Glen Canyon Dam AZ — Infrastructure Risk Profile

// Risk Intelligence

Risk Score	8 / 10 High
Facility Type	🌊 Major Dam / Flood Control
Operator / Branch	Bureau of Reclamation
Host County	Coconino County AZ
Nearest City	Pepperell MA
Primary Risk Radius	100 miles
Secondary Risk Radius	300 miles

// Strategic Significance

Glen Canyon Dam creates Lake Powell — the second largest reservoir in the US by volume and a critical water storage facility for the Colorado River Compact supplying seven states. The dam generates 1320 megawatts of hydroelectric power for the Southwest grid. Lake Powell has been at critically low levels due to Western drought raising concerns about the dam's long-term viability and highlighting Colorado River water security issues for the entire American Southwest.

// Civilian Impact Assessment

A Glen Canyon Dam failure would send floodwaters through the Grand Canyon toward Lake Mead and Hoover Dam potentially triggering a cascading failure of downstream dams. Communities along the Colorado River from Page AZ through the Grand Canyon corridor and downstream communities in Nevada Arizona and California would face catastrophic flooding. The loss of Lake Powell storage would devastate water supplies for the entire Southwest.

// Evacuation & Shelter Guidance

Page AZ and communities along the Colorado River downstream of Glen Canyon Dam should know high ground evacuation routes. The Grand Canyon itself provides no practical evacuation — visitors and residents should move to canyon rims immediately. Monitor Arizona Division of Emergency Management broadcasts. Downstream communities along the Colorado River should monitor river gauge levels.