Frog
Key Takeaway
Frog is classified as low hazard in Montana. It was completed in 1960 and is 66 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 46 ft (taller than 96.4% in MT) |
| Dam Length | 300 ft |
| Dam Type | Earth |
| Max Storage | 539 acre-ft |
| Normal Storage | 281 acre-ft |
| Year Completed | 1960 (66 years old) |
| NID ID | MT02975 |
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
NORTH HARLEM COLONY
Private
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Low Hazard 15 ftFrequently Asked Questions
What is the hazard classification of Frog?
Frog 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 Frog?
Frog is owned by NORTH HARLEM COLONY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Frog built?
Frog was completed in 1960, making it 66 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 Frog?
Frog 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 Frog?
Frog has a dam height of 46 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.