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.41. ~ No.: I~ (for MC use) RECOVERY IMPLEMBNTA'1'ION PROGRAM POR THE ENDANGBRED PISH SPBCIBS IN THE UPPER COLORADO RIVER BASIN PY-1993 SCOPE or WORE RESEARCH PROPOSAL Lead Agencies: U.S. Bureau of Reclamation and U.S. Fish and Wildlife Service Submitted by: Larry Crist U.S. Bureau of Reclamation P.O. Box 11568 Salt Lake City, UT 84147 (801) 524-5498 Cateqorv (check one) A Ongoing project _ Requested new start _ Unsolicited project _ outside funding Henry Maddux U.S. Fish and Wildlife Service Ecological Services 2060 Administration Building 1745 West 1700 South Salt Lake City, Utah 84104-5110 (801) 524-5630 Date: March 31, 1992 I. Title of ProDosal: PIVE-YEAlt, PLAMING GORGE PLOW RECOMMENDATIONS INVESTIGATION II. RELATIONSHIP TO RECOVERY PROGRAM: Operation of Flaming Gorge Dam to produce flows acceptable 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 for 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 Plaming 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, U.S. 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 1