Mott Watershed Dam
Key Takeaway
Mott Watershed Dam is classified as high hazard in North Dakota. It was completed in 1969 and is 57 years old. Its primary use is flood risk reduction. 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 | 39 ft (taller than 91.8% in ND) |
| Dam Length | 2,218 ft |
| Dam Type | Earth |
| Max Storage | 2.8K acre-ft |
| Normal Storage | 120 acre-ft |
| Surface Area | 35 acres |
| Drainage Area | 3 sq mi |
| Year Completed | 1969 (57 years old) |
| NID ID | ND00080 |
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
Hettinger County WRB
Local Government
Nearby Dams
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Low Hazard 11 ftFrequently Asked Questions
What is the hazard classification of Mott Watershed Dam?
Mott Watershed Dam 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 Mott Watershed Dam?
Mott Watershed Dam is owned by Hettinger County WRB (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mott Watershed Dam built?
Mott Watershed Dam was completed in 1969, making it 57 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 Mott Watershed Dam?
Mott Watershed Dam 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 Mott Watershed Dam?
Mott Watershed Dam has a dam height of 39 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 Mott Watershed Dam last inspected?
Mott Watershed Dam was last inspected on September 21, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.