Grethe
Key Takeaway
Grethe is classified as low hazard in Wisconsin. It was completed in 1969 and is 57 years old. Its primary use is recreation.
Physical Details
| Dam Height | 14 ft (taller than 40.1% in WI) |
| Dam Length | 238 ft |
| Dam Type | Earth |
| Max Storage | 53 acre-ft |
| Surface Area | 50 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 196 cfs |
| Year Completed | 1969 (57 years old) |
| NID ID | WI00451 |
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
Series F of LG5, LLC
Private
Nearby Dams
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Low Hazard 12 ftKingsley Lake Dam
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Low Hazard 22 ftKazimer Lake Dam
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Significant Hazard 15 ftFrequently Asked Questions
What is the hazard classification of Grethe?
Grethe 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 Grethe?
Grethe is owned by Series F of LG5, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Grethe built?
Grethe was completed in 1969, making it 57 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 Grethe?
Grethe serves the following purposes: Recreation, Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Grethe?
Grethe has a dam height of 14 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 Grethe last inspected?
Grethe was last inspected on October 29, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.