Big Gravel Dam 1
Key Takeaway
Big Gravel Dam 1 is classified as low hazard in Montana. It was completed in 1952 and is 74 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 20 ft (taller than 44.5% in MT) |
| Dam Length | 100 ft |
| Dam Type | Earth |
| Max Storage | 206 acre-ft |
| Normal Storage | 106 acre-ft |
| Surface Area | 0 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1952 (74 years old) |
| NID ID | MT03310 |
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.I.A. (Rocky Boy Reservation)
Federal Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Big Gravel Dam 1?
Big Gravel Dam 1 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 Big Gravel Dam 1?
Big Gravel Dam 1 is owned by U.S. D.O.I. B.I.A. (Rocky Boy Reservation) (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Big Gravel Dam 1 built?
Big Gravel Dam 1 was completed in 1952, making it 74 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 Big Gravel Dam 1?
Big Gravel Dam 1 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 Big Gravel Dam 1?
Big Gravel Dam 1 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.