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I <br />Sediment Pond #2 Outlet Channel - Nat <br />Worksheet for Trapezoidal Channel <br />Project Description <br />0.05 <br />Project File <br />c:\ haestad \haestad\fmw \project1.fm2 <br />Worksheet <br />Sediment Pond #2 Natural Channel <br />Flow Element <br />Trapezoidal Channel <br />Method <br />Manning's Formula <br />Solve For <br />Channel Depth <br />Input Data <br />0.05 <br />Mannings Coefficient <br />0.022 Clean earth - conservative <br />Channel Slope <br />0.077000 ft/ft <br />Left Side Slope <br />5.000000 H: V <br />Right Side Slope <br />5.000000 H : V <br />Bottom Width <br />8.00 ft <br />Discharge <br />1.00 cfs <br />Results <br />Depth <br />0.05 <br />ft <br />Flow Area <br />0.41 <br />ft 2 <br />Wetted Perimeter <br />8.50 <br />ft <br />Top Width <br />8.49 <br />ft <br />Critical Depth <br />0.08 <br />ft <br />Critical Slope <br />0.016846 ft/ft <br />Velocity <br />2.47 <br />ft/s <2.50 ft /s for broken stone or hardpan. <br />Velocity Head <br />0.09 <br />ft <br />Specific Energy <br />0.14 <br />ft <br />Froude Number <br />1.99 <br />Flow is supercritical. <br />This is the existing swale beginning at Elevation 6295. No riprap is <br />proposed. If erosion is observed, riprap will be added to protect <br />channel. <br />03/06110 FlowMaster v5.08 <br />09:46:42 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 (203) 755 -1666 Page 1 of 1 <br />