well there is always water moving through the gates on KY, its a river, it has to. On KY here is water I've seen as far as current flows.
20K- no noticable current unless you are within 2 miles of the dam.
40K- some noticable current with 5-7 miles of the dam, rest of the lake nothing.
60K- somewhat noticable current all the way down to jonathan creek or so.
80K+ - good current, don't leave until they stop pulling it because the ledges are on fire.
You will get feeds during the summer with our without current but without current if you aren't at the right place at the right time, you aren't going to get in on the feeds. Once it hits that 60K and on up, a LOT more of the schools start locking on the sweet spots to feed and its not so much of a timing deal at that point. And they get pretty easy to catch, if they are pulling 80K and you aren't getting bit every 5th cast....MOVE!