River Authority Spotlight: Geographic Information Science Team

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Members of the River Authority's Geographic Information Systems team.

Last Updated on January 30, 2024

The San Antonio River Authority (River Authority) relies on the expertise of its engineers, scientists, technical, and specialized staff to carry out the agency’s commitment to safe, clean, and enjoyable creeks and rivers. While you may see our staff from Watershed & Parks Operations, Utilities, and Environmental Sciences departments out in the field performing work throughout the San Antonio River Basin, our agency also thrives thanks to the efforts of our Support Services staff who provide critical assistance to help support the River Authority’s financial, technological, and project management needs.

We will be highlighting the work of our Support Services staff in our blog, starting with the Geographic Information Science (GIS) team. Read along to learn more about their work and how their efforts support the success of many River Authority projects and initiatives!

GIS Team Efforts

Operating within the Informational Technology Department, the GIS Team functions as a support service for the River Authority turning data into geospatial intelligence. The team works on a variety of unique and highly specialized projects that span across the River Authority’s four-county jurisdiction through insightful analysis and compelling visualizations that support sound, data-based decision making. The team’s line of work is not only unique, but it’s also extremely important for the integrity of the ever-evolving San Antonio River Basin. Their work is present in almost every aspect of the agency, incorporating maps and geospatial insights into company communications with every opportunity available. In addition to supporting good decision making, the team’s goals are to empower users with geographic thinking and continue being data champions for the region by demonstrating geospatial excellence.

The GIS team’s work has been invaluable in the successful completion of several projects at the River Authority. Some recent examples include the Mission Reach Stem Density Project led by our Watershed & Parks Operations and Ecological Engineering departments. The project involved a study using the latest modeling and technology to assess the management of trees and woody species within the project limits. This was done to ensure that the density of the trees, both planted as part of the project and those that have come in naturally, are appropriately maintained to preserve flood conveyance along the San Antonio River Walk Mission Reach. The team also played a role in the Green Infrastructure Master Plan Contract, where watershed scale models were used to identify sub-basins or small watersheds that have the highest stormwater pollutant load reduction potential. This will help guide decision-makers on where and how to apply limited resources in the upcoming years to maximize water quality benefits while addressing local flooding concerns.

The GIS team is also responsible for developing and updating many of the River Authority’s flood risk, real estate, watershed master plans, and water quality interactive GIS viewers that are capable of displaying large amounts of data in an attractive, engaging, and user-friendly format. The team is often asked by regional partners and educational institutions to present on their work and share their expertise to other professionals and students, helping raise the agency’s profile within the technical field.

Learn More by Requesting a River Authority Community Presentation! 

Staff from the River Authority's Geographic Information Systems team conducting a public presentation

Interested in learning more about the River Authority?  We offer community presentations that include a wide variety of important River Authority information such as how to assess your home’s flood risk, a review of San Antonio River Basin water quality, an explanation about the significance of sustainable, green infrastructure, details about the parks and paddling trails along the river, and ways that you can Be River Proud and join us in our efforts to protect and preserve area creeks and rivers. You can also request a presentation about a specific topic or area of expertise like our GIS Team efforts. Requests are filled on a first come, first served basis so request yours today!  

Related Articles

Alerts

Mission Reach Area Maintenance

Update (December 2025):
Crews will be moving south of Concepcion Park towards the baseball fields around the Mission Road area. The trail in this section will be closed the morning of Wednesday 12/10 and is expected to reopen the later next week. 

Work will also continue at the current location near mile marker 8.2 for the remainder of the week, where crews will be cleaning the area and hauling off chips and debris. This section of the trail will remain open

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.

Stem Density work 12.10.2025-12.19.2025

Trail Closure – Mission Reach Area

The Acequia Park trailhead entrance at Probandt Street to the Bexar County Public Works Department building’s trailhead will be closed through December 23rd due to construction. We apologize for the inconvenience.

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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