Okauchee Lake
Key Takeaway
Okauchee Lake is classified as low hazard in Wisconsin. It was completed in 1961 and is 65 years old. Its primary use is recreation.
Physical Details
| Dam Height | 18 ft (taller than 55.3% in WI) |
| Dam Length | 450 ft |
| Dam Type | Gravity |
| Max Storage | 15.0K acre-ft |
| Normal Storage | 11.0K acre-ft |
| Surface Area | 1,187 acres |
| Drainage Area | 81 sq mi |
| Max Discharge | 1,589 cfs |
| Year Completed | 1961 (65 years old) |
| NID ID | WI00222 |
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
TOWN OF OCONOMOWOC
Local Government
Nearby Dams
Oconomowoc Lake
Waukesha, WI
Low Hazard 7 ftPeacock
Waukesha, WI
Significant Hazard 11 ftLower Lake Nemahbin
Waukesha, WI
Low Hazard 8 ftDelafield Fish Hatchery
Waukesha, WI
Low Hazard 10 ftMonterey
Waukesha, WI
Low Hazard 16 ftWaterville
Waukesha, WI
Low Hazard 16 ftAlderly Mill
Dodge, WI
Low Hazard 9 ftBischel
Waukesha, WI
Low Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Okauchee Lake?
Okauchee Lake 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 Okauchee Lake?
Okauchee Lake is owned by TOWN OF OCONOMOWOC (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Okauchee Lake built?
Okauchee Lake was completed in 1961, making it 65 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 Okauchee Lake?
Okauchee 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 Okauchee Lake?
Okauchee Lake has a dam height of 18 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 Okauchee Lake last inspected?
Okauchee Lake was last inspected on May 25, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.