Longview Washington sits at the confluence of the Cowlitz and Columbia rivers in one of the most industrially significant river corridors on the West Coast. The city hosts major aluminum, paper, and chemical manufacturing operations. Mount St Helens sits approximately 50 miles northeast — the Cowlitz River is the primary lahar flow path from a future eruption, and Longview sits in the path of potential lahar flows. The 1980 Mount St Helens eruption sent a massive debris flow down the Cowlitz that threatened the city. Columbia River flooding is a secondary risk.
// Preparedness Recommendations
- Evacuation routes inland should be identified in advance.
- Store at least 72 hours of food and water.
- Elevate critical belongings above flood level.
- Have backup power ready in case of grid failure.
// 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 | 8 / 10 High |
| Primary Hazard | Chemical / Industrial / Volcano / Flooding |
| FEMA Flood Zone | Moderate |
| County FEMA Declarations | 7 |
| Last Major Event | Mt. St. Helens 1980 |
// Emergency Information
| Emergency Phone | 360-442-5000 |
| Evacuation Routes | State and US highways |
| Elevation | 15 ft above sea level |