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No. (for MC use) RECOVERY IMPLEMENTATION PROGRAM FOR THE ENDANGERED FISH SPECIES IN THE UPPER COLORADO RIVER BASIN FY-1992 SCOPE OF WORK RESEARCH PROPOSAL Lead Agencies: U.S. Bureau of Reclamation and U.S. Fish and Wildlife Service Submitted by: Robert Williams U.S. Bureau of Reclamation P.O. Box 11568 Salt Lake City, UT 84147 (801) 524-6087 Henry Maddux U.S. Fish and Wildlife Service Ecological Services 2060 Administration Building 1745 West 1700 South Salt Lake City, Utah 84104-5110 I. Title of Proposal: Category (check one) X Ongoing project X Requested new start _ Unsolicited project _ Outside funding FIVE-YEAR FLAMING GORGE FLOW RECOMMENDATIONS INVESTIGATION II. RELATIONSHIP TO RECOVERY PROGRAM: Operation of Flaming Gorge Dam to produce acceptable flows for endangered fish species continues to be a high priority element of the Recovery Program for the upper Colorado River basin endangered fishes. Studies recently completed in preparation of the Biological Opinion on the operation of Flaming Gorge have provided a basis for seasonal flow recommendations to enhance the endangered and native fish assemblage in the Green River system downstream of Flaming Gorge. Flow recommendations for the spring, summer/fall and winter periods were made based on information presented in the Consolidated Biology and Hydrology report. Recommendations for each period, however, were supported by differing levels of biological information, with the most comprehensive data set presented for the summer/fall period. The Bureau of Reclamation, Fish and Wildlife Service, and Western Area Power Administration are requesting that additional studies be conducted since the operation of Flaming Gorge is critical to the protection and enhancement of endangered and native fishes. Additional data is needed to refine flow recommendations, particularly during the winter and 1