I don't know of a lot of photography-specific clubs in Texas (just the ones
listed here, but you're likely to find photographers of all skill levels in any active outdoor club in Texas.
Wander around the "Web Guide" of OutdoorPhoto's sister site, WildTexas.com, specifically in the
"Outdoor Recreation" category -- every single activity (for example, hiking) listed in there also has a "Clubs & Organizations" category with links to local, state, national and international clubs related to the activity.
Some quick links from the aforementioned resource:[list]*
Backpacking & Hiking clubs
*
Biking & Cycling clubs
*
Birding & Wildlife Watching clubs
*
Camping clubs/organizations
*
Running & Walking clubs[/list:u]Hope this helps! Enjoy!