Contra Costa County, California
Natural Hazard Risk Assessment — Population: 1,165,466
99.5NRI
Very High
Overall Risk Rating
👥
Population
1,165,466
🏠
Building Value
$245.2B
💰
Annual Hazard Loss
$970.5M
⚠️
Hazards Tracked
16
Natural Hazard Risk Profile
🏔️
Relatively HighEarthquake
Annual Loss$518.8M
Risk Score99.7
🌊
Very HighRiverine Flooding
Annual Loss$412.5M
Risk Score99.5
⛰️
Relatively HighLandslide
Annual Loss$2.4M
Risk Score99.3
🌡️
Relatively HighHeat Wave
Annual Loss$17.8M
Risk Score98.3
🔥
Relatively ModerateWildfire
Annual Loss$10.8M
Risk Score97.6
☀️
Relatively HighDrought
Annual Loss$2.8M
Risk Score94.6
⚡
Relatively HighLightning
Annual Loss$1.5M
Risk Score90.8
🌋
Very LowVolcanic Activity
Annual Loss$343
Risk Score77.9
Show all 16 hazards
🏖️
Relatively ModerateCoastal Flooding
Annual Loss$1.0M
Risk Score66.0
🌪️
Relatively LowTornado
Annual Loss$1.4M
Risk Score49.9
🌊
Relatively LowTsunami
Annual Loss$1.0M
Risk Score47.7
💨
Relatively LowStrong Wind
Annual Loss$398K
Risk Score34.4
🧊
Very LowHail
Annual Loss$157K
Risk Score33.0
⛄
Very LowWinter Weather
Annual Loss$8K
Risk Score9.2
🏔️
Very LowAvalanche
Annual Loss$3
Risk Score5.3
🥶
No RatingCold Wave
Annual Loss$0
Risk Score0.0
Contra Costa County vs. National Average
🎯 Overall Risk
99.5+50.8 vs avg
National avg: 48.7
🔥 Wildfire Risk
97.6+48.9 vs avg
National avg: 48.7
👥 Social Vulnerability
21.5-27.7 vs avg
National avg: 49.2
🛡️ Community Resilience
67.8+19.1 vs avg
National avg: 48.7
Community Profile
Social Vulnerability
21.5
Relatively LowHigher scores indicate greater social vulnerability to natural hazards.
Community Resilience
67.8
Relatively HighHigher scores indicate better ability to prepare for, adapt to, and recover from hazards.
Frequently Asked Questions
Data from FEMA National Risk Index. For informational purposes only. Consult local authorities for property-specific risk.