Zelzo
Key Takeaway
Zelzo is classified as low hazard in Montana. It was completed in 1920 and is 106 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 15 ft (taller than 18.8% in MT) |
| Dam Length | 300 ft |
| Dam Type | Earth |
| Max Storage | 184 acre-ft |
| Normal Storage | 73 acre-ft |
| Year Completed | 1920 (106 years old) |
| NID ID | MT02763 |
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
ZELZO HEDGES
Private
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Significant Hazard 27 ftFrequently Asked Questions
What is the hazard classification of Zelzo?
Zelzo 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 Zelzo?
Zelzo is owned by ZELZO HEDGES (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Zelzo built?
Zelzo was completed in 1920, making it 106 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 Zelzo?
Zelzo 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 Zelzo?
Zelzo has a dam height of 15 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.