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oc Old Charlie Wash is a bottomland site that has been restored as a nursery habitat for the razorback sucker. It has inlet and outlet water control structures, and fish screens which allow access of small fishes but prevent access by larger fishes (so that larval razorbacks residing in Old Charlie will have a chance to outgrow their cohabitant fish predators). Unfortunately, there were problems with the old outlet structure during 1993, and larger fishes had access to the site. Also, when the site was drained in the fall, holes were found in the structure through which fishes (including razorbacks) may have escaped during draining. Therefore, repairs to the structure will be necessary. A fish kettle will also need to be installed, to facilitate the harvest of fishes during fa 11 dra i n i ng. Goal To provide floodplain nursery habitat for rearing young razorback suckers. Obiectives 1. Repair water and fish control structures; install a fish kettle. 2. Capture and stock razorback larvae into Old Charlie. 3. Evaluate operation of structures. 4. Evaluate use of Old Charlie for rearing larval razorbacks. IV. Description of past performance on this or similar projects: Old Charlie Wash has been developed and fitted with inlet and outlet water control structures and fish screens. During 1994 the site was allowed to fill with water during spring runoff, but larger fishes got into the site through the old outlet structure. Larval razorback suckers were captured and placed into the site, but none were recaptured during draining of the site in October. It is possible that razorbacks escaped from the site through holes found in the outlet structure during draining. Conditions at the site were monitored throughout the season, and appeared to be favorable for rearing of razorbacks. V. Study Area: Old Charlie Wash (Green River RM 250) 2