Clark County anchored by Vancouver directly across from Portland Oregon sits in the lahar flow paths from both Mount St. Helens to the north and Mount Hood to the east. The May 18 1980 eruption of Mount St. Helens — the deadliest volcanic disaster in US history — killed 57 people and impacted Clark County significantly. Cascadia Subduction Zone earthquake risk is serious. The Lewis and Clark Highway crosses through the county connecting Pacific coast communities.
// Recommended Supplies
Essential gear for power outages, severe weather, and emergency situations in your area.
- Emergency Food Supplies
- Water Filtration & Storage
- Backup Generator
- Solar Backup Power
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// Risk Intelligence
| Threat Score | 6 / 10 Moderate Risk |
| Primary Hazard | Volcanic / Earthquake |
| Secondary Hazard | Lahar / Flash Flooding |
| FEMA Flood Zone | High |
| Federally Declared Disasters | 7 |
| Last Major Event | Mt. St. Helens 1980 |
| Event Frequency | Annual |
// Emergency Operations
| Emergency Mgmt Phone | (360) 695-2273 |
| Emergency Shelters | 14 designated facilities |
| Evacuation Routes | I-5 I-205 WA-14 WA-500 |
// County Profile
| County | Clark County WA |
| State | Washington (WA) |
| Population | 491 |
| Area | 656 sq miles |
| FEMA Region | High |
// Major Cities
// Cities in This County
// Other Washington Counties
// Nearby Infrastructure Risks
Critical infrastructure facilities within or near this area that could affect civilian safety during emergencies, conflict, or infrastructure failures.
Infrastructure risk data is for emergency preparedness awareness. Facility locations are publicly known. Always follow official emergency guidance.