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<br />e <br /> <br />. <br /> <br />. <br /> <br />b. Under Alternative VI diversion at the Marshall-Roberts headgate based on the total of the <br />absolute rights will be 136 cfs. <br /> <br />13. ARMY CORPS OF ENGINEERS 404 PERMIT <br /> <br />Projects rel~ted strictly to irrigation diversion improvements do not require a 404 Dredge & Fill <br />permit. Two examples of such activities sponsored by the District, namely the Smith Ditch and <br />Cary Ditch projects, fell into the non-permit category. However, this project which contemplates <br />returning the river to its original streambed will no doubt require a 404 permit. The Army Corps <br />of Engineer's Grand Junction office is aware of the preliminary plans to eliminate the annual <br />construction of the temporary diversion structures. The Army Corps has supported the District's <br />program to eliminate these structures and we assume it will do so for this one. <br /> <br />The need to construct permanent diversion structures across the river will require State of <br />Colorado 401 Water Quality Certification. We do not anticipate that this will be a problem. <br />Measures will have to be taken during construction to minimize sedimentation. No building <br />permit from Routt County will be required, however, approval by the County Commissioners <br />will be necessary. A public meeting will be held in Hayden to receive public input on the project <br />to describe the project and address concerns. <br /> <br />14. CONCLUSION <br /> <br />The elimination of these temporary dams that wash out every year is of crucial importance to the <br />long-term health & stability of the river. The construction ofa permanent concrete diversion <br />structure in the case of Alternative IlA or two structures in the case of Alternative V with <br />compressed air actuated adjustable crest level will insure diversions into the respective headgates <br />when the river drops to late summer flows. Fish and vessel passage will be provided now non- <br />existent under the present practice. In short, this is a project, which will correct and adverse <br />environmental impact on the river as well as provide a reliable flow of irrigation water during <br />late summer and fall. It should be noted that for three completed projects which eliminated <br />temporary river diversion dams, the district received overwhelming public support. <br /> <br />15. ALTERNATIVE SELECTION <br /> <br />The recommendation of the preferred and most cost-effective alternative will have to wait until <br />August (1999) when it will then be possible to make further field studies under low river flow <br />conditions. <br /> <br />J. R. Fetcher, Secretary <br />Upper Yampa Water Conservancy District <br />June 23, 1999 <br /> <br />II <br />