If you want to learn more about rainwater harvesting, the current state of rainwater harvesting in Texas, or the water situation in the State of Texas, these links may be of help
High Plains Water Conservation District – http://www.hpwd.org/
LPL&W 2018 Strategic Water Supply Plan – https://ci.lubbock.tx.us/storage/images/4G1pIUEKJzRJftCGkkPQyFewa9PVdySLl4ekNLWV.pdf
Texas Water Development Board – https://www.twdb.texas.gov/
TAMU Rainwater Harvesting – https://rainwaterharvesting.tamu.edu/
American Rainwater Catchment System Association (ARCSA) – www.arcsa.org