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population size, etc. It must be clearly recognized, however, that adequate flows by <br />themselves may not bring about the recovery of the fish. Such flows must be viewed as <br />only one, albeit major, step in the recovery process. Failure of the population to <br />increase after implementation of flow recommendations would not necessarily mean the <br />flow regime is inadequate. Rather, it might indicate that the anticipated population <br />response was too small to be detected or that our management efforts must be directed <br />toward additional important factors controlling the population. Moreover, because <br />Colorado squawfish apparently exhibit both long-term as well as short-term (migrational) <br />movements throughout their life history, such management efforts may need to include <br />other river reaches. <br />The objectives for recovery and delisting of the Colorado squawfish will probably <br />include the maintenance of certain numerical levels of self-sustaining adult fish in <br />specified river reaches. Thus the size of the adult population will be tracked as part of <br />a monitoring program. Ultimately, however, the success of this and other recovery <br />efforts under the Recovery Implementation Program needs to be based on achieving and <br />maintaining a self-sustaining adult population size (number of animals) considered <br />necessary for species recovery and deli.sting. This requires that numerical population <br />targets or recovery goals be established for specific river reaches. These targets could <br />be actual population sizes or catch-rate statistics, direct indicators of population size. <br />Flow-habitat Management Objectives for the 15-mile Reach <br />Osmundson and Kaeding (Appendix A) presented data on the use of the 15-mile <br />reach by the endangered fishes and summarized information on several environmental <br />6