// Risk Intelligence
| Risk Score | 8 / 10 High |
| Facility Type | 🌊 Major Dam / Flood Control |
| Operator / Branch | US Army Corps of Engineers |
| Host County | Multnomah County OR |
| Nearest City | Pepperell MA |
| Primary Risk Radius | 30 miles |
| Secondary Risk Radius | 100 miles |
// Strategic Significance
Bonneville Dam provides significant hydroelectric power and locks for Columbia River navigation. The dam sits in the Cascadia Subduction Zone earthquake zone and a major Cascadia earthquake could damage the dam simultaneously.
// Civilian Impact Assessment
Multnomah County with 800,000 residents and Portland metro with 2.5 million residents. Cascadia earthquake could simultaneously damage Bonneville Dam and trigger tsunamis in the Columbia River Gorge.
// Evacuation & Shelter Guidance
I-84, US-30, Columbia River. Multnomah County Emergency Management coordinates Cascadia earthquake and dam failure protocols.