Lake Mann Dam
Key Takeaway
Lake Mann Dam is classified as low hazard in North Dakota. It was completed in 1965 and is 61 years old. Its primary use is fish and wildlife pond.
Physical Details
| Dam Height | 9 ft (taller than 12.8% in ND) |
| Dam Length | 784 ft |
| Dam Type | Earth |
| Max Storage | 658 acre-ft |
| Normal Storage | 475 acre-ft |
| Surface Area | 58 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 35 cfs |
| Year Completed | 1965 (61 years old) |
| NID ID | ND00900 |
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
US FISH AND WILDLIFE SERVICE
Federal Government
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Low Hazard 8 ftFrequently Asked Questions
What is the hazard classification of Lake Mann Dam?
Lake Mann Dam 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 Mann Dam?
Lake Mann Dam is owned by US FISH AND WILDLIFE SERVICE (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Mann Dam built?
Lake Mann Dam was completed in 1965, making it 61 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 Mann Dam?
Lake Mann Dam serves the following purposes: Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lake Mann Dam?
Lake Mann Dam has a dam height of 9 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 Mann Dam last inspected?
Lake Mann Dam was last inspected on October 6, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.