Jones #1
Key Takeaway
Jones #1 is classified as low hazard in Montana. It was completed in 1949 and is 77 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 22 ft (taller than 63.5% in MT) |
| Dam Length | 430 ft |
| Dam Type | Earth |
| Max Storage | 57 acre-ft |
| Normal Storage | 34 acre-ft |
| Surface Area | 5 acres |
| Year Completed | 1949 (77 years old) |
| NID ID | MT01641 |
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
LARSON LAND AND LIVESTOCK
Private
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Low Hazard 21 ftFrequently Asked Questions
What is the hazard classification of Jones #1?
Jones #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 Jones #1?
Jones #1 is owned by LARSON LAND AND LIVESTOCK (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Jones #1 built?
Jones #1 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 Jones #1?
Jones #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 Jones #1?
Jones #1 has a dam height of 22 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 Jones #1 last inspected?
Jones #1 was last inspected on April 17, 2007. Inspection dates indicate when a formal review occurred, not the results of that inspection.