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<br />• <br />DITCH 5-D10 <br />SEDCAD+ CHANNEL UTILITY <br />----------------------- <br />ERODIBLE CHANNEL <br />T <br />***************:t**************** ---------- <br />* * <br />* * <br />* Z* <br />* * D <br />* <br />* ,t <br />* b <br />Discharge <br />Bottom (b) <br />Side slopes (Z) <br />Bed Slope <br />Manning's n <br />• <br /> <br />= 0.32 cfs <br />= 0.50 feet <br />= 2.0:1 <br />= 0.500 ~ <br />= 0.030 <br />Depth (D) _ <br />Top width (T) _ <br />Velocity = <br />Hydraulic Radius = <br />0.11 feet <br />0.94 feet <br />0.65 ft/sec <br />0.08 feet <br />Exhibit 18 Eevised 12/8/89 <br />-196- <br />