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<br />COLORADO RIVER RECOVERY PROGRAM <br />FY 2002 ANNUAL PROJECT REPORT <br /> <br />RECOVERY PROGRAM <br />PROJECT NUMBER: C-4b <br /> <br />I. Project Title: Annual Operation and Maintenance of the Fish Passage Structure at <br />the Redlands Diversion Dam on the Gunnison River <br /> <br />II. Principallnvestigator(s): <br /> <br />Organization: <br />Address: <br /> <br />Chuck McAda, Project Leader <br />Bob D, Burdick, Fishery Biologist (LEAD) <br />Colorado River Fishery Project, <br />764 Horizon Drive, Building B <br />Grand Junction, CO 81506-3946 <br />(970) 245-9319 <br />(970) 245-6933 <br />Chuck _ McAda@FWS,GOV <br />Bob_Burdick@FWS.GOV <br /> <br />Phone: <br />FAX: <br />E-mail: <br /> <br />III. Project Summary: <br /> <br />The purpose of this project is to collect and summarize annual data on the number of <br />large-bodied fish, different fish species, and seasonal distribution of fish that use the Redlands <br />passageway, In 2002, the passageway was operational from 1 April to 9 October, The fish <br />ladder was voluntarily closed for 17 days between 22 April through 9 May 2002.to conserve <br />water. This is the seventh year that the fish passageway at Redlands has been operated since it <br />was completed in late-June 1996. In these 7 years, 59 sub-adult and adult Colorado pikeminnow <br />and six razorback sucker have ascended the fish passageway, The seven adult Colorado <br />pikeminnow and one adult razorback sucker that used the fish passageway in 2002 all did so in <br />July, This included a 16.8-pound female Colorado pikeminnow which was the largest Colorado <br />pikeminnow to ascend the Redlands passageway, The one razorback sucker had been previously <br />stocked in the Gunnison River near Delta, Colorado, Four thousand, four hundred fifty four fish <br />were collected in the fish trap during 2002. Native fishes comprised about 92% of this total for <br />each of the first 5 years. However, in 2002, the percentage of native fish declined to about 66%, <br />This marks the second consecutive year that there has been a significant decline in the relative <br />percentage of native fish that have used the fish ladder. Bluehead sucker comprised 30% of the <br />total fish in the fish trap in 2002, followed by flannelmouth sucker (19%), Channel catfish were <br />the most numerous nonnative fish collected (14% of the total) followed by green sunfish (6%), <br />white sucker (8%) and common carp (3%). All nonnative fish, except salmonid species, <br />continue to be removed, Since its completion in 1996, 53,894 fish have used the fishway. <br /> <br />IV. Study Schedule: <br />a. initial year: 2002 <br />b. final year: TBD <br /> <br />, <br />,I <br /> <br />redlands o&m CAb Page 1 <br />