Hyades
Key Takeaway
Hyades is classified as low hazard in Montana. It was completed in 1956 and is 70 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 12 ft (taller than 9.2% in MT) |
| Dam Length | 40 ft |
| Dam Type | Earth |
| Max Storage | 158 acre-ft |
| Normal Storage | 20 acre-ft |
| Year Completed | 1956 (70 years old) |
| NID ID | MT03626 |
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
GREEN COULEE RANCH
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Hyades?
Hyades 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 Hyades?
Hyades is owned by GREEN COULEE RANCH (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hyades built?
Hyades was completed in 1956, making it 70 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 Hyades?
Hyades 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 Hyades?
Hyades has a dam height of 12 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.