Lake Yankton
Key Takeaway
Lake Yankton is classified as low hazard in Minnesota. It was completed in 1942 and is 84 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 8 ft (taller than 16.2% in MN) |
| Dam Length | 17 ft |
| Dam Type | Gravity |
| Max Storage | 380 acre-ft |
| Normal Storage | 380 acre-ft |
| Surface Area | 380 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 389 cfs |
| Year Completed | 1942 (84 years old) |
| NID ID | MN00230 |
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
City of Balaton
Local Government
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Low Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Lake Yankton?
Lake Yankton 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 Lake Yankton?
Lake Yankton is owned by City of Balaton (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Yankton built?
Lake Yankton was completed in 1942, making it 84 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 Lake Yankton?
Lake Yankton serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lake Yankton?
Lake Yankton 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 Lake Yankton last inspected?
Lake Yankton was last inspected on August 24, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.