Gray #3
Key Takeaway
Gray #3 is classified as low hazard in Montana. It was completed in 1949 and is 77 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 26 ft (taller than 77.8% in MT) |
| Dam Length | 330 ft |
| Dam Type | Earth |
| Max Storage | 300 acre-ft |
| Normal Storage | 182 acre-ft |
| Year Completed | 1949 (77 years old) |
| NID ID | MT01447 |
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
ROBERT J GRAY
Private
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Low Hazard 20 ftFrequently Asked Questions
What is the hazard classification of Gray #3?
Gray #3 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 Gray #3?
Gray #3 is owned by ROBERT J GRAY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Gray #3 built?
Gray #3 was completed in 1949, making it 77 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 Gray #3?
Gray #3 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 Gray #3?
Gray #3 has a dam height of 26 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.