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<br />sites to approximately 16,000 cfs. Conversely, at the Old Charlie Diked bottomland, the <br />net deposition at the new opening was negligible. The flooding elevation at that site <br />remains 13,000 cfs. Cross sections were also established across the actual bottomlands <br />at Bonanza Bridge and Stirrup sites to quantify any sedimentation that occurs in future <br />years. These cross sections mainly provide baseline data for future reference. At Old <br />Charlie Diked, there were no good locations to establish bottomland monitoring cross <br />sections, only the inlet area will be monitored. In addition to the surveying of bottomland <br />monitoring cross sections, the adjacent Green river cross sections at all sites which have <br />been modified or may be modified in 1997 were re-surveyed in June 1997 to monitor any <br />significant changes to the river channel. Also, water surface elevations were taken on two <br />occasions during the 1997 runoff season to monitor any significant changes to the <br />stage/discharge relationships. These results have not yet been quantified. <br /> <br />Task 9 - Deliverables - A draft report summarizing the 1996 data collection efforts was <br />distributed for review in January 1997. <br /> <br />Task 10 - Report Review, Editing, and Final Report Preparation - All of these tasks were <br />accomplished. The report was peer-reviewed and reviewed by the Biology Committee in <br />1997, appropriate edits were made, and the Final report was completed and distributed in <br />September 1997. <br /> <br />Task 11 - Presentation - Results of the 1996 data collection efforts were presented at the <br />annual researchers meeting in January 1997. <br /> <br />Recommendations: <br /> <br />The monitoring of erosion and sedimentation at the bottomland and river cross sections <br />should continue in 1998 and beyond. The reaction of the river and bottomland to various <br />opening configurations will provide valuable geomorphological information which can be <br />referenced in making decisions on future levee removal activities. Monitoring of sediment <br />size distribution depositing into the bottomland would also provide useful information and <br />should be considered as an additional task for the data collection monitoring in conjunction <br />with the cross section monitoring at the sites. Bed material samples could be taken at the <br />cross sections for little extra cost. The additional costs would be comprised mainly of the <br />lab analysis of the samples. <br /> <br />As noted in the discussion of tasks 1-3, FLO was not involved in any of the initial <br />screening or evaluation of the sites. It is recommended that FLO takes a more active role <br />in the initial evaluation or at least discussion of the location of the new sites. This may help <br />alleviate many of the access problems experienced in 1997 and/or problems concerning <br />property boundaries at the sites. Also, prioritization of site work should include access <br />concerns. At sites where cooperation with adjacent landowners is of concern, the majority <br />of the work should be done during runoff season. At that time of year, most of the <br />flood ability assessment can be performed on site. At any other time of year, hydraulic <br />modeling is necessary, which involves establishing cross sections up and downstream of <br /> <br />4 <br />