6 inches of water
- Six inches of fast-moving floodwater can knock over an adult.
- Water may be moving more rapidly than it appears.
- Tires can lose traction.
12 inches of water
- One foot of rushing floodwater can sweep away a small car.
- Tires can act as flotation devices, lifting vehicles.
- Water may rise even higher in the time it takes to cross a flooded road section.
24 inches of water
- Most vehicles, including trucks and SUVs, are at risk of being carried away.
- Water may hide potholes or gouged roadbeds and may be deeper than it appears.
- It is often more difficult to judge water depth at night.
Known flood risks and low water crossings
The city of Austin Flood Early Warning System team monitors weather and road conditions and maintains a listing of roadways susceptible to flooding. This map depicts low water crossings but is not comprehensive.
Flash flood safety tips
- Do not drive during heavy rainfall.
- Check www.atxfloods.com to see if any roads have already been flooded.
- Be alert for water covering the road.
- Do not attempt to cross flooded roadways.
- Avoid known low water crossings.
- Stay away from creeks and drainage infrastructure during rainfall.
- During stormy weather, do not park along streams.