Keeping creeks and rivers, property, and our natural environment safe, secure, clean, and enjoyable.

Our Work

The San Antonio River Authority (River Authority) was created by the 45th Texas in 1937 and reorganized in 1961 to plan, manage, and implement water-related programs and projects within the San Antonio River Basin. Today, the River Authority has jurisdiction in Bexar, Wilson, Karnes and Goliad counties, and stands as a leader in flood and storm water management, water quality monitoring and analysis, ecosystem restoration, environmental science, wastewater treatment, and nature-based recreation.

The River Authority has long served as the local sponsor for the US Army Corps of Engineers on channel and river improvement projects, including the San Antonio River Channel Improvements Project, the Mission Reach Ecological Restoration Project, and the on-going West Side Creeks Ecosystem Restoration Project. The River Authority is a lead advocate for natural infrastructure in the region. The River Authority has also developed water quality modeling tools that take information from models and not only help to identify and quantify issues related to stream quality degradation, but also to quantify mitigation strategies. These tools generate comprehensive information which can be valuable in strategically panning for either preservation or mitigation of waterbodies.

The River Authority is meeting the challenge with comprehensive planning, precision protection, strategic partnerships, and community preparedness.

The team of Aquatic Biologists, Water Quality and Stormwater Scientists, and Environmental Investigators at the San Antonio River Authority work to monitor and improve the health of the San Antonio River.

Green spaces, flowing waters, and cultural and historical sites provide the perfect setting for hiking, biking, paddling, fishing, bird-watching, picnicking and a myriad of other recreational resources for your family to enjoy.

In The News

  • San Antonio Project Turns Flood Control Channel into Thriving Urban Ecosystem

    San Antonio Project Turns Flood Control Channel into Thriving Urban Ecosystem

    San Antonio Project Turns Flood Control Channel into Thriving Urban Ecosystem By Lee Marlowe, Sustainable Landscape Ecologist The Mission Reach Ecosystem Restoration and Recreation Project covers hundreds of acres of the San Antonio River and its riparian zone just south of downtown San Antonio. It has also led to an expansion of San Antonio’s famous…

Board of Directors ↗

Meet our 12-member board of elected members.

Projects ↗

Check out our water quality studies, pollution investigations, and other research.

Maps and Data ↗

Explore our GIS resources for solutions in our community and agency.