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• <br />DITCH 9-D17 <br />SEDCAD+ CHANNEL UTILITY <br />VEGETATED CHANNEL <br />T <br />**,r*~***~,r~*~*,-**~,r***~*,r~r***~ ---------- <br />** ** <br />** ~* <br /> ** Z ~* <br /> *~ •* p <br /> ,rr ~t <br /> ~* ** <br /> ** ** <br /> <br />• <br /> <br />Exhibit 18 <br />Discharge = 2.41 cfs <br />Side slopes (Z) = 3.0:1 <br />Bed Slope = 2.200 ~ <br />Manning's n = 0.080 <br />Depth (D) _ <br />Top width (T) _ <br />Velocity = <br />Hydraulic Radius = <br />0.76 feet <br />4.55 feet <br />1.39 ft/sec <br />0.36 feet <br />Revised 12/8/89 <br />-255- <br />