Flood process
The gorge makes erosion visible at landscape scale: water removed soil and rock, reorganizing the channel in days.
Geology field guide · Canyon Lake
Canyon Lake Gorge
A flood-carved classroom exposing Cretaceous limestone, fossils, dinosaur tracks, faults, fractures, springs, and the workings of the Trinity Aquifer.
Hero image is an original decorative interpretation, not a documentary photograph.
Where16029 S. Access Road
Carved2002 flood
Scale64-acre gorge
Rock Record110-million-year limestone
Why this place matters
One week of rain opened deep time.
More than 34 inches of rain fell in the upper Guadalupe watershed during one week in 2002. Water overtopped the Canyon Lake spillway and cut a gorge that reveals ancient seafloor limestone and the plumbing of a Hill Country aquifer.
Cretaceous archive
Limestone layers, sea urchin fossils, ocean ripples, and dinosaur tracks preserve evidence from roughly 110 million years ago.
Aquifer window
Faults, fractures, seeps, springs, and permeable rock show how the Trinity Aquifer stores and moves water.
Field notes
Read the walls like pages.
Layer
Trace bedding planes and changes in texture or resistance.
Fracture
Notice how cracks steer water, roots, weathering, and erosion.
Fossil
Observe in place; never remove or damage geological evidence.
Seep
Look for where groundwater emerges and supports a different microhabitat.
Source ledger
Follow the original.
Official source checked September 10, 2026.
Visitor boundaryThe gorge is a protected educational landscape. Hours and access formats can change; verify before driving.