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<br />DITCH 9-D18A <br />SEDCAD+ CHANNEL UTILITY <br />----------------------- <br />VEGETATED CHANNEL <br />T <br />~J <br />** ~~ <br />*~ f* <br />** Z ~~ <br />** ~~ <br />** •* <br />~* ** <br />*~ ** <br />D <br />Discharge = 13.04 cfs Depth (D) = 1.61 feet <br /> Top width (T) = 6.43 feet <br />Side slopes (Z) = 2.0:1 Velocity = 2.55 ft/sec <br />Bed Slope = 1.000 $ Hydraulic Radius = 0.72 feet <br />Manning's n = 0.047 <br />f ~ <br /> <br />Exhibit 18 <br />Revised 12/8/89 <br />-260- <br />