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<br />set for two hours, twice each week (n=51), after light traps had been collected. <br />Drift net samples were preserved in alcohol for later examination and counting in <br />Vernal. Larval fish were sent to LFL for identification. Tabulated results for <br />larval light trap and drift net catch are presented in the Appendix. <br /> <br />Presence of and habitat use by young-of-the-year endangered fish were sampled <br />using 4 m x 1 m seine nets of 3 mm mesh. All backwater, suitable slack-water <br />and low velocity habitats within two, two-mile (RM 29-27; RM 13.8-11.8) and <br />one three-mile (RM 3.0-0.0) river reach were seined. Assorted physical <br />measurements of seined habitats were also collected. Three sampling trips were <br />conducted (12 August - 14 August; 26 August - 28 August; 9 September - II <br />September) resulting in collections from 163 sites. Additional trips were canceled <br />due to high flows (above 100 cfs) from mid September through October. All fish <br />captured were identified and counted in the field or preserved and examined in <br />Vernal. Fourteen of eighteen species captured were introduced species. None of <br />the four remaining species were endangered species (the chubs captured had fro <br />ray counts matching the typical roundtail morph). There was some stratification <br />of species within the river. Redside shiners were caught almost exclusively above <br />the confluence with the Uinta River, while sand shiners were caught almost <br />exclusively below that point. Bluegill (all adults) were captured below the Uinta <br />River and black crappie were caught only in the vicinity of the confluence with <br />the Green River. The four adult catfish captured were all in an eddy at RM 13.4. <br />Results of sampling are presented in the Appendix. <br /> <br />No charmel morphology transects were established in 1997. This activity is <br />scheduled for FY98. Discussions of applicable habitat measurement/evaluation <br />for this study are under discussion between the principal investigators. <br /> <br />The original study design called for young-of-the-year sampling in four, three- <br />mile reaches; one near Myton and three between the Uinta River and the <br />confluence with the Green River. Difficulty in sampling this river and a paucity <br />of access points induced researchers to decrease this to the two, two-mile and one, <br />three-mile sampling reaches described above. <br /> <br />VII. Recommendations: <br /> <br />Recommendations for changes to this study are incorporated armually via the <br />Duchesne River Technical Team discussion. FY98 SOW should reflect <br />recommended changes from UDWR. <br /> <br />VIII. Project Status: on track and ongoing <br /> <br />IX. FY 97 Budget <br />A. Funds Provided: $45K <br />B. Funds Expended: $45K <br />C. Difference: 0 <br /> <br />2 <br />