Updated
San Marcos River
River
Fed by natural springs from the Edwards Aquifer, the San Marcos River maintains crystal-clear water at a consistent 72-78°F year-round, with depths typically 2-8 feet. The 75-mile river is a premier tubing destination just 30 miles from Austin, with outfitters offering 45-minute downtown floats to 3-hour adventures. Swimming access is available at multiple city parks. The springs are ecologically unique, home to endangered species including the Texas blind salamander and fountain darter. Parks open 6 AM to 11 PM.
Current water conditions
Live, provisional data from USGS gauge San Marcos Rv at Luling, TX (3.6 mi away), as of Aug 20, 5:45 PM gauge-local time. Conditions are for general information only and can change quickly — always judge the water in person and follow posted advisories and local guidance before swimming or paddling.
Weather at San Marcos River
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Frequently asked questions
- Where is San Marcos River?
- San Marcos River is a river in Texas.
- Can you swim at San Marcos River?
- There is no fixed answer for San Marcos River: whether it is safe to swim there on a given day depends on the water temperature, recent rainfall, and any advisories posted at San Marcos River in Texas. Check current water conditions before you go, and follow posted signs and local guidance.
- How is San Marcos River rated?
- San Marcos River in Texas has an average visitor rating of 4.4 out of 5, based on 647 reviews.
Visitor Reviews
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Best Times to Visit
- ›Check water levels and current conditions before visiting
- ›Wear life jackets when on the water
- ›Be aware of rapids and potential hazards
- ›Respect private property along riverbanks
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