Welcome to the Canyon Lake Gorge Preservation Society

During one week in the summer of 2002, more than 34 inches of rain fell in the upper watershed of the Guadalupe River, setting off a torrent of floodwater that carved a perfectly fascinating geological wonder—the Canyon Lake Gorge—out of the earth.

The flood roared through the Hill Country northwest of New Braunfels, tearing away soil, ripping up huge trees, crumpling houses and sending a rush of water from swollen Canyon Lake over its spillway for the first time since the reservoir was completed in 1964.

The historic flood sliced open the ground below the spillway, creating a gigantic 64-acre Gorge and exposing ancient, cretaceous limestone, fossils and even dinosaur footprints 110 million years old.

It is a textbook example highlighting Hill Country geology and the exposed Trinity Aquifer, clearly showing faults, fractures and seeps in the limestone. Limestone layers created from an ancient sea are visible, and visitors admire waterfalls and springs where the aquifer is exposed.

The Gorge is a real-life classroom in which visitors learn how the aquifer’s underground permeable rock cavities soak up, store, and move rainwater that many in Central Texas depend on for drinking water and irrigation.

Geologists and oil company representatives come to study the faults and fracturing of the Gorge’s limestone.

The Gorge gives tour participants an opportunity to explore dinosaur tracks and perfectly preserved fossils, exposed for the first time in millions of years. Fossilized sea urchins are so perfectly preserved that one can see the spines and the minute seams along the creatures’ bodies. One can even see fossilized ocean ripples in the limestone.

Learn More History


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Support the Gorge Preservation Society

The Gorge Preservation Society (GPS) is a local citizen's group whose mission is to promote the enjoyment and conservation of this unique natural phenomenon by encouraging responsible, quality access opportunities through academic partnerships, economic initiatives and citizen involvement.

The GPS has partnered with the Guadalupe-Blanco River Authority and the U.S. Army Corps of Engineers to help achieve this goal. Join the GPS as we continue to develop resources, long-term plans, and promote educational endeavors.

Learn more about the GPS

Join or Renew with the Gorge Preservation Society

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Documentary Sample

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Become a Member
of the
Gorge Preservation Society

Annual membership includes:
Free admission for you and 3 guests to periodically scheduled GPS Programs
Advanced purchase of 2 (Ecologist level) or 4 (all other levels) tickets for the Moonlight in the Gorge Gala
No cost guided tour and/or hiking trail coupons based on membership level

Gorge Ecologist

$25.00 Add to Cart

Gorge Naturalist

$50.00 Add to Cart

Gorge Guardian
includes 2 tour coupons


Gorge Preservationist
includes 2 guided gorge tour coupons and 2 self-guided hiking coupons

$250.00 Add to Cart

Gorge Conservationist
includes 4 tour coupons


Gorge Curator Lifetime Membership
includes 4 guided gorge tour coupons and 4 self-guided hiking tour coupons annually

$1,000.00 Add to Cart

More Membership Information...


choose your own contribution or add to your membership


Canyon Lake Gorge Preservation Society

Contact Us

Mailing Address
16029 S Access Rd
Canyon Lake, TX 78133

Our staff is composed entirely of volunteers who serve as Trailblazers, Tour Guides & Docents, and Board & Committee members. Please contact us by email at gpscanyongorge2002@gmail.com. If you do require immediate assistance, call 830-964-5424


Getting Here

GPS coordinate
N 29.86304 W 098.18750


© 2009 - 2023 Gorge Preservation Society