Green is not a TVA dam. It and the majority of dams and resevoirs in KY are under the Corps of Engineers control.
Barren is pulled ~25 feet down. It seems to help some. Take a look on the corps' webpage and see how much area drains into GRL. Barren is ~940 square miles. That area, the watershed, typical rain events, and how much fill capacity GRL has at various drawdowns determines to what level they should drop the lake to in winter to deal with the inflow and plans for letting it go downstream.
It is disappointing that the parking lots flood on fairly regular basis. This speaks to the need to perhaps lower it more in winter.
The converse is also true. If you lower it that much it takes longer to fill. One year Barren never did hit summer pool.
BUT I would rather try and catch fish in a rising water situation than a falling one. Though if it is falling in the lake it is rising in the spillway, go try for a walleye!




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