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METHODS <br />Enclosures and Fish Introduction - 2003 <br />Enclosures were constructed at the Baeser floodplain site beginning in March and <br />were completed in early May 2003. Twelve enclosures of approximately 1/8 acre were <br />constructed using field fence and steel t-posts as the framework over which 7-mm <br />hardware cloth was attached. Over the hardware cloth, a layer of 1-mm mesh screen was <br />attached using lath and screws and then a final layer of poly-tarp to contain stocked larval <br />razorback sucker and bonytail. The bottom 30 cm of the 1 mm mesh screen was buried in <br />a trench and the bottom of the poly-tarp was anchored into the substrate using iron rod <br />(re-bar) of 1.2 cm diameter running the entire length of the tarp (See Photos Appendix <br />B). <br />At the time bonytail were available, the Baeser wetland was dry. Water was <br />pumped from the Green River through the lateral breech in the levee and into the <br />floodplain site to allow introduction of bonytail larvae on 13 May 2003. A total of 2,000 <br />bonytail larvae obtained from Dexter National Fish Hatchery were introduced into two <br />enclosures prior to high flows and floodplain connection. The Baeser floodplain <br />connected with the river on 20 May and was full by 22 May. Unpredicted high flows <br />(~ 19,000 cfs) totally inundated the study enclosures, making it necessary to wait for <br />flows to subside before razorback larvae could be stocked into the enclosures. After <br />waiting for a week for the floodplain site to drain, water levels were still too high to stock <br />larvae and maintain them in the enclosures. It became necessary to pump additional <br />4 <br />