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Trapezoidal ChanneJ. Analysie & Design <br /> Open Channel - Uniform flow <br /> Worksheet �ame: WATER QUALITY SWALE <br /> Comment: Determine average Velocity <br /> Solve For Depth <br /> Given �nput Uata: <br /> Bottom Width. . . . . 1 .00 ft <br /> Left Side Slope. . 3 .00 :1 (H:V) <br /> Right Side Slope. 3 .00 : 1 (H:V) <br /> Manning' s n. . . . . . 0.20U <br /> Channel Slope . . . . 0. 0050 ft/ft <br /> Discharge. . . . . . . . 0 .11 cfs <br /> Computed Results : <br /> �epth. . . . . . . . . . . . 0 . 31 ft <br /> �elocity. . . . . . . . . 0 . 18 fps <br /> Flow Area. . . . . . . . 0. 61 sf <br /> Flow Top Width. . . 2 . 87 ft � <br /> Wetted Perimeter. 2 . 98 ft <br /> Critical Depth. . . 0. 07 ft <br /> Critical Slope . . . 1 . 5420 ft/ft <br /> Froude Number. . . . 0 . 07 (flow is Subcritical) <br /> r <br /> Open Channnl Flow Module, Version 3 . 21 (c) 1990 <br /> Haestad Methods, Inc . * 37 Brookside Rd * Waterbury, Ct 06708 <br />