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• 8. Pond & swap adjustment factor,...Fp = 0.75 <br />9. Peak Discharge,gp ...............cfs = 65.7668 <br />DITCH C20 <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: 10.00 <br />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 />• REVISED MARCH2O06 Attachment 2.05.3(3)-1-43 <br />