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Open Channel Calculation - Trapeaoidal Design <br /> Project: HARNEY LANE LANDFILL <br /> DESCRIPTION: CLOSURE DRAINAGE CALCULATIONS <br /> CALLS. ARE BASED ON MANNINGS FORMULA <br /> Notes: CAPACITY OF V-DITCH 1.51 DEEP & 121 TOP <br /> n VALUE: 0.030 <br /> s (SLOPE) : 0.0030 <br /> a/c (RATIO TO 1 ) : 4.00 <br /> DEPTH: 1.50 Ft. <br /> BOTTOM WIDTH: 0.00 Ft. <br /> Top Width: 12.00 Ft. <br /> ----------------- ---------------- S . <br /> --- ------------------ <br /> Area: <br /> Wetted Perimeter: 12.37 Ft. <br /> Hydraulic Radius: 0.7276 <br /> R" (2/3) : 0.8090 <br /> Velocity: 2.1947 fps <br /> Flow Quantity: 19.7527 cf s <br /> 33 <br />