Gray 13
Key Takeaway
Gray 13 is classified as low hazard in Montana. It was completed in 1940 and is 86 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 20 ft (taller than 44.5% in MT) |
| Dam Length | 175 ft |
| Dam Type | Earth |
| Max Storage | 219 acre-ft |
| Normal Storage | 135 acre-ft |
| Surface Area | 0 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1940 (86 years old) |
| NID ID | MT01969 |
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
U.S. D.O.I. B.L.M.
Federal Government
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Low Hazard 17 ftFrequently Asked Questions
What is the hazard classification of Gray 13?
Gray 13 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 13?
Gray 13 is owned by U.S. D.O.I. B.L.M. (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Gray 13 built?
Gray 13 was completed in 1940, making it 86 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 13?
Gray 13 serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Gray 13?
Gray 13 has a dam height of 20 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.