Olson (Prairie)
Key Takeaway
Olson (Prairie) is classified as low hazard in Montana. It was completed in 1963 and is 63 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 30 ft (taller than 82.7% in MT) |
| Dam Length | 554 ft |
| Dam Type | Earth |
| Max Storage | 90 acre-ft |
| Normal Storage | 80 acre-ft |
| Drainage Area | 4 sq mi |
| Max Discharge | 900 cfs |
| Year Completed | 1963 (63 years old) |
| NID ID | MT00342 |
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
O OLSON
Private
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Low Hazard 18 ftFrequently Asked Questions
What is the hazard classification of Olson (Prairie)?
Olson (Prairie) 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 Olson (Prairie)?
Olson (Prairie) is owned by O OLSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Olson (Prairie) built?
Olson (Prairie) was completed in 1963, making it 63 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 Olson (Prairie)?
Olson (Prairie) 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 Olson (Prairie)?
Olson (Prairie) has a dam height of 30 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.