Nielsen
Key Takeaway
Nielsen is classified as low hazard in Montana. It was completed in 1973 and is 53 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 31 ft (taller than 90.2% in MT) |
| Dam Length | 666 ft |
| Dam Type | Earth |
| Max Storage | 80 acre-ft |
| Normal Storage | 65 acre-ft |
| Max Discharge | 100 cfs |
| Year Completed | 1973 (53 years old) |
| NID ID | MT00074 |
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
LARSEN RANCH
Private
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Low Hazard 17 ftFrequently Asked Questions
What is the hazard classification of Nielsen?
Nielsen 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 Nielsen?
Nielsen is owned by LARSEN RANCH (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Nielsen built?
Nielsen was completed in 1973, making it 53 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 Nielsen?
Nielsen 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 Nielsen?
Nielsen 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.