East Boulder Tailings Dam
Key Takeaway
East Boulder Tailings Dam is classified as high hazard in Montana. Its primary use is tailings. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Max Storage | 460 acre-ft |
| Normal Storage | 153 acre-ft |
| Surface Area | 103 acres |
| Drainage Area | 0 sq mi |
| NID ID | MT03989 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
STILLWATER MINING CO
Private
Frequently Asked Questions
What is the hazard classification of East Boulder Tailings Dam?
East Boulder Tailings Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates East Boulder Tailings Dam?
East Boulder Tailings Dam is owned by STILLWATER MINING CO (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
What is the primary purpose of East Boulder Tailings Dam?
East Boulder Tailings Dam serves the following purposes: Tailings. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was East Boulder Tailings Dam last inspected?
East Boulder Tailings Dam was last inspected on February 9, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.