Reservoir Lake
Key Takeaway
Reservoir Lake is classified as low hazard in Montana. It was completed in 1920 and is 106 years old. Its primary use is recreation.
Physical Details
| Dam Height | 9 ft (taller than 2.9% in MT) |
| Dam Length | 315 ft |
| Dam Type | Earth |
| Max Storage | 355 acre-ft |
| Normal Storage | 44 acre-ft |
| Surface Area | 40 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 218 cfs |
| Year Completed | 1920 (106 years old) |
| NID ID | MT00897 |
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
USDA FS
Federal Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Reservoir Lake?
Reservoir Lake 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 Reservoir Lake?
Reservoir Lake is owned by USDA FS (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Reservoir Lake built?
Reservoir Lake was completed in 1920, making it 106 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 Reservoir Lake?
Reservoir Lake serves the following purposes: Recreation, Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Reservoir Lake?
Reservoir Lake has a dam height of 9 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.
When was Reservoir Lake last inspected?
Reservoir Lake was last inspected on September 29, 2015. Inspection dates indicate when a formal review occurred, not the results of that inspection.