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Minimum Spillway Requirements <br />• Worksheet for Trapezoidal Channel <br />Project Description <br />Project File c:lhaestadlfmw195266.fm2 <br />Worksheet Bowie No.2 Mine Sed Pond Spillway 6/11 <br />Flow Element Trapezoidal Channel <br />Method Manning's Formula <br />Solve For Bottom Width <br />Input Data <br />Mannings Coefficient 0.040 <br />Channel Slope 1.0 <br />Depth 1.00 tt <br />Left Side Slope 2.0 H : V <br />Right Side Slope 2.0 H : V <br />Discharge 7.760 cfs <br />Results <br />Bottom Width 0.48 ft <br />Flow Area 2.48 ft' <br />Wetted Perimeter 4.96 ft <br />• Top Width 4.48 ft <br />Critical Depth 0.87 ft <br />Critical Slope 0.018968 ft/ft <br />Velocity 3.12 fUs <br />Velocity Head 0.15 ft <br />Specific Energy 1.15 ft <br />Froude Number 0.74 <br />Flow is subcritical. <br />• wrqu~cr-or <br />~iy~96 FlowMasler X5.11 <br />OA:20:13 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06'708 (203) 755.1666 Page 1 or 1 <br />