Trego
Key Takeaway
Trego is classified as significant hazard in Wisconsin. It was completed in 1927 and is 99 years old. Its primary use is hydroelectric. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 39 ft (taller than 91.9% in WI) |
| Dam Length | 625 ft |
| Dam Type | Gravity |
| Max Storage | 4.7K acre-ft |
| Normal Storage | 4.7K acre-ft |
| Surface Area | 470 acres |
| Drainage Area | 488 sq mi |
| Max Discharge | 9,240 cfs |
| Year Completed | 1927 (99 years old) |
| NID ID | WI00812 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Northern States Power Co
Public Utility
Nearby Dams
Conroy Ford
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Low Hazard 12 ftLower Lost Lake
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Low Hazard 9 ftTaylor Lake
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Low Hazard 8 ftFrequently Asked Questions
What is the hazard classification of Trego?
Trego is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Trego?
Trego is owned by Northern States Power Co (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Trego built?
Trego was completed in 1927, making it 99 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 Trego?
Trego serves the following purposes: Hydroelectric, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Trego?
Trego has a dam height of 39 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 Trego last inspected?
Trego was last inspected on September 21, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.