Marindahl
Key Takeaway
Marindahl is classified as high hazard in South Dakota. It was completed in 1953 and is 73 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 | 58 ft (taller than 99% in SD) |
| Dam Length | 640 ft |
| Dam Type | Earth |
| Max Storage | 3.1K acre-ft |
| Normal Storage | 1.6K acre-ft |
| Surface Area | 105 acres |
| Drainage Area | 72 sq mi |
| Max Discharge | 12,360 cfs |
| Year Completed | 1953 (73 years old) |
| Year Modified | 2000 |
| NID ID | SD00045 |
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 Marindahl?
Marindahl 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 Marindahl?
Marindahl is owned by GF&P (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Marindahl built?
Marindahl was completed in 1953, making it 73 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 Marindahl?
Marindahl 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 Marindahl?
Marindahl has a dam height of 58 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 Marindahl last inspected?
Marindahl was last inspected on October 4, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.