San Marcos River Info

The San Marcos River begins as a spring from the Edwards Aquifer in the center of the town of San Marcos. Four miles downstream from the spring, the Blanco River joins the San Marcos. Seventy-five miles downstream from there, the San Marcos River flows into the Guadalupe River near the town of Gonzales.

Action Angler guides the San Marcos River between the towns of San Marcos and Fentress.  We have been guiding central Texas rivers for over 10 years. The watercrafts we use are whitewater rafts custom designed for 2 anglers, complete with casting platforms and lean bars. These rafts are very stable and comfortable, and are great for getting through shallow water. 

The San Marcos River has an abundance of fish species including the state native Guadalupe Bass, Largemouth Bass, Smallmouth Bass, several species of Sunfish, and Rio Grande Perch, all of which will take a fly. The best rod to use on this river is an 8 to 9-foot, 5-weight or 6-weight fly rod. Short side arm casts under overhanging trees is often required.