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Open Channel Calculation - Trapezoidal Design <br /> Project: HARNEY LANE LANDFILL <br /> DESCRIPTION: CLOSURE DRAINAGE CALCULATIONS <br /> CALLS. ARE BASED ON MANNINGS FORMULA <br /> Notes: FIND CAPACITY OF V-DITCH . 75 DEEP & 61 TOP <br /> n VALUE: 0. 030 <br /> s (SLOPE) : 0. 0020 <br /> s/s (RATIO TO 1 ) : 4. 00 <br /> DEPTH: 0. 75 Ft. <br /> BOTTOM WIDTH: 0. 00 Ft. <br /> Top Width: 6. 00 Ft. <br /> -------------------------------------------------------------------- <br /> Area: 2. 25 Sq. Ft. <br /> Wetted Perimeter: 6. 18 Ft. <br /> Hydraulic Radius: 0. 3638 <br /> R'`(2/3) : 0.5096 <br /> Velocity: 1 . 1289 fps <br /> Flow Quantity: 2.5399 cfs <br /> 2q- <br />