Earth Day San Marcos Festival
Join us for an afternoon celebrating the Earth through entertainment, education, exploration, and fun!
Mark your calendars for the 13th Annual Earth Day San Marcos Festival, returning to Spring Lake on Saturday, April 18, 2026, from 10 a.m. to 4 p.m.! This year’s theme, “One Heart, Many Waters,” highlights the powerful connections between our community, our water, and the ecosystems that sustain us.
This free, family-friendly event offers a day of celebration, discovery, and connection at the headwaters of the San Marcos River. Enjoy hands-on activities, live performances, demonstrations, and interactive experiences, and connect with eco-focused exhibitors, local organizations, and vendors.
We can't wait to see you there!
Meet Our Vendors & Exhibitors
Discover local organizations, businesses, and community groups taking part in this year’s festival.
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Vendor List
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Non-Profit & Educational
- Bat Conservation International
- Caprian Thomas Moore Chapter, NSDAR
- Central Texas Biodiversity Bunch
- Councilwomen Alyssa Garza & Amanda Rodriguez
- Edwards Aquifer Research & Data Center
- Families Learning Together
- Hays County Master Naturalist
- H-E-B
- Indigenous Cultures Institute
- Keep San Marcos Beautiful
- Move SM
- Research Rangers
- San Marcos Discovery Center
- San Marcos Greenbelt Alliance
- Save Our Springs Alliance
- Texas Parks and Wildlife Department
- Texas State Employees Union
- The Eyes of the San Marcos River
- The Watershed Association
- TPWD Angler Education
- TXST Archaeology Club
- TXST Biology Department
- TXST Health Promotion Service
- TXST Mathworks
- Vegan Connection
- What Goes Here Flows Here
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Local Businesses & Artisans
- Creation Eea Crafts
- Current Goods
- Found Jewelry
- Gladdpol
- Hayat's Garden
- Hunters Hive Candles
- Jen M Ramos Handmade
- JenLand Recycled Art
- MedPark Hearing Center
- Renewal By Andersen
- Touchstone Arts
- Uptown Cheapskate
- Where'd The Wild Things Go
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Food & Beverage
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Get Involved
Become a Festival Vendor
We invite you to apply to host a booth at the Spring Lake Earth Day Festival to promote your group, organization, or business. Vendor booth registration is $30; non-profit education booths are free to participate. The deadline to apply is April 3, 2026!
Support Earth Day San Marcos—Become a Sponsor!
Partner with us to bring this community event to life while fostering education, sustainability, and environmental action. Sponsorships offer brand visibility, special recognition, and promotional perks at various levels.
Join the Volunteer Team
Volunteer opportunities are available – help with event set up and pack up, assisting festival attendees, grounds maintenance, and more! Fill out the form below to join our Earth Day Festival volunteer crew.
Event FAQs
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Where are you located?
We are located at 201 San Marcos Springs Drive, San Marcos, Texas. For directions, please see our directions page.
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Is the park wheelchair accessible?
The Meadows Center for Water and the Environment at Texas State University is continually working with the appropriate University personnel to assess our accessibility needs and make our campus as accessible as possible. While the Wetlands Boardwalk and Discovery Hall are wheelchair accessible, our glass-bottom boats are currently not. Unfortunately, we are not able to modify our historic boats, but we are currently researching the design, cost and construction of a fully accessible boat and related dock.
If the guest is able to transfer to the boat, the wheelchair can be left at the dock. There are two steps to board the boat from the dock and each boat has a handrail to help guests board. Please see the photo of the boat dock below. If you have specific questions, please call our Ticket Kiosk at 512.245.7590.
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What if it rains?
In the chance that there is rain, the scheduled activities, and glass-bottom boat rides will continue unless the weather becomes severe, such as lightning or strong winds. Please call ahead if you have any questions: 512.245.7570.
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What is the Meadows Center's pet policy?
Service animals only. Pets are not allowed anywhere on Texas State University campus, including the parking lot. Please do not leave pets in your vehicle.
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Concealed Carry Policy
The Meadows Center is an environmental education site where children are regularly present. Concealed carry of firearms is prohibited while minor children are on site. Open carry of firearms is always prohibited on Texas State University property.
Pursuant to Section 30.06, Penal Code (trespass by license holder with a concealed handgun), a person licensed under Subchapter H, Chapter 411, Government Code (handgun licensing law), may not enter this property with a concealed handgun.
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Fishing, Swimming, Boating Policy at Spring Lake
Spring Lake is an environmentally sensitive area protected by local, state, and federal laws. No swimming, fishing, or unauthorized watercraft.
Thank You To Our Sponsors!
Presenting Sponsor
Stage Sponsor
Partners & Supporting Sponsors
