2.5

million

Texans served across eight Texas counties

90,000

gallons of rainwater collected at EAA headquarters in 2024

1,940

permit holders help us manage this vital resource

10,000

students have enjoyed free field trips to the EAA EOC

2,000

native plants given free to residents in Oct 2024

Our Purpose Runs Deep

The Edwards Aquifer is more than a water source — it’s a living story that connects our past, present and future. It’s the reason settlers came to this area, and it’s the lifeblood of our growth. Our aquifer is a resource we can study and learn from. It’s an incredible wonder, and it’s why we’re here.

Tap into the latest
research here at the EAA

The Edwards Aquifer Authority’s Environmental Data Portal is your gateway to today’s research, insights, and discoveries driving sustainability and innovation for the region.

🌿✨ Kristina Tolman, EAA Senior Habitat Conservation Coordinator for the Threatened and Endangered Species Department, has called San Marcos home for the past 22 years and she loves getting to protect the place she cares about most. Kristina is excited to share the impactful work behind the ...EAHCP, from the initiatives safeguarding your aquifer to the native aquatic/semi vegetation, and San Marcos Springs ecosystem. Protecting your aquifer means protecting the habitats these threatened and endangered species rely on.💧💚

And when you’re out enjoying these areas, be sure to look for and follow all EAHCP posted signage. Your actions play a crucial role in protecting these threatened and endangered species and their home!🐟 🦎

Manage💧Enhance💧Protect

EAA Paid Internship Opportunities for Spring 2026 Now Open – Apply Today!
We have internships available in the following EAA departments: Communications (at the EAA Education Outreach Center in San Antonio, TX), Groundwater Regulation, Finance, Modeling, Water Resources, and Edwards Aquifer ...Habitat Conservation Plan (all at our Downtown Main Office). All positions are 20 hours per week at $19.28 per hour.

📅 Application Deadline: December 5, 2025 at 4:30 PM CST

Visit the Careers page on our website for more information on each internship opportunity and to apply: https://www.governmentjobs.com/careers/edwardsaquifer

🦃🍁 Happy Thanksgiving week! Big thanks to Bill Taylor from KENS 5 & Kens5.com for the weather update. Cooler temperatures are on the way next week, with only a minimal chance of rain.
It's a great time to be thankful for the Edwards Aquifer and the life it brings to our region. ...As we celebrate, let’s continue caring for it in simple ways: run full loads of laundry, water plants only when needed, and be mindful of outdoor water use. Every small effort helps keep this vital resource strong for generations to come.💧💙

💧🌿 Our latest Aquifer In-Sight is here, giving you a front-row seat to this year’s EAA Summit!

We heard from EAA senior staff and Bill Taylor from KENS 5 & Kens5.com as they shared inspiring updates about the Edwards Aquifer Authority, how we’re managing, enhancing, and ...protecting this vital resource, and why educating our community is essential to keeping it healthy for generations to come.

Dive in and get a closer look at the work happening behind the scenes to keep your aquifer strong. 💙✨

Watch the full episode at the link in our comments!

Protecting our water starts with understanding it!💧
Brent Doty, our Associate Director of Aquifer Science Research, is here to share how our team studies land management practices to protect the Edwards Aquifer and promote water conservation. 🌿💙

As we face new challenges in ...safeguarding our aquifer, collaboration is key! Scientists, policymakers, and private citizens all play a critical role in conservation and protecting this vital resource for generations to come. 💧✨

Manage💧Enhance💧Protect

When you see our scientists in the field, what they’re really doing is protecting the unseen. Beneath the surface lies one of our most precious resources, the Edwards Aquifer. By studying water quality, land use, and the recharge zone above ground, we safeguard the water that sustains millions of... people, wildlife, and ecosystems below. Science connects it all.

Manage 💧 Enhance 💧 Protect 💧

#EdwardsAquifer #Sustainability #WaterProtection

🌊✨ Get an exclusive look at the technological advances of conservation at Spring Lake!

Kristina Tolman, EAA Senior Habitat Conservation Coordinator for the Threatened and Endangered Species Department, shares how the team is using advanced 3D mapping technology to explore in and ...around Spring Lake at The Meadows Center for Water and the Environment, giving us a deeper look at one of the habitats the threatened and endangered species call home.

From furthering conservation monitoring to guiding the growth of species protection, this tech is shaping the way we preserve the Edwards Aquifer for species that can only be found here and nowhere else in the world! 💧🐟🌿

The Edwards Aquifer Habitat Conservation Plan (EAHCP) defines how we protect federally listed species that live in the Edwards Aquifer and the Comal and San Marcos springs. The EAHCP is intended to provide assurance that suitable habitat for covered species will remain in both the San Marcos and Comal Springs.

➡️What is Bathymetric lidar?
Bathymetric refers to "underwater terrain" and LiDAR is a laser-based technology that maps terrain based on the time it takes for the laser points to bounce back to the sensor. LiDAR has traditionally been used to map above-water terrain. Bathymetric LiDAR is a new technology that uses a blue-green laser that can accurately penetrate water and map the underwater terrain. Secchi depth measures water clarity (how clear the water is) by measuring how deep you can still view a secchi disc underwater.

EAA's Aquifer Education Destination Reaches Major Milestone with 10,000 Annual Visitors 🎉💧

Today, the EAA Education Outreach Center celebrated the center’s new milestone of 10,000 annual visitors. It is through free educational field trips, group visits, and self-guided tours... that the center has gained thousands of aquifer stewards since the EAA EOC opened its doors in 2022. The Science, Technology, Engineering, Art, and Mathematics (STEAM) educational offerings are shepherded by Senior STEAM Outreach Educator, Sarah Valdez, and STEAM Outreach Educator II, Elizabeth Gutierrez. Throughout the years students from across the EAA jurisdiction have taken field trips to center to learn about the Edwards Aquifer and gain an appreciation for aquifer preservation.

“The EAA Education Outreach Center is a great resource that is open to all,” states Mike De La Garza, EAA Executive Director of Communications & Engagement. “Everyone wanting to learn about the world of water should make it a point to plan a trip and immerse themselves!”

The EAA EOC offers interactive exhibits and displays while also being completely free and open to the public. Most notably, the center features a Karst Theater; endangered species aquariums showcasing Texas blind salamanders and Fountain darters; a one-of-a-kind Global Perspective Display; an augmented reality Topobox; Cloud Caster; Texas Native Plant Demonstration Garden, and many more STEAM opportunities for school groups and field trips. Situated in the EAA Recharge Zone, on the grounds of Morgan’s Camp, the EAA EOC is rooted in inclusion and an adventure for all.