Natural Hazard Risk in California
58 counties — Overall risk: Very High
📊
Counties
58
👥
Population
39,501,350
⚠️
Overall Risk
88.7
Very High
🔥
Wildfire Risk
94.2
Very High
Hazard Risk Overview
🔥
Wildfire
94.2
Very High🏔️
Earthquake
93.1
Very High⛰️
Landslide
89.0
Very High🌊
Riverine Flooding
85.8
Very High☀️
Drought
79.5
Very High🌡️
Heat Wave
75.1
Very High🏖️
Coastal Flooding
67.7
Very High🌋
Volcanic Activity
63.5
Very High⚡
Lightning
54.1
Very High🌊
Tsunami
52.4
Very HighHighest Risk Counties in California
All 58 Counties in California
| County | Risk Score | Rating | Top Hazard |
|---|---|---|---|
| Los Angeles | 100.0 | ||
| Riverside | 99.9 | ||
| Alameda | 99.8 | ||
| Orange | 99.8 | ||
| San Bernardino | 99.8 | ||
| San Diego | 99.7 | ||
| Santa Clara | 99.7 | ||
| Contra Costa | 99.5 | ||
| San Francisco | 99.5 | ||
| Ventura | 99.4 | ||
| Fresno | 99.3 | ||
| San Mateo | 99.2 | ||
| Sonoma | 99.1 | ||
| Santa Barbara | 99.0 | ||
| Kern | 98.9 | ||
| Monterey | 98.7 | ||
| San Joaquin | 98.6 | ||
| Sacramento | 98.1 | ||
| Santa Cruz | 97.8 | ||
| Solano | 97.0 | ||
| Tulare | 97.0 | ||
| Merced | 96.9 | ||
| Stanislaus | 96.9 | ||
| Humboldt | 96.8 | ||
| Imperial | 96.5 | ||
| Madera | 96.4 | ||
| Marin | 96.4 | ||
| San Luis Obispo | 95.9 | ||
| Napa | 95.3 | ||
| Del Norte | 94.4 | ||
| Mendocino | 94.3 | ||
| Butte | 93.9 | ||
| Shasta | 93.4 | ||
| Placer | 93.1 | ||
| Lake | 93.0 | ||
| Kings | 92.4 | ||
| El Dorado | 91.4 | ||
| Yolo | 91.4 | ||
| Nevada | 89.9 | ||
| Siskiyou | 89.0 | ||
| Tehama | 88.9 | ||
| Calaveras | 86.6 | ||
| Mariposa | 86.4 | ||
| Plumas | 86.4 | ||
| San Benito | 85.2 | ||
| Tuolumne | 85.2 | ||
| Sutter | 83.7 | ||
| Colusa | 81.1 | ||
| Yuba | 80.9 | ||
| Trinity | 79.5 | ||
| Inyo | 79.3 | ||
| Amador | 79.2 | ||
| Glenn | 74.4 | ||
| Lassen | 73.1 | ||
| Mono | 46.5 | ||
| Modoc | 39.7 | ||
| Sierra | 31.5 | ||
| Alpine | 10.6 |