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Major and Historical Springs of Texas

Draft 30-Year Water Supply Plan

DRAFT Environmental Assessment ESA Section10(a)(1)(B) Incidental Take Permit and Habitat Conservation Plan for Reduction of Withdrawals from the Edwards Aquifer

Management Plan for the Conservation of Rare and Endangered Karst Species, Camp Bullis, Bexar and Comal Counties, Texas

Memorandum: Attachment 2 / Background and Recommendations Regarding Covered Species

Native Fish and Wildlife / Endangered Species

NatureServe Explorer: An Online Encyclopedia of Life [web application-home page]

New Species and New Name of Grasses from Texas

Observations on Zizania texana (Texas Wildrice), an Endangered Species

Phylogenetic Relationships and Systematic Revision of Central Texas Hemidactyliine Plethodontid Salamanders

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About Us

The Edwards Aquifer Authority is a groundwater district, mandated by the 1993 Edwards Aquifer Authority Act. The Act grants all of the powers, rights, and privileges necessary to manage, conserve, preserve, and protect the aquifer. The EAA regulates the portion of the Balcones Fault Zone Edwards Aquifer – a jurisdictional area that provides water to over 2 million people, and covers more than 8,000 square miles across eight counties. These include all of Uvalde, Medina, and Bexar counties as well as parts of Atascosa, Caldwell, Guadalupe, Comal, and Hays counties.

Aquifer Related News

The EAA Receives $75000 Contribution from the San Antonio River Authority

July 13, 2021

San Antonio adds pollinator garden at Confluence Park

June 25, 2021

Rivers on rise after area rains

June 24, 2021

El acuífero de Edwards, el recurso más importante para el abastecimiento de agua en San Antonio

June 17, 2021

View All Aquifer News

Contact the EAA


900 E. Quincy
San Antonio, TX 78215-1415
P: (210) 222-2204 or 1-800-292-1047
F. (210) 222-9869


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