A favorite dive spot in Texas is Lake Travis. Located just outside Austin, the lake offers numerous sites that are easily available to the public by car or by boat. It is a large, deep lake formed by damming the Colorado River and is a water persons paradise. Visibility in the shallower water is about 30 feet on a good day.
Heavy traffic stirs up the silt on a busy weekend.
Be sure to gear up accordingly for deeper dives as the temperature can be as low as 60 degrees at 70 or 80 feet, even in the summer. Lots of boat traffic on this lake, so be careful. If you enter downstream closer to the dam, it's more like a wall dive. You can hear the noise from the turbines but they are out near the center of the dam. OK, so you've been warned.