br />Attachment 2.05.3(3) -1 -53 <br />