You might try looking in Oklahoma. There is a river called the Blue River just over the border. Beautiful place the last time I was there. Be careful of cops in Okieland though. They tend to like to hassle Texans.

Also, you might look at Lake Ray Roberts, north of Denton. Or even look out in East Texas. There are numerous lakes out east that have campgrounds. It's hard to tell you where you're going to be least likely of being hassled by cops if you want to smoke, but there is some really pretty scenery. It's HOT as hell right now, so I'm shying away from camping until the fall.

Do a google search on campgrounds in Texas. Maybe try Texas tourism sites and look for campgrounds that way.

Good luck in your search!!!!