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Manning Equation <br /> Channel Channel Wetted <br /> depth, d width, W perimeter, <br /> (ft) (ft) WP <br />Temp RPE 0.78 1.95 3.51 <br />DCW 8a 1.07 1.1 3.24 <br />culvert (see culvert check sheet) <br />DCW 8b 1.07 1.1 3.24 <br />DCW Sc 0.56 1.44 2.56 <br />Channel Water <br />x-xect. Hydraulic Manning's n, surtace Velocity <br />Area, A radius, R from table slope, S <br />(sf) (fUft) <br />1.521 0.43 0.030 0,028 4.76 <br />1.177 0.36 0.038 0.01 2.01 <br />1.177 0.36 0.038 0.01 2.01 <br />0.8064 0.32 0.061 0.5 7.99 <br />