Fishes Llano River, San Marcos River
River · The Texas Hill Country edge and Blackland Prairie southeast of San Marcos · Texas
San Marcos River Fishing Guides
A spring-fed Hill Country river that runs clear and 72 degrees year round from its headwater springs, holding Guadalupe bass and one of the most stable flows in Texas.
Gauge location. Map data © OpenStreetMap contributors.
Guides on the San Marcos River
Claimed profiles take booking requests. Unclaimed profiles are built from public records so the river is never empty; the guide can claim or remove one any time.
About the San Marcos River
The San Marcos begins at Spring Lake in the city of San Marcos, where the Edwards Aquifer surfaces through one of the largest spring complexes in the American Southwest. That origin gives the river a property almost no other Texas stream has: it runs clear and close to seventy-two degrees every day of the year, regardless of season or drought. The gauge downstream at Luling watches eight hundred and thirty-eight square miles and reports discharge and stage without a live temperature series, but on a spring-fed river the temperature is the one variable that does not need watching.
That thermal stability supports an unusual biological community, including several endangered species found nowhere else, and it makes the upper river a heavily protected and heavily studied stretch of water. It also makes the San Marcos one of the most dependable paddling rivers in the state, floatable in August of a drought year when almost everything else in central Texas has gone to disconnected pools.
For anglers the draw is the Guadalupe bass, the Texas state fish and a black bass endemic to the Hill Country. The San Marcos holds a good population alongside largemouth, the occasional smallmouth, and Rio Grande cichlid, which is a native perch-like fish that fights far above its size and is a favorite target on light fly tackle. Catfish occupy the deeper lower river toward Luling.
The trade-off is crowding. The upper river through town, especially the reach at Rio Vista Falls and City Park, is one of the busiest tubing and paddling stretches in Texas from May through September, so guided fishing tends to work either early mornings or the quieter water well downstream. The stretch below Thompson’s Islands toward Luling sees a small fraction of the traffic and holds the larger fish, which is the trade most guides make without being asked.
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Access
Spring Lake and the Meadows Center - the headwater springs, glass-bottom boat tours, restricted access.
San Marcos City Park and Rio Vista Falls - the busiest urban paddling and tubing reach.
Ramon Lucio and Cheatham Street accesses - in-town bank and launch points.
Thompson's Islands - a technical paddling reach below town with better fishing.
Westderfer Crossing - a common launch on the middle river.
Palmetto State Park near Luling - lower river camping and access near the gauge.
The Guadalupe confluence at Gonzales - the bottom of the river.
Seasons
Spring: strong spring flows, excellent Guadalupe bass fishing before the summer tubing crowds arrive.
Summer: constant cool spring water and heavy recreational traffic through town; fish early.
Fall: crowds thin out and the river is at its best for paddling and fishing together.
Winter: quiet and clear, with the same steady spring temperature and very little use.
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Questions
What is the current flow on the San Marcos River?
As of Sep 8, 12:45 am, the USGS gauge San Marcos Rv at Luling, TX reads 97 cfs. Conditions update every 15 minutes.
What species can you catch on the San Marcos River?
Anglers target Channel Catfish, Flathead Catfish, Guadalupe Bass, Largemouth Bass, Longear Sunfish, Rio Grande Cichlid, Smallmouth Bass, Spotted Bass on the San Marcos River in Texas.
Are there fishing guides on the San Marcos River?
GuidedFloats lists 2 guides and outfitters on the San Marcos River. Claimed profiles accept booking requests; unclaimed profiles are built from public records and link to the business.
Where can you access the San Marcos River?
Spring Lake and the Meadows Center - the headwater springs, glass-bottom boat tours, restricted access. San Marcos City Park and Rio Vista Falls - the busiest urban paddling and tubing reach. Ramon Lucio and Cheatham Street accesses - in-town bank and launch points. Thompson's Islands - a technical paddling reach below town with better fishing. Westderfer Crossing - a common launch on the middle river. Palmetto State Park near Luling - lower river camping and access near the gauge. The Guadalupe confluence at Gonzales - the bottom of the river.
When is the best time to fish the San Marcos River?
Spring: strong spring flows, excellent Guadalupe bass fishing before the summer tubing crowds arrive. Summer: constant cool spring water and heavy recreational traffic through town; fish early. Fall: crowds thin out and the river is at its best for paddling and fishing together. Winter: quiet and clear, with the same steady spring temperature and very little use.
Where are the fishing regulations for the San Marcos River?
Regulations change by season and section. Read the current rules on the Texas agency site: https://tpwd.texas.gov/regulations/outdoor-annual/fishing/