San Antonio River Authority Work to Safely Relocate Native Fish Species during River Walk Draining

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WHAT: The San Antonio River Authority (River Authority) will conduct operations and maintenance activities as a part of the City of San Antonio’s (COSA) draining of portions of the San Antonio River along the River Walk. The section the River Authority will focus on the Museum Reach from Pearl to Lexington Ave. River Authority staff will leverage the opportunity of lower water to perform preventative maintenance and improve the river’s habitat function by planting aquatic native plants. In addition to operations and maintenance activities, crews from the River Authority’s Environmental Sciences Department will be serving as the lead biologists throughout the entire River Walk area during the draining. The River Authority’s scientific staff will be working to save and relocate native aquatic species to other appropriate parts of the river while removing any non-native invasive species. They will also be on the lookout for non-native invasive fish species like the Plecostomus (suckermouth catfish) and tilapia, and the non-native invasive Apple Snail, which was discovered in the River Walk in October 2019. The operations and maintenance work, as well as the biological efforts, are all part of the River Authority’s commitment to safe, clean, enjoyable creeks and rivers.

WHEN: Tuesday, January 25, 2022 @ 10:00 a.m.

WHO: Chris Vaughn, San Antonio River Authority Senior Aquatic Biologist

WHERE: River Authority staff will be available for interviews related to the aquatic species work at the intersection of Alamo Street at Commerce Street near Lone Star Café. Nefi Garza, P.E., City of San Antonio’s Public Works Assistant Director will be onsite and speak to the river drainage process. Tommy Mitchell, San Antonio River Authority Watershed and Park Operations Senior Superintendent will also be onsite for questions related to operations and maintenance activities.

NOTES: Citizens are encouraged to help stop the spread of non-native invasive aquatic species by never dumping aquarium contents in a Texas river, lake, or natural body of water. Community members can also help by reporting any sightings of non-native invasive species within the San Antonio River Basin to the River Authority’s Environmental Investigations Team at sariverauthority.org or by contacting the Texas Parks and Wildlife Department (TPWD). Visit TPWD’s www.texasinvasives.org website to learn more.

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Restroom Closure Notice
The AME Men’s Restroom will be closed Monday, November 17 through Tuesday, November 18, 2025 for scheduled maintenance.
We appreciate your patience while our team completes this work.

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The restroom at Espada Park will be temporarily closed due to a water leak. Our team is working to resolve the issue as quickly as possible. We appreciate your patience and understanding!

Mission Reach Area Maintenance

When: Beginning October 20, 2025 through Spring 2026
What: Crews will be performing stem-density removal and related vegetation maintenance along sections of the Mission Reach to help manage flood risk and protect surrounding infrastructure. Some trails or segments may be closed temporarily while work is underway.
Why: Removing excess stems that naturally establish along the river helps maintain stormwater conveyance, reduces flood risk, and protects public infrastructure while allowing grassland and native vegetation to recover and thrive.
What to expect:

  • Limited trail closures and intermittent work zones.
  • Crews and equipment working near the riverbanks during daytime hours.
  • Parking areas remain open, but visitors may see signage and temporary barriers.

Questions? Call the San Antonio River Authority at (210) 227-1373 or visit https://www.sariverauthority.org/services/river-health/ecosystems/.

Thank you for your patience while we keep the Mission Reach safe, clean, and enjoyable.

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Trail Closure Alert – Calder Alley, San Pedro Creek

Maintenance work will be done in Calder Alley starting Wednesday, September 18, 2025.

  • Trails will remain open during this work.
  • One bench at a time will be temporarily barricaded while improvements are completed.
  • There may be occasional contractor pickups in the area.

We appreciate your patience as we continue to maintain and improve San Pedro Creek for all to enjoy!

SASPAMCO Paddling Trail

The SASPAMCO paddling trail is open from River Crossing Park to Helton Nature Park.
*Please Note: Paddling Trail from Helton Nature Park to HWY 97 is still closed due to blockages. 

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NOTICE: HWY 59 Landing Site Closed

Due to TxDOT construction on the HWY 59 Bridge, the HWY 59 landing site is closed until further notice. However, the Goliad Paddling Trail remains open, and paddlers can still access the river at the Riverdale, Ferry Street, and Goliad State Park landings.

Please plan accordingly and check back for updates.

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