Hays
Key Takeaway
Hays is classified as low hazard in Montana. It was completed in 1957 and is 69 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 18 ft (taller than 36.9% in MT) |
| Dam Length | 575 ft |
| Dam Type | Earth |
| Max Storage | 75 acre-ft |
| Normal Storage | 53 acre-ft |
| Year Completed | 1957 (69 years old) |
| NID ID | MT00480 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
A R HAYS
Private
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Low Hazard 15 ftFrequently Asked Questions
What is the hazard classification of Hays?
Hays is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Hays?
Hays is owned by A R HAYS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hays built?
Hays was completed in 1957, making it 69 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 Hays?
Hays 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 Hays?
Hays has a dam height of 18 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.