Laserfiche WebLink
<br />COLORADO RIVER RECOVERY PROGRAM <br />FY 98 ANNUAL PROJECT REPORT <br /> <br />RECOVERY PROGRAM <br />PROJECT NUMBER: CAP-4b <br /> <br />I. Project Title: a. Evaluation of the Effectiveness of the Fish <br />Passage Structure at the Redlands Diversion Dam and Flow Requirements <br />in the 2.3-mile Reach of the Lower Gunnison River <br />and <br />b. Movement of Sub-adult and Adult Colorado Pikeminnow Following <br />Passage Through the Redlands Fishway and Identification of Colorado <br />Pikeminnow Spawning Sites in the Gunnison River <br /> <br />II. Principal Investigator(s): Frank K. Pfeifer. Project Leader <br />: Bob D. Burdick. Fishery Biologist <br />organization: Colorado River Fishery Project <br />address: 764 Horizon Drive. South Annex A <br />Grand Junction. CO 81506-3946 <br />phone: (970) 245-9319. FAX (970) 245-6933 <br />E-mail: R6FFA GRJ@MAIL.FWS.GOV <br /> <br />III. Project Summary: <br /> <br />The overall goal of this project is to evaluate use by endangered <br />fishes of the fish ladder at the Redlands Diversion Dam on the <br />Gunnison River. This is the third year that the fish passageway at <br />Redlands has been operated since it was completed in June 1996. In <br />1998. 23 sub-adult and adult Colorado pikeminnow ascended the fish <br />passageway compared to only one adult Colorado pikeminnow that was <br />collected in the fish trap in 1996 and 18 in 1997. Pikeminnow have <br />used the ladder exclusively in July and August. A total of 7.598 <br />fish were collected in the fish trap in 1998. Ninety-three percent <br />were native fishes. including 55% bluehead suckers and 30% <br />flannelmouth suckers. Since its completion in 1996. approximately <br />28,200 fish have used the fishway. Native fish have comprised about <br />93t of this total for each of the 3 years; however, the total number <br />of fish that used the ladder in 1998 was 38% less (4.937 fish) than <br />1997. The project will continue through FYOO; a final report is due <br />in January 2001. <br /> <br />IV. Study Schedule: <br />a. initial year: 1996 <br />b. final year: 2000 <br /> <br />V. Relationship to RIPRAP: <br />A. Colorado River Action Plan: Gunnison River: II.B.1.d. Monitor and <br />evaluate success of the fish passage structure at the Redlands <br /> <br />CAP-4B.1 <br />