Gollaher Reservoir
Key Takeaway
Gollaher Reservoir is classified as significant hazard in Montana. It was completed in 1945 and is 81 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 38 ft (taller than 94.3% in MT) |
| Dam Length | 1,130 ft |
| Dam Type | Earth |
| Max Storage | 827 acre-ft |
| Normal Storage | 613 acre-ft |
| Surface Area | 41 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 525 cfs |
| Year Completed | 1945 (81 years old) |
| Year Modified | 1950 |
| NID ID | MT00204 |
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
GOLLAHER RANCH CO.
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Gollaher Reservoir?
Gollaher Reservoir 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 Gollaher Reservoir?
Gollaher Reservoir is owned by GOLLAHER RANCH CO. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Gollaher Reservoir built?
Gollaher Reservoir was completed in 1945, making it 81 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 Gollaher Reservoir?
Gollaher Reservoir 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 Gollaher Reservoir?
Gollaher Reservoir has a dam height of 38 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.