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• ' <br />Channel Factor Channel AA-AA <br />Q 31.38 cfs <br />Z (side slopes) 10:1 <br />Shape Trapezoidal <br />n 0.030 <br />Limiting Velocity 5.0 fps <br />Slope 0.0413 ft/ft <br />Results <br />Normal Depth (dn) 0.37 ft <br />Ffow velocity 4.58 fps <br />Channel width 15 ft <br />Results <br />Based on the above results, the reclaimed drainage channel will have a minimal width of 15 feet and <br />• gently sloping sides. The bottom will be relatively flat with minute channeling. Added rock maybe placed <br />for energy dissipation. A trapezoidal channel with a minimum bottom width of 15 feet and 10h:1v orflatter <br />side slopes and no free board simulates this condition. The actual width will vary from 15 feet up to 100+ <br />feet. This typical cross section or one with the same or larger cross sectional area, will be used for the <br />entire channel reach. This will insure that the velocity will be below the limiting velocity of 5.0 fps, since <br />the peak flow was determined at the downstream end of the reclaimed drainage channel. No free board <br />was calculated because minimal, if any damage will occur if the flow does leave the banks for short <br />periods of time. <br />The reclaimed drainage channel will be topsoiled and revegetated according to Section 2.05.4(2)(d) and <br />(e). <br />ATTACHMENT 2.05.4(2)(c) - 1-2 <br />