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met, then such re-stocking and augmentation will not lead to self-sustaining <br />populations. Without the requisite habitat, some form of intervention will be <br />needed to sustain fish populations and may only serve to bank the fishes <br />genetically. <br />Reform of the Endangered Species Act (ESA) The compartmentalization of the <br />recovery of the Colorado River's listed fishes is rooted to some extent in the <br />ESA which does not clearly integrate recovery planning with critical habitat <br />designation, with consultation by federal agencies, or with habitat <br />conservation planning by private and state entities, and which does not give <br />recovery planning enough force. While sound range-wide recovery planning, <br />customized recovery implementation, and tailored regulatory compliance for the <br />Colorado's listed fishes could be instituted under the current ESA, this law <br />could be amended to provide a more forceful and timely path for recovery <br />planning that is directly tied to specific designations of critical habitat, <br />that guides cost effective recovery implementation across the geographic range <br />of any listed species, and that is the basis for consistent and reasonably <br />certain regulatory compliance. <br />ACKNOWLEDGEMENTS <br />This paper benefitted greatly from comments on earlier drafts by Marty <br />Meisler, Barry Saunders, John Shields, W.L. Minckley, Harold Tyus, James <br />Deacon, Lori Potter, and John Hamill. At the Colorado River Workshop itself, <br />we appreciated the comments from the panelists -- Dan Luecke, Chris Harris, <br />and George Arthur, from those who spoke at the break-out sessions, and from <br />all.the others at the workshop who offered their thoughts about the paper to <br />US. We also thank the Grand Canyon Trust and U.S. Bureau of Reclamation for <br />sponsoring an outstanding workshop and giving us the opportunity to present <br />this paper, but remain solely responsible for contents. <br />GENERAL REFERENCES <br />Carothers, Steven W., and Dorothy A. House. 1996. The Role of Science in <br />Colorado River Management. Colorado River Workshop, Grand Canyon Trust. <br />Flagstaff, Arizona. <br />Minckley, W.L., Paul C. Marsh, James E. Brooks, James E. Johnson, and Buddy <br />Lee Jensen. 1991. Management Toward Recovery of the Razorback Sucker. In <br />Battle Against Extinction, University of Arizona Press, Tucson and London <br />(eds. W.L. Minckley and J.E. Deacon). <br />Stanford, Jack A. 1994. Instream Flows to Assist the Recovery of Endangered <br />Fish Species of the Upper Colorado River Basin. Biological Report 24. <br />National Biological Survey, Washington, D.C. <br />SWCA, Inc. 1994. Final Feasibility Assessment for a Multi-Species Management <br />Program Lower Colorado River. Submitted to the Six-Agency Committee. Glendale, <br />California. (Appendices include the entire Endangered Species Act as <br />currently amended, the final critical habitat designation for the listed <br />Colorado River fishes, and the "Blue Book" for the Upper Basin Recovery <br />Implementation Program.) <br />Tyus, Harold. M. 1991. Ecology and Management of the Colorado Squawfish. In <br />Battle Against Extinction, University of Arizona Press, Tucson and London <br />(eds. W.L. Minckley and James E. Deacon). <br />U.S. Fish and Wildlife Service. 1987. Final Recovery Implementation Program <br />for Endangered Fish Species in the Upper Colorado River.Basin. Denver. <br />Colorado. <br />1990. Policy and Guidelines for Planning and <br />24