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Floodplain Mapping

Floodplain Mapping

The San Antonio River Authority Floodplain Viewer engages users in an interactive floodplain map, displaying the Federal Emergency Management Agency’s (FEMA) National Flood Hazard Layer (NFHL) data. Together with its many Bexar Regional Watershed Management (BRWM) partners, the San Antonio River Authority performs engineering studies to develop the data used in these digital maps, providing basic information about the floodplains in Bexar, Wilson, Karnes and Goliad counties.

Reduce Your Flood Risk

Project Details:

  • Active
  • Adopted Budget: $595000
  • Start Date: 2021-07-21
  • End Date: 2024-06-30
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Alerts

San Antonio River Walk Draining

January 10, 2025

Beginning Monday, January 13 through Friday, January 17, a small section of the San Antonio River will be drained as part of the River Walk Maintenance Program. The work will not affect the River Walk loop and Go Rio boat service will continue to operate in the river loop area. For more information, please refer to the City of San Antonio’s website.

Stem Density Efforts

January 9, 2025

Please be advised that trails near the Confluence Park and Conception Park area will be temporarily closed due to ongoing Stem Density efforts. We appreciate your cooperation and ask that you remain mindful of workers and closures when in the vicinity. Thank you for your patience as we work to improve our natural spaces!

 Stem Density efforts in the Eagle Land segment will be extended through the end of February 2025.

Trail Closure Alert – Roosevelt Park

January 9, 2025

The trail on the east bank of the river, from north of Steve’s Avenue to Roosevelt Park, will close today, January 6, and reopen on Thursday afternoon, January 9.

Next week, the trail will be closed again from January 13 to January 17 as work resumes in the area.

This closure is in conjunction with our STEM Density work. Thank you for your understanding as we enhance our trails!

SASPAMCO Paddling Trail Temporarily Closed

November 20, 2024

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.

SASPAMCO Paddling Trail

May 6, 2024

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. 

Current Conditions

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