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San Marcos River Fishing Regulations
What to check before fishing at River Trail Park in Caldwell County, Texas.
Fishing at San Marcos River
River Trail Park provides access to San Marcos River, a public body in Caldwell County, Texas. Species-specific size and bag limits can vary by water body and change seasonally, so always confirm current rules for San Marcos River specifically before you fish — statewide defaults don't always apply to every lake, river, or stretch of coast.
Check current regulations for San Marcos River →Fishing License
Fishing in Texas is regulated by the Texas Parks and Wildlife Department. Most anglers 16 and older need a valid license, with some exceptions for residents, youth, or shore-based fishing depending on the state.
Get a Texas fishing license →Before you cast a line, check:
- Size and bag limits for your target species on San Marcos River specifically
- Whether San Marcos River has any special regulations (slot limits, catch-and-release zones, closed seasons)
- Your license requirements based on age, residency, and whether you're fishing from the bank or a boat
- Any required stamps or endorsements for specific species (e.g. trout, saltwater)