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APPENDIX A <br />PEAKING POWER STUDY WORK PLAN <br />FLAMING GORGE SCOPE OF WORK 1987 <br />Study Title: Hydraulic Study-Peaking Operation of Flaming Gorge <br />Study Objective: Determine the downstream stage/flow effects of <br />Flaming Gorge power releases, including limit of measurable <br />(meaningful) effect. <br />j_ Relationship of Study to Flaming Gorge Operation: Flaming Gorge <br />is operated.to produce peaking power, which creates wide <br />fluctuations in flow during the day creating problems for the <br />endangered fish which inhabit the Green River. Researchers <br />believe that fluctuation flows dewater backwaters, and cause some <br />temperature fluctuations, which may be significant to endangered <br />fish. <br />Proposed Methods: Existing field data will be analyzed, flow and <br />stage relationships will be developed for existing and or <br />discontinued gages, and new field data will be gathered as <br />appropriate. The Bureau of Reclamation has hydraulic routing <br />models that may be used to compute model flows from Flaming Gorge- <br />Reservoir on an hourly basis. FWS will work with the Bureau in <br />adapting their models to this study, or in creating a new model, <br />if necessary. The Service will also work at writing a linkage <br />program to the temperature model. The model will produce flows <br />and water surface elevations at desired locations. The hydraulic <br />model may be linked to the present temperature model, which is <br />capable of operating on an hourly time-step. <br />FY-87 Work Plan: <br />1. Review existing stream gaging data for the Green and Yampa <br />Rivers. <br />2. Develop action plan for gathering new data as appropriate. <br />3. Identify general locations and number of Continuous Flow <br />Recorders (CFR) to be installed, March 1987. <br />4. Check, clean, and identify needed parts for CFR's in storage, <br />November 1986. <br />5. Order parts for CFR and repair, November 1986. <br />6. Design and purchase equipment for the installation of CFR, <br />November 1986. <br />A-1