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<br />Bend and not at Above Brennan. Baeser Bend is configured with a single connection <br />~ point near the middle of the site. Water in Baeser Bend must enter and leave the site <br /> <br />through the same breech. As a result, the complete flushing of remnant water from the <br />previous year does not occur. In contrast, Above Brennan is configured with upstream <br />and downstream breech connections allowing water to flow-through the site for a more <br />complete freshening replacement of the water. <br />~ Concerns about water quality prompted efforts to augment water at each site late <br />in the summer 2000. Water augmentation was expected to improve water quality and <br />prevent the sites from drying out. During the weekend just prior to the scheduled <br />~ starting date for pumping the fish kill at Baeser Bend occurred. The opportunity to <br />perhaps have prevented the fish kill was missed by just a few days. Because the fish <br />kill was partial, pumping was still initiated at Baeser Bend on 15 August 2000. Water <br />r <br />augmentation at Baeser Bend did not prevent the estimated 229 remaining razorback <br />sucker from dying during the winter. Razorback sucker in Above Brennan did survive <br />~ through the winter. <br />Survival of larval razorback sucker was not detected during the study. This could <br />either be the result of ineffective sampling methods or that measurable survival of larval <br />~ razorback sucker did not occur. Although sampling ineffectiveness cannot be <br />completely eliminated as a possibility, it is unlikely given that both sites were sampled <br />intensively for several days. <br />If stocked larval razorback sucker did not survive during this study, what caused <br />~ their mortality? Two possible explanations for larval razorback sucker mortality that <br />22 <br /> <br />