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<br />removed for cleaning or adjusted to experiment with various flow configuration~. <br /> <br />From both direct capture data and from radiotelemetry contacts. a <br />considerable database exists that indicate both juvenile and adult <br />Colorado squawfish use the plunge pool and the downstream reach. In <br />the Upper Colorado River. the numbers of razorback sucker encountered <br />are considerably less than that of Colorado squawfish and are now <br />extremely rare. Stocking razorback sucker will most likely have to be <br />conducted to re-establish them to historical stream reaches. <br /> <br />There are several uncertainties regarding whether Colorado squawfish or <br />razorback sucker will use the fishway because this is the first such <br />passageway to be constructed to pass these species. If Colorado <br />squawfish or razorback sucker are collected in the forebay fish trap. <br />this will obviously indicate that they have negotiated the fishway. <br />However. if fish are not found in the fish trap. there are several <br />possibilities: <br /> <br />1. The fish cannot reach the ladder because downstream flows in the <br />Gunnison River are too low. <br /> <br />2. Fish are not in the 2.3-mile stream reach downstream of. the dam. <br /> <br />3. Fish are in the 2.3.mile reach but are not in the plunge pool <br />immediately downstream of the dam. <br /> <br />There may be some behavioral restrictions that include the following <br />situations: <br /> <br />4. Fish are in the plunge pool but are shy or reluctant to use the <br />man-made entrance or cannot locate the downstream fishway <br />entrance. <br /> <br />5. Fish enter the fishway entrance but only partially continue up <br />the fishway or are reluctant to continue beyond the entrance. <br /> <br />Information on the use of the fishway by the target fish is critical to <br />determine if adjustments need to be made either to baffle configuration <br />or to river flows if the target fish are not using the fish passageway. <br /> <br />Construction of the fish passageway at Redlands is viewed as a long- <br />term commitment that will require biological monitoring. over several <br />years. In order to accomplish the objectives to adequately evaluate if <br /> <br />Redlands 4 <br />