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<br />at the time of photography. Two, channel degradation is <br /> <br />occurring as a result of the relatively clean water being <br /> <br /> <br />released from Chatfield in terms of sediment loading, <br /> <br />No detailed information on the reach from Oxford Avenue to <br /> <br /> <br />Union Avenue exists, Thus, two normal depth calculations based <br /> <br /> <br />on cross-sections from the July 1. 1983 mapping were made along <br /> <br /> <br />with weir calculations at Union Dam and the Denver Water Board <br /> <br /> <br />Drop Structure to provide better floodplain definition through <br /> <br /> <br />this area. The results of these calculations along with a <br /> <br /> <br />consolidation of cross-section data from the Flood Insurance <br /> <br /> <br />Studies are listed in Table 3 <br /> <br />Finally, it was encouraging to note that the cross-sections <br />between studies were located at approximately the same, if not <br />exactly the same locations. This made comparing 100-year flood <br />elevations very easy and produced results that were in many <br />cases identical. It was also observed during cross-section <br />locating and plotting that some minor channel shifting has <br />occurred since these Flood Insurance Studies were done and thus <br /> <br /> <br />the channel stationing was not useful, New channel stationing <br /> <br /> <br />was provided in this study with station 10,000 serving as the <br /> <br /> <br />origin at the centerline of Oxford Avenue, <br /> <br />Data and Information <br /> <br />The findings of this investigation are presented on flooded <br /> <br /> <br />area maps and flood profiles, The flooded area maps are large <br /> <br />n8_ <br />