I live in the same neck of the woods too....if I feel the need to have a short fishing excursion, I'll roll out to the Fort Worth Nature Center, Trinity River (Panther Island Pavilion) or Marine Creek. I've caught fish in all three locations. Quantity for greasing is another story.
Of the three, if you're aiming to catch and grease, go to Fort Worth Nature Center. I've caught a lot of crappie and sandbass there. The Only big "fear factor" (in my opinion) are the alligators that reside there.
I've actually captured an alligator image on my Lowrance Elite 5 Chirp Fish Finder (in 5-8 feet of water). I'm literally seeing a whole full image of alligator underneath 5-8 foot of water. Although, it's a bit nerve racking, they pretty much will leave you alone.
Also, I've caught a lot of fish there without a lot of boat traffic. Scenery is fantastic. Vehicle parking is safe too. Go check it out!
Bruce V....Seriously, The real Bruce Lee;-)