Flat Lake
Key Takeaway
Flat Lake is classified as low hazard in Minnesota. It was completed in 1941 and is 85 years old. Its primary use is fish and wildlife pond.
Physical Details
| Dam Height | 6 ft (taller than 1.9% in MN) |
| Dam Length | 330 ft |
| Dam Type | Earth |
| Max Storage | 12.1K acre-ft |
| Normal Storage | 5.0K acre-ft |
| Surface Area | 1,754 acres |
| Drainage Area | 34 sq mi |
| Max Discharge | 1,299 cfs |
| Year Completed | 1941 (85 years old) |
| NID ID | MN00616 |
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
USFWS
Federal Government
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Low Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Flat Lake?
Flat Lake 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 Flat Lake?
Flat Lake is owned by USFWS (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Flat Lake built?
Flat Lake was completed in 1941, making it 85 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 Flat Lake?
Flat Lake 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 Flat Lake?
Flat Lake has a dam height of 6 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.