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<br />time. <br /> <br />Habitat transects were identified in early May. Adult fish <br />sampling began 21 May (pre-peak flow) and ended 3 October <br />(base flow); early life sampling began 5 June and ended 11 <br />September. Table 1 gives sample types, gear, date, river <br />reach and descriptions. One shortcoming was that we were <br />unable to sample the Uinta River, a tributary of the <br />Duchesne River, because high water and limited access made <br />sampling a safety concern in the spring. Better local <br />knowledge will allow us to complete this task in FY98. <br /> <br />Radio transmitters were implanted in five Colorado squawfish <br />(rm 13, 13, 15, 26, 33) and one razorback sucker (rm 0.1) <br />between 4 June and 19 June. These fish were followed by <br />aerial flights and ground monitoring approximately weekly <br />from 19 June through 30 September. Two Colorado squawfish <br />that remained in the in the Duchesne River during summer <br />were tracked over 24-hours for habitat use data. <br /> <br />Task 2. Determine changes in habitat conditions under <br />various test flow scenarios. UDWR will contact Jack Schmidt <br />at Utah State University to assist with this task. The <br />geomorphic model developed by Jack for the Duchesne River <br />will be evaluated/modified during year one to facilitate <br />completion of this task in out years. <br /> <br />This task was delayed so that the principle investigators <br />can select the most appropriate method for quantifying <br />habitat availability at differing flows. <br /> <br />Task 3. Use data colelcted in Tasks 1 and 2 to develop <br />additonal hypotheses for testing as needed. <br /> <br />This is an ongoing task. <br /> <br />Task 4. Outline and define the Scope of Work for FY-98. <br /> <br />The FY98 draft scope of work was sent out for review in <br />December 1997. <br /> <br />VII. Recommendations: <br /> <br />1. Add winter sampling to determine if endangered fish use <br />the Duchesne River year-round. <br /> <br />2. In FY98 select an appropriate method for quantifying <br />endangered fish habitat at differing flows and complete <br />field work and modeling in out-years FY99, FYOO and FY01. <br /> <br />VIII.Project Status: <br /> <br />The project is on track except for developing the geomorphic <br />model. <br /> <br />2 <br />