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DRAFT2 Study Objectives 1) Determine the relationship between availability, formation, and maintenance of Colorado squawfish nursery habitat and test release flows from Flaming Gorge Dam as measured by macro- and meso- habitat features. 2) Develop definitions for macro- and meso- habitat features based on fluvial geomorphological processes. 3) Describe the relationship between geomorphological processes of sediment transport and nursery habitat formation and maintenance in the Green River. 4) Describe the relationship between nursery habitat areas available to and selected by Colorado squawfish based on meso- and macro- habitat features. 5) Describe the relationship between degree-day accumulation in main channel and nursery habitat areas. 6) Determine the relationship between degree-day accumulation in all potential nursery habitat areas and those utilized by young Colorado squawfish. 7) Determine the relationship between the quantity of nursery habitats available in the summer period to the number of young Colorado squawfish present in nursery habitats during the autumn period 8) Determine the usefulness of video imagery as a predictor of year class strength of Colorado squawfish 9) Refine the interpretation of video so that "quality" nursery habitats can be distinguished 10) Compare intensive.sampling data and the concept of habitat utilization to standardized monitoring data to assess a) ways of refining standardized monitoring procedures and b) ways of malting greater use of the data currently being collected. Objectives 1-3 comprise the fluvial geomorphology portion of the study, which is being conducted by the Geography Department at Utah State University (USU). Their studies concentrate on how the river system creates and maintains certain types of habitats and how flows can be manipulated to m~rim»e favorable habitat. Objectives 410 were addressed by UDWR and are discussed in this report. -2-