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<br />21 <br />3. Largemouth bass, bluegill, and crappie have been taken from Corn Lake <br />~ before 1993 sampling and probably are still present in small numbers. <br />They exist in other ponds in the vicinity. These three species do not <br />persist in the Colorado River and potential impacts from them escaping <br />to the river would be minimal to recovery of endangered fishes. <br />4. Corn Lake provides 3,900 days of angler use and this fishing <br />opportunity is an important benefit to the State Parks program. <br />B. Species, numbers, and dates <br />1. Largemouth bass - 1,000/yr <br />2. Bluegill - 2,000/yr <br />3. Crappie -salvaged from Highline Lake periodically <br /> <br />IV. Escapement factors <br />A. Escapement potential <br />0 <br />1. Presently the outflow is an open channel directly into the Colorado <br />! River. Outflow only occurs when irrigation water is being diverted into <br />lake - approximately April through October. An overflow culvert also <br />exists but the lake level can be managed to remain below the overflow <br />level. Before any stocking according to this plan occurs a weir device <br />with 1 /4" screen will be constructed in the outflow channel. <br />2. This lake last communicated with the river in 1983 when it was <br />flooded by runoff water. The bank was repaired in 1983 after the <br />flooding. The lake again communicated in 1984 when water backed <br />through the outlet channel. The lake did not communicate with the <br />river in 1993. <br />. B. Survival potential following escapement <br />1. 1 /4" screen on outlet should remove all but larval/Age 0 largemouth <br />bass, bluegill and crappie. Adults of these species do not persist in the <br />river system. Larval/Age 0 fish are very delicate and survival will be <br />difficult in the river. <br />~ 2. There are no major backwaters in the Colorado River in the immediate <br />vicinity of the outlet channel. This will reduce the potential of <br />largemouth bass, bluegill, and black crappie to survive in the riverine <br />system and will reduce the potential for impacts with endangered <br />fishes. <br />V. Impact to endangered species <br />A <br />A. There is no impact anticipated to endangered species that would effect <br />recovery because: <br /> <br />