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::::" Basins). It appears that some sediment removal woulG ne~ stream conveyance of the study reach. However, extensive or dredging operations would only provide a short term sol, because the South Platte River is constantly transmitting a load. This stream characteristic would fill a dredged-out s in a relatively short time during high str~am flows. SELECTED PLAN The plan-of-improvement that has been selected for the st~f~ reach is one that considers emergency repairs to existing structures, up-grading the existing levee system, increasing t~~ level of flood control protection, armoring erosion areas, maintaining present channel alignment, optimizing the Highway No, 55 bridge capacities, and stabilizing the river hydraulics through the study reach. << Due to above average stream flows over the past 5 years, the river channel through the study reach has caused substantial damage to existing flood control structures. To maintain and direct river flows into the main channel and flow to the Highway No. 55 bridges, the following measures need to be implemented. Deflector Dikes (jetties) For Jetty No.1, 300 feet of the jetty needs to be re-constructed as an overflow stone section which will be overtopped by flows greater than a 10-year flood event. 250 feet of the existing dike needs to be rip-rapped for erosion protection. (See plate No.2) For Jetty No.2, 525 feet of the jetty needs to be re-constructed as an overflow stone section which will be overtopped by flows greater than a 10-year flood event. 500 feet of the existing dike needs to be rip-rapped for erosion protection. (See Plate No.3) For Jetty No.3, 200 feet of the jetty needs to be re-constructed as an overflow stone section which will be overtopped by flows greater than a 10-year flood event. 350 feet of the existing dike needs to be rip-rapped for erosion protection. (See Plate NO.3) -8-