9
Extreme
Flood Risk in San Antonio, TX
Risk Level: Extreme — Score 9/10
FEMA: 9Historical: 10
Key Risk Factors
- FEMA rates San Antonio's county as Very High risk for this hazard
- Estimated annual loss of $365M from this hazard type
- 80 significant events recorded in proximity since 1950
- 28 events in the last 12 months indicate ongoing risk
- Average annual frequency: 7.5 events per year
Peak season: March-September
Last significant event: Flood - San Antonio, TX Region, United States (2025-05-30) — 1,670,000 people exposed
Highest Risk Cities for Floods
7
San Antonio, TX
FEMA: 9Historical: 10
How San Antonio Compares
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Notable Flood Events Near San Antonio
Flood - San Antonio, TX Region, United States
May 29, 2025 — WARNING
1,670,000 people exposed; $207,046M capital exposed
Flood - San Antonio, TX Region, United States
May 29, 2025 — WARNING
1,670,000 people exposed; $207,046M capital exposed
Flood - San Antonio, TX Region, United States
September 2, 2024 — WARNING
823,000 people exposed; $130,053M capital exposed
Flood - San Antonio, TX Region, United States
September 2, 2024 — WARNING
634,000 people exposed; $97,603M capital exposed
Flood - San Antonio, TX Region, United States
May 12, 2023 — WARNING
Impact data not available
Flood Preparedness Tips
- 1.Know if your property is in a flood zone — check FEMA maps
- 2.Consider flood insurance even if not in a high-risk zone
- 3.Never drive through flooded roadways — Turn Around, Don’t Drown
- 4.Move valuables and important documents to upper floors
- 5.Install sump pumps and check valves in plumbing
Related Pages
Earthquake Risk in San Antonio
Score: 3/10
Wildfire Risk in San Antonio
Score: 5/10
Hurricane Risk in San Antonio
Score: 5/10
Tornado Risk in San Antonio
Score: 9/10
Winter Storm Risk in San Antonio
Score: 7/10
Landslide Risk in San Antonio
Score: 3/10
Extreme Heat Risk in San Antonio
Score: 7/10
Drought Risk in San Antonio
Score: 5/10
High Wind Risk in San Antonio
Score: 7/10
Tsunami Risk in San Antonio
Score: 0/10
Flood Risk in Austin, TX
Score: 7/10
Flood Risk in Houston, TX
Score: 9/10
Flood Risk in Fort Worth, TX
Score: 7/10
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