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• Table 3.2. Hydraulic Parameters far Existing and Rpprovetl Channel Conditions <br /> Discharge (cfs) Average Slope (X) Average Velocity 4iear Stress <br /> (Fps) (lbs/ft2) <br /> Channel Existing Approved Existing Approved Existing Approved Existing Approved <br /> 41-1 14.3 12.3 16.0 17.9 6.20 6.07 1.72 1.79 <br /> 41-1A 15.2 -- 10.7 -- 5.60 -- 1.33 -- <br /> 31-1 16.3 16.2 11.2 12.3 5.80 5.99 1.47 1.54 <br /> 31-2 12.9 10.6 10.2 13.5 5.19 5.25 1.21 1.29 <br /> 31-3 9.1 -- 13.2 -- 4.92 -- 1.19 -- <br /> 7-1 14.3 13.4 13.6 14.8 5.89 5.90 1.54 1.59 <br /> 7-2 6.9 14.4 13.7 12.4 4.47 5.74 0.99 1.47 <br /> 9/10-1 18.3 12.3 13.2 15.3 6.41 5.78 1.79 1.55 <br /> 9/10-2 9.7 9.7 10.7 B.7 4.72 4.43 1.02 0.88 <br /> 9/10-3 13.1 -- 12.6 -- 5.57 -- 1.42 -- <br /> 31-1(S1W) 32.6 31.6 4.5 B.8 5.63 6.90 1.11 1.76 <br /> 7-1(S1W) 24.2 18.4 7.5 B.9 5.95 5.67 1.34 1.30 <br /> 7-2(51) 25.6 28.3 7.3 B.5 6.02 6.55 1.39 1.61 <br /> 9/10-1(S1E) 33.7 31.2 B.2 7.1 6.91 6.42 1.73 1.50 <br /> 9/10-2(S1E) 29.1 28.9 B.1 9.3 6.52 6.80 1.58 1.77 <br /> Mean 10.7 11.5 5.7 6.0 1.39 1.50 <br /> Standard Deviation 3.1 3.4 0.68 0.69 0.25 0.26 <br /> NOTES 1) Peak Plows determined in accordance with SCS (1984). <br />• 2) Slope determinations were deriv ed Prom 1"=500 maps and represent an average chan- <br /> nel slope. <br /> 3) Normal depth procedure utilized in est imating velocity; a trapezoidal channel <br /> with 12 Poot channel width and 3 to 1 sideslopes ano roughness coefficient, n <br /> 0.03, was assumed. <br /> 4) Shear stress (ro) was estimated using the relationship io yRS. <br />• <br />34 <br />