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~. <br />TABLE 91-31-2 (Cont.) <br />DITCH DESIGN SPECIFICATIONS <br />DITCH D-1 <br />Design Event (24 hr,) (yr.) 10 <br />ltainfall Event (inches) 1.8 <br />kunoff (inches) 0.5 <br />Watershed (acres) 182 <br />x Curve Humber 80 <br />~ Runoff (acre-f t.) 7.6 <br />:- Additional Volume (acre-f t) -- <br />a <br />Total (acre-f t.) 7.6 <br />Peak Runoff Flow (cfs) 71.1 <br />Additional Flow (cfs) -- <br />Total Peak FTow (cfs) 71.1 <br />Slope 0.015 <br />Side Slope (v:h) 3:1 <br />Width at Bottom (ft,) 4 <br />Depth (ft.) 3 <br />Manning Coefficient 0.012 <br />Full Flow (cfs) 240.5 <br />Velocity at Full Flow (fps) <br />, 6.2 <br />l <br />Depth of Peak Flow (ft.) 1.7 <br />Velocity at Peak Flow (fps) 4.5 <br />Responsibility TCC <br />*Approved under the C-82-056 Permit <br />D_2 D-3 D_3 D_4 D_5 <br />10 10 100 10 10 <br />1.8 1.8 2.6 1.8 1.8 <br />1.0 0.2 0.5 0.2 0.8 <br />4.9 250 250 44 5.3 <br />90 70 70 70' 90 <br />0.3 4.2 10.4 0.7 0.4 <br />3.3 -- -- -- -- <br />3.6 4.2 10.4 0.7 0.4 <br />3.4 44.9 112,3 9.3 2.9 <br />1.7 -- -- -- -- <br />5.1 44.9 112.3 9.3 2.9 <br />0.010 0.011 0.011 0.014 0.023 <br />3:1 3:1 3:1 3:1 3:1 <br />3 12 12 2 3 <br />1.5 2.25 2.25 2 1.5 <br />0.042 0.042 0.042 0.052 0.042 <br />37.1 214.9 214.9 57.4 56.5 <br />3.3 5.1 5.1 3.6 5.0 <br />0.6 1.0 1,6 0.9 0.3 <br />1.9 3.2 4.2 2.3 2.3 <br />TCC TCC 'TCC TCC TCC <br />D-6(a) <br />10 <br />1.8 <br />1.2 <br />85 <br />0,1 <br />0,1 <br />1.3 <br />0.01 <br />1.3 <br />0.01 <br />2;1 <br />V <br />1 <br />0.035 <br />5.0 <br />2.5 <br />0.6 <br />1.8 <br />TCC <br /> <br />D-6 b) <br />10 <br />1.8 <br />1.2 <br />85 <br />0.1 <br />0.1 <br />1.3 <br />0,067 <br />2.3 <br />0,067 <br />2:1 <br />V <br />1 <br />0,035 <br />12.9 <br />6.4 <br />0.4 <br />3.8 <br />TCC <br />