1. Tracking U.S. ground water – reserves for the future?;Alley;Environment,2006
2. Texas Weather;Bomar,1983
3. Springs of Texas;Brune,1981
4. Progress report on the ground-water supply of Portales Valley, New Mexico, 1938–1941;Conover,1942
5. Ground water in the Ogallala formation in the Southern High Plains of Texas and New Mexico. MAP HA-330;Cronin,1969