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<br />between Ash Avenue and Cross Section 9. <br />For the split flow path south of the railroad cmbankment upstream of 35th Street, addition <br />of the split flow discharge to the bypassed reach oflhe ma:n channel did not result in an increase <br />in water sLll'face elevations of more than 1 loot. In this reach the split flow discharge ,vas added <br />to the main channel discharge before the Hood way encroachments were added and no flood way <br />was requi:ed along the split flow path. <br />Where this study joined the Windsor FIS, th<.~ Hoodway width was adjusted (0 follow that <br />published in the Windsor FIS. <br />R,:sults of the Hoodway delineation at select,~d cro,s sections along the main Cache la <br />Poudre River channel are given in Table 3. Table 4 gives 1100dway dma for the 8th Street split <br />How reach. The floodway boundaries have been drav.l1 on maps Sheets I through 6. <br /> <br />9.0 SUMMARY <br />Water surface profiles were developed for the Cae he La Poudre River from the South <br />Platte River to Weld County Road 23 just dOvvl1stream of 'Vindsor using the 1998 Corps of <br />Engineers peak flood Hows. New hydraulic models were developed for the reach upstream and <br />downstream of Greeley. An exi~:ting hydraulic model tlmngh Greeley was modified. Two areas <br />of split How from the main Cache La Poudre River How were Identified and modeled. <br />Flood boundaries were drawn for the lOa-year and SOO..year floods. A one-foot-rise flood way <br />was delineated and mapped. <br />W here the profiles computed for this study joined (lose for the FEMA studies in the <br />vieinity of Windsor, they were initially lower than the FE\IA profiles but converged within a <br />few cross sections. It is recommended that the water smlllee profiles from this study be used to <br />replace th,~ FEMA profiles dOV\llstream of the convergence location. <br /> <br />9 <br />