Rieger
Key Takeaway
Rieger is classified as significant hazard in Montana. It was completed in 1958 and is 68 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 21 ft (taller than 61.7% in MT) |
| Dam Length | 300 ft |
| Dam Type | Earth |
| Normal Storage | 93 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 6,976 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1958 (68 years old) |
| Year Modified | 2015 |
| NID ID | MT01043 |
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
DONALD RIEGER
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Rieger?
Rieger 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 Rieger?
Rieger is owned by DONALD RIEGER (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Rieger built?
Rieger was completed in 1958, making it 68 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 Rieger?
Rieger 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 Rieger?
Rieger has a dam height of 21 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.