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<br />oc..v1 <br /> <br />The outlet structure failed during 1994, so results were suspect, <br />During 1995, 631.798 fish (15 species) weighing 22.321 pounds were <br />harvested (adult carp 77% by weight; fathead minnows 71% by number), <br />Twelve adult razorbacks. 28 juvenile razorbacks, and 7 juvenile <br />squawfish were also collected, During 1996, 549,032 fish (16 <br />species) weighing 12.578 pounds were harvested (adult carp 75% by <br />weight; fathead minnow 49% by number), Six juvenile squawfish and <br />45 juvenil e razorbacks were also collected, <br /> <br />As a result of large numbers of nonnative fishes that have been <br />collected from Old Charley, the 8iology Committee recommended that <br />the site be used to remove nonnative fishes from the Green River, <br />All native fishes harvested will be returned to the river. <br /> <br />IV. Study Goals. Objectives, End Product: <br /> <br />Goal: To use Old Charley Wash for trapping and removing <br />nonnative fishes from the Green River, <br /> <br />End Products: Tabulation of results, <br /> <br />V, Study Area <br /> <br />Old Charley Wash (Green River at river mile 249,7) <br /> <br />VI, Study Methods/Approach <br /> <br />During spring runoff. Old Charley will be allowed.to fill naturally <br />through the outlet structure and, when flows exceed 14.000 cfs at <br />Jensen. over the tops of the levees, The inlet gate will remain <br />closed to prevent sediment inflow and minimize sedimentation <br />(requested by Steve 8rock), When flows at Jensen have peaked. the <br />outlet gate will be closed. During periods when flows exceed 14,000 <br />cfs, fish will continue to have free access to the site over the <br />levees. Once flows subside. whatever fishes remain in the site will <br />be trapped. Old Charley can be drained when Jensen.flows drop below <br />3.000 cfs. as early as late July, Draining consists of ensuring the <br />outlet screen is in place (to prevent escapement of fishes). opening <br />the outlet gate, and harvesting all flshes, Fishes will be <br />identified by species. weighed, and counted, Native fishes will be <br />put back into the river: nonnatives will be disposed of. Data will <br />be tabulated and distributed to Recovery Program participants. To <br />ensure a smooth operation, individuals will be identified who will <br /> <br />2 <br />