9
Extreme
Flood Risk in San Jose, CA
Risk Level: Extreme — Score 9/10
FEMA: 9Historical: 10
Key Risk Factors
- FEMA rates San Jose's county as Very High risk for this hazard
- Estimated annual loss of $720M from this hazard type
- 67 significant events recorded in proximity since 1950
- 23 events in the last 12 months indicate ongoing risk
- Average annual frequency: 2.1 events per year
Peak season: March-September
Last significant event: Flood - Santa Cruz County, California, United States (2026-01-05) — 42,300 people exposed
Highest Risk Cities for Floods
10
San Jose, CA
FEMA: 9Historical: 10
How San Jose Compares
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Notable Flood Events Near San Jose
Flood - San Francisco Bay Area, California, United States
December 24, 2025 — ADVISORY
874,000 people exposed; $242,696M capital exposed
Flood - San Mateo _ Santa Cruz, California, United States
November 12, 2025 — ADVISORY
27,500 people exposed; $2,926M capital exposed
Flood - Santa Cruz County, California, United States
January 4, 2026 — ADVISORY
42,300 people exposed; $7,438M capital exposed
Flash Flood - San Mateo County, California, United States
December 24, 2025 — WARNING
403,000 people exposed; $127,210M capital exposed
Flood - San Mateo _ Santa Cruz Counties, California, United States
December 23, 2025 — ADVISORY
522,000 people exposed; $177,412M capital exposed
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 Jose
Score: 9/10
Wildfire Risk in San Jose
Score: 5/10
Hurricane Risk in San Jose
Score: 0/10
Tornado Risk in San Jose
Score: 3/10
Winter Storm Risk in San Jose
Score: 1/10
Landslide Risk in San Jose
Score: 7/10
Extreme Heat Risk in San Jose
Score: 7/10
Drought Risk in San Jose
Score: 7/10
High Wind Risk in San Jose
Score: 1/10
Tsunami Risk in San Jose
Score: 1/10
Flood Risk in Oakland, CA
Score: 9/10
Flood Risk in San Francisco, CA
Score: 7/10
Flood Risk in Sacramento, CA
Score: 7/10
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