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Open Channel Calculation - Trape2oidal 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 ' DEEP & 10' TOP <br /> n VALUR i 0.030 <br /> s (SLOPE) : 0.0100 <br /> a/c (RATIO TO 1 ) : 5.00 <br /> DEPTH: 1.00 Ft. <br /> BOTTOM WIDTH: 0.00 Ft. <br /> Top Width: 10.00 Ft. <br /> -----------------Area: <br /> ----------------5.00-Sq.-Ft------------------- <br /> Wetted Parimater: 10.20 Ft. <br /> Hydraulic Radius: O.4903 <br /> R' (2/3) : 0.6218 <br /> Velocity: 3.0798 fps <br /> Flow Quantity : 15.3990 cfs <br /> ZC-) <br />