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• <br />17 <br />1. Increase fishing opportunity (Long Range Plan Goals 12, 12.1, and <br />12.3 and Regional Operations Plan FISH 0300(1-. <br />~` 2. Lake provides warmwater fish habitat rather than Coldwater fish <br />habitat. <br />3. The target species already exist in this water and in adjoining waters <br />(Connected Lake-Small and Duke). Channel catfish exist in the <br />Colorado River. <br />B. Species, numbers, and dates <br />1. Largemouth bass - 2,700/year <br />2. Bluegill - 5,000/year <br />3. Channel catfish - 2,700/yr <br />• <br />IV. Escapement factors <br />A. Escapement potential <br />1. Fish escapement through the outlet structure to the Colorado River <br />• would be very difficult. The outlet structure is a gated pipe that is <br />filtered by 3/4" gravel and Marifi fabric. The outlet discharges to a <br />side channel that is dry except during spring runoff. Discharge water <br />disappears into the alluvium before reaching the river when the side <br />channel is dry. <br />2. The upper portion of this lake is protected from <br />• flooding by a berm constructed to the 100 year level. <br />At the lowest point along the lake shore the bank is at <br />about the 40 year level. In this area the river would <br />back up into the lake rather than flowing through it. <br />B. Survival potential following escapement <br />• <br />1. Intensive sampling over many years shows that largemouth bass and <br />bluegill do not persist in the river. <br />2. Channel catfish from Connected Lake could survive in <br />the Colorado River as evidenced by the high populations <br />• of wild channel catfish in this part of the river. <br />However, the hatchery reared Connected Lake catfish <br />would have a difficult time competing with wild <br />catfish. <br />C. Control measures to avoid escapement <br />• 1. The 3/4" gravel and Marifi fabric will filter discharges and prevent fish <br />from leaving the lake. <br />2. Location of the lake outside of the 40 year floodplain <br />• <br />