Houston Area dog Parks: http://www.houstondogpark.org/
Greater Houston Pembroke Welsh Corgi Fanciers: http://www.houstonpembrokes.org/
Check out the other Corgi groups:
For all Texans (or former Texans) and their corgis: http://www.mycorgi.com/group/corgisintexas
North Texas / Dallas, Fort Worth http://www.mycorgi.com/group/northtexascorgis
South Texas / San Antonio http://www.mycorgi.com/group/southtexascorgis
If you have other links please send me a message and I'll be happy to include them.