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• Table 2, South Breach • <br />Rating Table for Irregular Channel <br />Project Description <br />Worksheet Southern Breach <br />Flow Element Irregular Channel <br />Method Manning's Formula <br />Salve For Channel Depth <br />Input Data <br />Slope 0.001500 tt/ft <br />Options <br />Current Roughness Method Improved Lotter's Method <br />Open Channel Weighting Metho Improved Lotters Method <br />Closed Channel Weighting Meth Horton's Method <br />Attribute Minimum Maximum Increment <br />Discharge (cfs) 1,000.00 8,000.00 500.00 <br />Discharge <br />(cfs) Water <br />Surface <br />Elevation <br />~(h)' Velocity <br />(f7/s) Flow <br />Area <br />(tt') Welted <br />Perimeter <br />(tt) Top <br />Width <br />(h) <br />1,000 00 4 29 2.56 391 0 201.54 200.54 <br />1,500.00 4.85 2.97 505.5 208.46 207.23 <br />2,000.00 ~ 5.36 3.25 614.5 220.69 219.26 <br />2,500.00 5.82 3.49 716.9 232.11 230.51 <br />3,000.00 6:31 - 3,60 834.5 258.12 256.33 <br />3,50000 6: /9 3.61 968.7 29743 295.47 <br />4,000.00 711 3.76 1,064.8 308.34 306.34 <br />4,500.00 7.40 3.89 1,155.7 317.17 315.12 <br />5,000.00 7.68 4.02 7,244.0 325.50 32342 <br />5.500.00 7.94 4.14 1,329.9 333.41 331.29 <br />6,00000 8.19 4.24 1,413.8 340.96 338.80 <br />6,500.00 8 43 4.35 1,495 9 348.19 345.99 <br />7,000.00 866 4.44 1,576.3 355.12 352.89 <br />7,500.00 8.88 4.53 1,655.2 36180 359.54 <br />8,000.00 9 08 4 63 1,727.4 365.45 363.00 <br />Notes: <br />Mannings "n" is assumed to be 0.035 <br />The top of bank is equal to 9 feet <br />Water overtops the bank at a Bow 8000 cfs <br />The location of the cross section is shown on Figure 3.2 <br />Project Engineer: Brian Wood <br />c:\haeslatl\rmw\coIf102.fm2 Lidstona and Associates FlowMaster v6.1 (614k) <br />11/30/01 08'45'41 AM m Haes[atl Methods. Inc 37 Brooksitle Roatl Waterbury. CT 06708 USA (203) 755-1666 Page 1 011 <br />