Here are some quotes from Art Lander's interview with a Mr. Kinman printed in the Lexington Herald this weekend (January 28, 2007). I can't tell if Mr. Kinman is with Ky Fish & Wildlife or TVA.
Question: How will water levels and fishing conditions in the tailwaters (Cmberland River) be affected by the lake's severe drawdown?
Answer: "There will be a normal fluctuation (in river level) based on rainfall," Kinman said. The danger to trout populations will come during the dry months of the year, at low flow. To ensure proper water temperature and flow, Kinman said a minimum discharge of 500 to 600 cubic feet per second of water is needed. "This will prevent (large expanses) of exposed gravel, which over time could be harmful to aquatic insect life."
He said the Army Corps of Engineers "is willing to work with us on this. They understand the dangers to trout populations in the tailwaters." And the oxygenation of water discharged into the tailwaters isn't a problem. "The coldest water from the bottom of the lake can be run through the sluice gates and oxygenated as it sprays up over the concrete apron at the base of the dam."
Question: Will water temperatures and dissolved oxygen levels be monitored?
Answer: "Yes, after July," Kinman said. August through October are the most critical months for a major fish kill.