Hours of operation: Monday-Friday 8-5
Sample drop off: Monday-Thursday 8-5; Closed for lunch 12:00-1:15
For special arrangements please contact us at 512-245-2329.
Who we are
EARDC was established in 1979 with special funding for Texas State University to provide a public service in the study, understanding and use of the very fragile natural resource, the Edwards Aquifer.
Directory
The Edwards Aquifer Research and Data Center (EARDC) advances research, education, understanding of the Edwards Aquifer, and offers NELAP accredited services.
Summer camp and field days Information
EARDC enriches learning through year-round Field Days and the summer Aquatic Science Adventure Camp (ASAC).
Support The Development Of The Minds Of Tomorrow
EARDC has two excellent programs you can help support: EARDC Aquatic Science Adventure Camp Support Fund or the EARDC Groundwater Research Excellence Fund.
DONATE TODAY!
EARDC Aquatic Biodiversity Collection
The EARDC Aquifer Biodiversity Collection (ABC) is a curated repository of preserved specimens and associated digitized data representing fauna from groundwater and groundwater-dependent ecosystems.
Texas Groundwater Invertebrate Forum November 6
SAVE THE DATE!
This year’s Forum will be held on November 6, 2026, on the beautiful campus of Texas A&M University–San Antonio. Mark your calendars and stay tuned for more details!
EARDC NEWSLETTER
"When the well's dry, we know the worth of water"
~ Benjamin Franklin
Edwards Aquifer Information and River Conditions
Quick glance of the Edwards Aquifer, a list of local endangered and threatened species, current aquifer and river conditions (Flow rates (ft3/sec, cfs)