Nevermind....I see Lake Fairfield is a power plant lake too, so that's why the Tilapia make it thru the winter.

"Fairfield Lake is warmed by the TXU Big Brown power plant. Because of the warm water, people come from all over Texas to enjoy fantastic winter fishing opportunities"

http://www.tpwd.state.tx.us/state-parks/fairfield-lake


Fishing has never been about the fish....