Lucas Lake
Key Takeaway
Lucas Lake is classified as high hazard in Wisconsin. It was completed in 1923 and is 103 years old. Its primary use is recreation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 8 ft (taller than 5.5% in WI) |
| Dam Length | 150 ft |
| Dam Type | Gravity |
| Max Storage | 630 acre-ft |
| Normal Storage | 400 acre-ft |
| Surface Area | 78 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 217 cfs |
| Year Completed | 1923 (103 years old) |
| NID ID | WI00328 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Girl Scouts of Wisconsin Southeast
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Lucas Lake?
Lucas Lake is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Lucas Lake?
Lucas Lake is owned by Girl Scouts of Wisconsin Southeast (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lucas Lake built?
Lucas Lake was completed in 1923, making it 103 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 Lucas Lake?
Lucas Lake serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lucas Lake?
Lucas Lake has a dam height of 8 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 Lucas Lake last inspected?
Lucas Lake was last inspected on July 3, 2013. Inspection dates indicate when a formal review occurred, not the results of that inspection.