Twodot
Key Takeaway
Twodot is classified as low hazard in Montana. It was completed in 1953 and is 73 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 31 ft (taller than 90.2% in MT) |
| Dam Length | 750 ft |
| Dam Type | Earth |
| Max Storage | 650 acre-ft |
| Normal Storage | 555 acre-ft |
| Surface Area | 42 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 1,000 cfs |
| Year Completed | 1953 (73 years old) |
| NID ID | MT01486 |
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
HORSE BUTTE RANCH
Private
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Low Hazard 20 ftFrequently Asked Questions
What is the hazard classification of Twodot?
Twodot 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 Twodot?
Twodot is owned by HORSE BUTTE RANCH (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Twodot built?
Twodot was completed in 1953, making it 73 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 Twodot?
Twodot serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Twodot?
Twodot has a dam height of 31 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 Twodot last inspected?
Twodot was last inspected on December 18, 1980. Inspection dates indicate when a formal review occurred, not the results of that inspection.