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As the Authority in flood safety, keeping lives, property, and our natural environment safe and secure from the devastating effects of major flooding is a top concern for the San Antonio River Authority (River Authority). The River Authority is meeting the challenge with comprehensive planning, precision protection, strategic partnerships, and community preparedness.

Along with maintaining over 40 dams and other flood control structures, the River Authority also advocates for development techniques designed to reduce runoff and improve water quality. Below, learn more about what the River Authority does when it comes to flood safety, and how you can be prepared before, during and after a devastating flood.

We Care About Your Safety!

Draft Floodplain Maps & Public Meetings

Learn more about flooding  

Learn more about flood Risk mitigation


Prepare icon
  • Prepare a family disaster plan.
  • Make an itemized list of personal property well in advance. Photograph or video the interior and exterior of your home.
  • Keep insurance, important documents, and other valuable items in a safe deposit box.
  • Assemble a disaster supplies kit.
  • Find out where you can go if ordered to evacuate.
  • Make a keep-in-touch arrangement with relatives and friends.
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Stay up-to-date with
Bexar flood . org provides current flood information and emergency road closures

If forced to leave your property and time permits, move essential items to safe ground, fill tanks to keep them from floating away and grease immovable machinery.

Store a supply of drinking water in clean bathtubs and in large containers.

Get out of areas subject to flooding. This includes dips, low spots, floodplains, etc.

Stay Informed: Listen to radio and TV outlets

Get to Higher Ground: If you live in a flood prone area or are camping in a low lying area, get to higher ground immediately.

Obey Evacuation Orders: If told to evacuate, do so immediately. Lock your home when you leave. If you have time, disconnect utilities and appliances.

  • Avoid areas subject to sudden flooding.
  • Do not attempt to drive over a flooded road. STOP! Turn around and go another way.
  • Never try to walk, swim or drive through such swift water.
  • Keep children from playing in floodwaters or near culverts and storm drains.
After Rainbow
  • Pay attention to authorities for information and instructions. If evacuated, return home only when authorities say it is safe.
  • Boil drinking water before using. If fresh food has encounter floodwaters, throw it out.
  • Seek necessary medical care at the nearest hospital. Food, clothing, shelter and first aid are available at Red Cross shelters.
  • Use flashlights, not lanterns or torches, to examine buildings. Flammables may be inside.
  • Wear proper protective equipment during cleanup.
  • Do not handle live electrical equipment in wet areas. Electrical equipment should be checked and dried before being returned to service.