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<br />COLORADO RIVER RECOVERY PROGRAM <br />FY 97 ANNUAL PROJECT REPORT <br /> <br />RECOVERY PROGRAM <br />PROJECT NUMBER:~ <br /> <br />I. Project Title: <br /> <br />Duchesne River: assessment and refinement of instream flow <br />needs <br /> <br />II. Principal Investigators: <br /> <br />Tim Modde; U.s. Fish and Wildlife Service, 266 West 100 <br />North, Suite 2, Vernal, Utah 84078; phone 435.789.0354; fax: <br />435.789.4805;e-mail tim_modde@fws.gov <br /> <br />Keith Day; Utah Division of Wildlife Resources, 152 East 100 <br />North, Vernal, Utah 84078; phone: 435.789.3103; fax: <br />435.789.8343 <br /> <br />Mike Montoya; Fish and Wildlife Department, Ute Indian <br />Tribe, P.O. Box 190, Fort Duchesne, Utah 84026; phone: <br />435.722.3941; fax: 435.722.2083 <br /> <br />III. Project Summary: <br /> <br />This is the first year of a 3-5 year study to provide <br />biological (fish distribution and relative abundance) and <br />physical-habitat (channel morphology and maintenance) data <br />for validation or refinement of the existing preliminary <br />flow recommendations for the Duchesne River to facilitate <br />recovery of the endangered fishes. Colorado squawfish (adult <br />and subadult) and razorback sucker (adult only) have been <br />collected in the spring in recent years in the lower 15 <br />miles of river. There is little information, however, on <br />the seasonal distribution and abundance of the endangered <br />fishes (all life stages) or on the ecosystem functions that <br />might be restored with differing flow regimes. <br /> <br />IV. Study Schedule: <br /> <br />a. Initial year: 1997 <br />b. Final year: 2002 <br /> <br />V. Relationship to RIPRAP <br /> <br />4.4 Green River Action Plan: Duchesne River; I. provide and <br />protect instream flows; I.A.2 conduct follow-up study to <br />evaluate and refine flow recommendations. <br /> <br />VI. Accomplishments of FY 97 Tasks and Deliverables, Discussion <br />of Initial Findings and Shortcomings: <br /> <br />Task 1. Conduct fish surveys (adult sampling and radio <br />tagging/radio telemetry; early life stage sampling). <br />Establish habitat transects for determining changes over <br /> <br />1 <br />