I caught bass out of buffalo springs by the dam while I was a student at Tech. I also fished Higginbotham Park and would catch small cats and carp. They also stock rainbow trout in Higginbotham, just check with TPWD for stocking dates.
If you are a waterfowl enthusiast, go to the Playa lakes around town and get some awesome pictures of Teal and Canadians. Call the TPWD biologist for the county and they can tell you which Playa lakes are open for hunting in the surrounding areas. You might need to drive an hour or so, but you will find birds.