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TaTile 6, Slough Cross Section, Janu• 2001 <br /> Rating Table for Irregular Channel <br />Project Description <br />Worksheet January 2001 Slougl <br />Flow Element Irregular Channel <br />Method Manning's Formula <br />Solve For Channel Depth <br />Input Data <br />Slope 0.003000 fUtt <br />Options <br />Current Roughness Method Improved Lottels Method <br />Open Channel Weighting Metho Improved Lotter's Method <br />Closed Channel Weighting Meth Horton's Method <br />Attnbute Minimum Maximum Increment <br />Discharge (cfs) 100.00 1,500.00 100.00 <br />Discharge <br />{cfs) Water <br />Surface <br />Elevation <br />(ft) Velocity <br />(ft/s) Flow <br />Area <br />(tt') Wetted <br />Perimeter <br />(k) Top <br />Witlth <br />(N} <br />100.00 5,030.10 2.19 45 7 50.14 49.73 <br />200.00 5,030.59 2.85 70,1 51.62 50.82 <br />300.00 5,030.98 3.32 90.3 52.82 5170 <br />400.00 5,031.32 3.70 108.1 53.87 52.47 <br />500.00 5,031.63 4.02 124.5 54.81 53.17 <br />600.00 5,031.92 4.29 139.7 55.68 53.81 <br />700.00 5,032.18 4.54 154.2 56.50 54.41 <br />800 00 5,032.43 4.76 167 9 57.27 54.98 <br />900.00 5.032.67 4.97 181.1 58.00 55.52 <br />1.000.00 5,032.90 5.16 193.9 56.69 56.03 <br />1,100.00 5,033.17 5.26 209.0 61.39 58.56 <br />1,200.00 5,033.45 5 31 225 8 65.36 62.38 <br />1,300.00 5,033 70 5.37 242.1 68.99 65.87 <br />1,400.00 5,033.93 5.43 258.0 72.35 69.10 <br />1,500.00 5,034.12 5.54 271.0 73.78 70.36 <br />Notes: <br />Mannings "n" was assumed 0.035 <br />Flow begins to overtop the bank at approximately 1500 cfs <br />Cross section is located approximately 800 feel downstream in the Slough from the North Breach <br />Cross section represents the conditions present prior to the May 5, 2001 event <br />Cross section location is shown on Figure 3.2 <br />Project Engineer Brian Woad <br />c:\haestad\rmw\coIf102.fm2 Lidatone and Asaociatea FlowMaster v6.1 [614k1 <br />11/30/01 0859:12 AM ®Haestad Methods. Inc. 37 Brookside Roatl Waterbury, CT 06706 USA (203) 7551666 Page 1 of 1 <br />