Warm water outflows

Yesterday I went to the warm water outflow on the Potomac River in Dickerson, Maryland. I assume that I was there on a bad day. The pressure was dropping and all of that other bunk. There were both Largemouth and Smallmouth Bass everywhere. Mostly Bigmouths. (Where the water flows out of the power plant is a canal that has been turned into a kayak slalom course. I was told that some of the national team use it to practice.) I caught one each of both species of bass, one Crappie, one Bluegill and one Warmouth. I fished for three hours and used everything in my vest. I got follows on almost every cast but the fish were reluctant. I tried every method of retrieve and fished the white water and the still. I saw Largemouth Bss up to four pounds and they charged my flies and veered off well short of what I would even call a short strike. It was frustrating. I met a man that said he was catching fish on a spinning rod but I never saw him fighting a fish. Anyway, it is a fine looking place with wonderful potential and I am sure that on the right day it will be great. It gets a lot of pressure and I assume that many of the fish have been caught and released several times. One two pound bass had a small plug attached to its gill plate. I would suggest that anyone in the area give it a try. Most of the river is covered with ice and the outflow area is balmy. I never fished an outflow before. The air temp was right at thirty-two F so there was ice on the guides.