Tub Lake Dam
Key Takeaway
Tub Lake Dam is classified as significant hazard in Montana. It was completed in 1904 and is 122 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 13 ft (taller than 14.7% in MT) |
| Dam Length | 169 ft |
| Dam Type | Earth |
| Max Storage | 208 acre-ft |
| Normal Storage | 136 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 55 cfs |
| Year Completed | 1904 (122 years old) |
| NID ID | MT00822 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
BEAVERHEAD WATER CO
Private
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High Hazard 13 ftFrequently Asked Questions
What is the hazard classification of Tub Lake Dam?
Tub Lake Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Tub Lake Dam?
Tub Lake Dam is owned by BEAVERHEAD WATER CO (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Tub Lake Dam built?
Tub Lake Dam was completed in 1904, making it 122 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Tub Lake Dam?
Tub Lake Dam serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Tub Lake Dam?
Tub Lake Dam has a dam height of 13 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Tub Lake Dam last inspected?
Tub Lake Dam was last inspected on July 24, 2014. Inspection dates indicate when a formal review occurred, not the results of that inspection.