Beaulieu
Key Takeaway
Beaulieu is classified as high hazard in South Dakota. It was completed in 1947 and is 79 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 | 41 ft (taller than 97.1% in SD) |
| Dam Length | 470 ft |
| Dam Type | Earth |
| Max Storage | 465 acre-ft |
| Normal Storage | 270 acre-ft |
| Surface Area | 29 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 3,000 cfs |
| Year Completed | 1947 (79 years old) |
| NID ID | SD00044 |
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
GF&P
State Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Beaulieu?
Beaulieu 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 Beaulieu?
Beaulieu is owned by GF&P (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Beaulieu built?
Beaulieu was completed in 1947, making it 79 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 Beaulieu?
Beaulieu 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 Beaulieu?
Beaulieu has a dam height of 41 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 Beaulieu last inspected?
Beaulieu was last inspected on October 25, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.