Texas: Terrell (Clear Springs Scuba Park); Tyler (Tyler State Park, NOT Lake Tyler); Athens (Athens Scuba Park); Blue Lagoon (Huntsville); Comal River (New Braunfels); San Marcos River (San Marcos); Twin Lakes (Houston); Lake Travis (Austin); Canyon Lake (Austin- I think); Aquarena Springs (San Marcos- certification required to dive there); and there are some others, but these are the ones that first come to mind. I've only been to the first five sites I listed, and Aquarena. The only place I've dived in OK is Broken Bow, OK (Beaver Bend Lake). Or maybe it's Beaver's Bend, Broken Bow Lake... lol, sorry to my Okie friends, I'm just not sure.