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. . III COLORADO: (see attachment) Production of squawfish larvae will be evaluated using drift net sampling at three locations. One station on the Colorado and Gunnison rivers immediately upstream of their confluence. and a third site on the Colorado River at Loma, Colorado . Data gathered from this study will provide information on relationships between relative reproductive success and annual flow regimes, and a relative measure of input into downstream nursery habitats. Catch per unit effort indices will also be examined to evaluate the degree of downstream transport of these larvae out of these reaches. Drift net sampling would be replicated at each site. Sampling will be conducted simultaneously at each site, and will be conducted daily at dawn throughout the month of July. Samples will be field processed and prepared for taxonomic identificationn and enumeration by species by CSU Larval Fish Lab in Fort Collins, Colorado. VI. Task Description (FY-1992) : See above VII. Study Schedule (start/end by task) : FY94: Collect and analyze field data, evaluate inter-relationships FY95: Collect and analyze field data, evaluate inter-relationships FY96: Collect and analyze field data, evaluate inter-relationships FY97: Surnrnarize infonnation, evaluate inter-relationships VIII. FY- 94 Work Description of work: Deliverables (due date) - Budget (by task) Utah Labor - $40,500 Travel - 3,000 Equipment - 4,500 Total - See above Colorado 38,400 5,000 1. 000 44,400 BOR. <7,000> 48,000 <7,000> Tot. 78,900 8,000 5,500 92,400 . Larval sample analysis; separate SOW. Conduct field investigations of the relative abundance of drifting larval and age-O Colorado squawfish. Results of spring sampling in the Colorado River will be used to estimate the relative abundance of age-O Colorado squawfish. This program could provide a test of current hypotheses on the overwinter survival of age-O Colorado squawfish. In addition, it may provide indices of recruitment to the adult stock more useful. IX. Budget Summary. FY-1994 FY-1995 FY-1996 FY-1997 Total $92.400 $97.000 $102.000 $22,000 $313.400 . Do not include BR-FWS transfer overhead costs.