Founded in 1985 to preserve public access to the San Marcos River and protect the flow, natural beauty and purity of the river, its watershed and estuaries for future generations.

To learn about swimming, diving, boating and camping on the San Marcos River, as well as the endangered species found in the river, see the River Info category.


SMRF, often pronounced smurf, is the acronym for the Foundation. Read on this site about the many projects of SMRF, including its precedent-setting Water Right Application to keep Texas rivers flowing. Learn more about SMRF's history, volunteer activities and board members. Check out the many years of quarterly SMRF newsletters to learn about the many successes of SMRF over the past two decades.

Look over the calendar for ways to participate, and contact SMRF today! Join SMRF and help protect
the San Marcos River for future generations.