The Guadalupe below Canyon Lake dam is the big-water float of Central Texas: cypress-lined banks, limestone bluffs, and a string of small rapids threaded along the twelve miles of River Road down to Gruene. It is colder, longer, and moodier than the Comal — and on the right day, it is the best river day in the state.
Know your flow
Everything on the Guadalupe depends on the release from Canyon Dam, measured in cubic feet per second (CFS). Under about 100 CFS the float is slow and scrapey; 100–300 CFS is the family sweet spot; above 300 CFS things get fast and rafts start replacing tubes. Outfitters post the day's flow, and the river can change week to week — check before you commit.
Because the release comes from the bottom of Canyon Lake, the water runs cold near the dam — bracing even in August. It warms as it travels toward Gruene.
The classic stretches
- The Horseshoe — the famous loop just below the dam where a long float returns near its starting point; home to the biggest concentration of outfitters.
- The Chute and Hueco Falls — named rapids that wake everyone up mid-float.
- The lower river into Gruene — gentler water and the prettiest cypress corridors.
Tubes, rafts, and when to pick which
Tubing rules the summer at moderate flows. When releases run high — often early summer after wet springs — outfitters shift to guided rafts, and the river briefly becomes a legitimate whitewater run. Kayaks are welcome year-round, and winter fly fishing for stocked trout in the tailwater is one of Texas's stranger secrets: this is the southernmost trout fishery in the country.
River Road
The road itself — four low-water crossings winding through the canyon — is a destination. Expect slow traffic behind shuttles in summer and remember that almost all riverbank is private property: enter and exit the water only at outfitters and public access points.
Rules and safety
- No glass or styrofoam on the river — checked at put-ins.
- Life jackets for kids, always; for everyone when flows are high.
- The rapids flip tubes — secure keys and phones or do not bring them.
- Respect private property along the banks; trespass enforcement is real.