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Open Channel Calculation - Trapeaoidal Design <br /> Project: HARNEY LANE LANDFILL ' <br /> DESCRIPTION: CLOSURE DRAINAGE CALCULATIONS <br /> CALCS. ARE BASED ON MANNINGS FORMULA <br /> Notes: CAPACITY OF A V-DITCH 1 ° DEEP 10° TOP <br /> n VALUE: 0.030 <br /> s (SLOPE) : 0.0010 <br /> a/c (RATIO TO 1 ) : 4.55 <br /> DEPTH: 1 . 10 Ft. <br /> BOTTOM WIDTH; 0.00 Ft. <br /> Top Width: 10.01 Ft. <br /> -------------------------------------------------------------------- <br /> Area: 5.51 Sq. Ft. <br /> Wetted Perimeter: 10.25 Ft. <br /> Hydraulic Radius: 0.5372 <br /> R' (2/3) : 0.6608 <br /> Velocity: 1 .0351 fps <br /> Flow Quantity: 5.6986 cfs <br /> 22 <br />