Environmental Investigations Lead to a Safe, Clean, and Enjoyable River

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Illegal dumping site along the San Antonio River Basin

The San Antonio River Authority’s (River Authority) Environmental Investigation Team works daily to help protect the waterways in the San Antonio River Basin. Whether it be surveying the San Antonio River for unauthorized activities with a birds-eye view from a helicopter, or deploying an emergency response for a chemical spill, the team is responsive and thorough. Watersheds within the basin are frequently patrolled for illegal activity and environmental crimes. When an illegal activity is found, an investigation takes place to identify harmful impacts to water quality, riparian habitat, and human health and safety within the basin.

Read along as we highlight the efforts of our Environmental Investigation Team and how you can join us in our efforts to prevent illegal dumping to protect our creeks and rivers!

River Authority Environmental Investigation Efforts

Helicopter surveys are an important facet of environmental investigation and are generally conducted in the winter when trees have lost their leaves, allowing for a clearer view of the land. Team investigators will fly along the San Antonio River to collect observations throughout the waterway and floodplain. From the high vantage point, threats to the river come into focus. An example of what an investigator may see is a floodplain violation due to improper land development that will lead to unnatural erosion or the destruction of habitat. Illegal dumping sites that are secreted away from the road can also be unveiled in a helicopter survey.

Investigations also open when environmental concerns are reported to the River Authority. Whether it be a fish kill, unauthorized discharges, or illegal dumping, the team responds to complaints and communicates with landowners, state and local agency officials, regulatory officials, and the public as necessary to resolve and follow-up on emergency situations involving the creeks and rivers of the San Antonio River Basin.

The Environmental Investigation Team also works with the other teams across the River Authority to narrow in on the causes of any harmful impacts to the river as well as to maximize outcomes. For example, to investigate a fish kill, the Environmental Investigation Team works with other staff from the Environmental Sciences Department to have water samples analyzed for pollutants or work with the Watershed and Parks Operations Department to have debris and litter safely cleared from waterways.

Often, misuse of land which can cause harm to area creeks and rivers is due to lack of knowledge. Working and communicating with the public, including those who may have committed an environmental violation, are important duties of the Environmental Investigation Team. They educate the public about how abuse to waterways can degrade water quality and aquatic ecology, cause serious habitat destruction, and completely alter the hydrology of a creek or river. A call or visit by the River Authority’s Environmental Investigations Team to explain why something should not be done often stops destructive activities and behaviors.

Dangers of Illegal Dumping

Illegal dumping site along the San Antonio River Basin

Illegal dumping is not just an unsightly issue, but a hazardous one, too. Illegal dump sites can leach out toxic chemicals such as paints, unused prescription medication, and automotive fluids onto the ground for it to be washed off into the nearby waterways and seep into ground water supply. The litter and chemicals are also carried by stormwater runoff to the San Antonio River and its tributaries impacting water quality and harming its ecosystem. Water that collects in old tires and buckets can also breed mosquito populations that serve as vectors for disease.

The River Authority helps prevent illegal dumping by annually hosting six household hazardous waste collection events (two per year in Wilson, Karnes, and Goliad counties) where certified vendors collect and transport the hazardous waste so it can be properly recycled or disposed of according to state and federal laws.

It is important to learn and share information for proper dumping resources. We often partner with government entities throughout our four-county service district to support their local waste collection efforts and encourage you to visit your local government’s website to find out more about their drop-off locations and scheduling.

How You Can Help

Used electronics are collected as part of the Wilson County Household Hazardous Waste fall 2019 collection event.

If you see something dumped in or near the San Antonio River or its tributaries anywhere within the San Antonio River Basin that you are concerned about or believe may be illegal or hazardous, your first call should be to your local law enforcement office. Your second call should be to the River Authority’s Environmental Investigations Team toll free at 1 (866) 345-7272. You can also report your concerns online at our Contact Us page. The River Authority’s environmental investigators will make sure that the appropriate agencies with enforcement powers are contacted. They will also research solutions to the problem and keep the person who reported the concern informed of the investigation’s progress. If you live in Wilson, Karnes, or Goliad counties, please make sure you visit our events page to find out about our upcoming Household Waste Collection events and make plans to attend to join us in our efforts!  

Related Articles

Alerts

Stay Weather‑Aware This Weekend

Stay Weather‑Aware This Weekend

Rain is expected across the region this weekend, which may result in high water on roads and temporary closures at low water crossings.

Before heading out, residents are encouraged to check SARiverFlood.org or their local county flood website for real‑time roadway conditions:

These sites provide up‑to‑date information from flood‑monitoring sensors across the region. Real‑time updates are available 24/7 to help you stay informed as conditions change.

Please use caution when traveling and plan routes accordingly.

Restroom Closure Notice – Camino Coahuilteca (Acequia Park Trail)

 

Restroom Closure Notice – Camino Coahuilteca (Acequia Park Trail)

The restrooms at Camino Coahuilteca along the Acequia Park Trail will be temporarily closed on Thursday, April 16 due to parking lot improvements in the area.

We encourage visitors to plan accordingly and utilize nearby facilities during this time.

We appreciate your patience as we complete this work to enhance the park experience.

 

Museum Reach – Oxbow Trail Closure Notice

The Oxbow Trail along the Museum Reach will be temporarily closed beginning Monday, April 13 through May 1 to accommodate project-related work in the area.

For public safety, access to this section of the trail will be restricted during this time. Visitors are encouraged to plan accordingly and use alternate routes.

Wayfinding signage and trail closure notices will be posted at designated locations to help guide trail users around the closure.

We appreciate your patience and understanding as we complete this work to help maintain safe and enjoyable trail conditions.

San Pedro Creek Culture Park

The east bank trail along San Pedro Creek will be temporarily closed between the upper trail at Cameron St. and the lower trail at two access points.

Closure details:

  • The first closure will impact the connector from the upper trail near West Houston St. to the south lower San Pedro Creek trail.
  • Once work at this location is complete and the trail reopens, construction will shift to the second closure area between the upper and lower trails on the opposite side of the green space.

Please follow posted signage and plan alternate routes. We appreciate your patience as this work is completed.

Closed areas around San Pedro Creek Culture Park

The Brackenridge Trail

Trail Lighting Notice – Brackenridge Park Trail

Due to an electrical issue, lighting is currently out along the north portion of the trail, from the Josephine Street inlet to just past Highway 281 within the Brackenridge Park Trail. Our team is actively working to correct the issue and expects repairs to be completed by the end of business tomorrow.

We apologize for any inconvenience this may cause and appreciate your patience as we work to restore lighting. Please use caution when traveling through this area, especially during evening hours.

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. 

SASPAMCO Paddling Trail Temporarily Closed

Staff have removed two large log jams just downstream of Helton Nature Park, keeping the southern portion of the SASPAMCO Paddling Trail temporarily closed. Staff are working to contact adjacent landowners to support a land-based removal solution.

Goliad Paddling Trail Alert

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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