A few years back we were fish at the PennWarner club.. There are several lakes there on a reclaimed landfill. They were draining one lake into another by means of a 3' diameter pipe that sent a stream of water out into the lake churning up the mud. A river of muddy water extended out into the lake and all winter long the edges of that river produced Walleye like I've never seen. Fishing from the bank we'd average 4 or 5 fish a day each most in the 4-5 lb range. Every once in a while we pulled in a 9-10 pounder! Too bad I wouldn't eat a fish out of there on a bet!