Austin, Texas Flood Zones
Austin sits along the Colorado River and Balcones Fault Zone, creating severe flash flood risk. Shoal Creek, Waller Creek, and Onion Creek have produced deadly flash floods, and the region is known as Flash Flood Alley.
Common Flood Zones in Austin
Properties in Austin, TX are commonly designated in these FEMA flood zones:
Check Your Austin Address
Enter any Austin, TX address to instantly see its FEMA flood zone, risk level, and whether flood insurance is required.
Free Flood Zone LookupWhat Your Flood Zone Means in Austin
FEMA assigns flood zone designations to every property in the United States based on flood risk assessments. In Austin, the most common designations are Zone AE, Zone AO, Zone X.
Properties in Special Flood Hazard Areas (SFHAs) - zones starting with A or V - are required to carry flood insurance if they have a federally-backed mortgage. Properties in Zone X are outside the SFHA and flood insurance is typically optional but often recommended.
Flood zone designations can change over time through Letters of Map Amendment (LOMA) or Letters of Map Revision (LOMR). Use our free lookup tool to check the current flood zone for any Austin address.