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<br />, <br /> <br />A. INTRODUCTION <br /> <br />Tnis assessment is prepared to summarize and supplement the Bureau's <br /> <br />analysis of the impact of the Dallas Creek Project on Federally listed <br /> <br />endangered and Federally proposed endangered or threatened species. <br /> <br />The assessment responds to a request from the Fish and Wildlife Service <br /> <br />dated October 17, 1979. The Service suggested that the following species <br /> <br />be evaluated in the assessment: <br /> <br />'I <br /> <br />Listed Species <br /> <br />Bald eagle <br />American pergrine falcon <br />Black-footed ferret <br />Colorado squawfish <br />Humpback chub <br /> <br />Haliaeetus leucocephalus <br />Falco peregrinus anatum <br />Mustela nigripes <br />Ptychocheilus lucius <br />Gila cypha <br /> <br />" <br />;1, <br />'-I <br /> <br />::i <br /> <br />Proposed Species <br /> <br />Razorback sucker <br />Bony tail chub <br />Hedgehog cactus <br />Beardtongue <br /> <br />Xvrauchen texanus <br />Gila elegans <br />Echinocereus triglochidiatus var. inermis <br />Penstemon retrorsus <br /> <br />, <br />" <br /> <br />B. <br /> <br />PROJECT BACKGROUND <br /> <br />~: i <br /> <br />f' <br />~ <br /> <br />1. <br /> <br />Authorization <br /> <br />~-'~ <br /> <br />The Dallas Creek Project ~as authorized for construction by the <br /> <br />"-', <br />" <br /> <br />Colorado River Basin Act of September 30, 1968, (Public La~ 90-537) as a <br /> <br />~;" <br />~ <br />~,~ <br />~ <br />~ <br />~ <br /> <br />participating project under the Colorado River Storage Project Act of <br /> <br />April 11,1956, (Public La~ 84-485). The project represents a commitment <br /> <br />> <br /> <br />/ <br /> <br />of part of Colorado's share of the Upper Colorado River Basin streamflows <br /> <br />pursuant to the Colorado River Compact of 1922 and the Upper Colorado River <br /> <br />Basin Compact of 1948. <br /> <br />I <br />