Mitchell
Key Takeaway
Mitchell is classified as high hazard in South Dakota. It was completed in 1928 and is 98 years old. Its primary use is water supply. 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 | 55 ft (taller than 98.9% in SD) |
| Dam Length | 1,320 ft |
| Dam Type | Earth |
| Max Storage | 19.6K acre-ft |
| Normal Storage | 9.0K acre-ft |
| Surface Area | 767 acres |
| Drainage Area | 496 sq mi |
| Max Discharge | 53,100 cfs |
| Year Completed | 1928 (98 years old) |
| Year Modified | 1999 |
| NID ID | SD00685 |
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
CITY OF MITCHELL
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Mitchell?
Mitchell 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 Mitchell?
Mitchell is owned by CITY OF MITCHELL (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mitchell built?
Mitchell was completed in 1928, making it 98 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 Mitchell?
Mitchell serves the following purposes: Water Supply, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Mitchell?
Mitchell has a dam height of 55 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 Mitchell last inspected?
Mitchell was last inspected on November 2, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.