High Risk 🌊 Major Dam / Flood Control  ·  Montana

Hungry Horse Dam MT

CRITICAL INFRASTRUCTURE RISK PROFILE  ·  MONTANA

7 / 10
Risk Score
Facility Type
🌊 Major Dam / Flood Control
Primary Risk Radius
20
mile zone
Secondary Risk Radius
100
mile zone

// Risk Intelligence

Risk Score7 / 10   High
Facility Type🌊 Major Dam / Flood Control
Operator / BranchBureau of Reclamation
Host CountyFlathead County MT
Nearest CityWashington DC
Primary Risk Radius20 miles
Secondary Risk Radius100 miles

// Strategic Significance

Hungry Horse Dam on the South Fork Flathead River is one of the largest concrete arch dams in the US at 564 feet. It sits in a seismically active region near Glacier National Park. A failure would send water into the Flathead River system threatening Kalispell and Flathead Lake.

// Civilian Impact Assessment

Kalispell MT with 24,000 residents and Flathead Lake communities face serious flooding risk. The Flathead River valley is densely developed relative to its flood capacity.

// Evacuation & Shelter Guidance

US-2, Montana Route 486. Flathead County Emergency Management coordinates with Bureau of Reclamation for dam emergency response.

// Counties Within Risk Zone