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<br />. <br /> <br />. <br /> <br />Colorado Congressional Delegation/Maynes <br />Page 4 <br />May 4, 1990 <br /> <br />II. The Service's Role in the Demise of the Squawfish. <br /> <br />In 1962, the New Mexico Department of Game and Fish, together with the <br />Service, conducted a thorough pol icing of "trash fish ," including the Colorado <br />River squawfish, in the San Juan River. The Abstract of the Job Completion <br />Report and the Job Completion Report speak to the effectiveness of that <br />activity on the squawfish ki II. <br /> <br />The San Juan River and tributaries upstream from the <br />Navajo Dam were rotenoned to eliminate trash fish species <br />within the proposed impoundment area. A total of 3,870 <br />gallons of rotenone was used for the Navajo, Pine, and <br />San Juan Rivers. lethal concentrations were effective on <br />approximately 70 miles of the San Juan River, 15 miles of <br />the Pine River, and six miles of the Navajo River. <br /> <br />Fourteen species of fish were eliminated with this opera- <br />tion. <br /> <br />Very good kills were obtained in all three rivers, espe- <br />cially the San Juan, where lethal concentrations of <br />rotenone carried approximately 40 miles below the Navajo <br />Dam. <br /> <br />Abstract of Job Completion Report Development and Operations, as required <br />by Federal Aid in Fish Restoration Act, State-Wide Rough Fish Control, <br />Rehabilitation of the San Juan River, Federal Aid Project 1"-10-D-4, by <br />Harold F. Olson (hereinafter "Job Completion Report"). <br /> <br />A total of fourteen different species were collected from <br />the San Juan and Piedra Rivers. The rotenone treatment <br />was very successful. Good results, nearly total kill, <br />(sic) was obtained downstream to Fruitland, New Mexico, <br />approximately 40 miles below the Navajo Dam. This made <br />a total of approximately 75 miles of the San Juan River <br />that was treated. <br /> <br />Job Completion Report at p. 3. <br /> <br />A copy of the Job Completion Report, supra, is attached as Exhibit "C." <br /> <br />11/. The Role of Squawfish Plantings. <br /> <br />It is possible that the endangered species found in the San Juan River in <br />1987-1989 are the result of numerous stockings in the Colorado River. The <br />case of Colorado River Water Conservation District, Southeastern Water Con- <br />servation District, et al., v. James G. Watt, et al. (Andress) was filed in the <br />