Long Tom Lake
Key Takeaway
Long Tom Lake is classified as low hazard in Minnesota. It was completed in 1967 and is 59 years old. Its primary use is other.
Physical Details
| Dam Height | 10 ft (taller than 30.9% in MN) |
| Dam Length | 20 ft |
| Dam Type | Earth |
| Max Storage | 4.3K acre-ft |
| Normal Storage | 2.9K acre-ft |
| Surface Area | 147 acres |
| Drainage Area | 118 sq mi |
| Max Discharge | 653 cfs |
| Year Completed | 1967 (59 years old) |
| NID ID | MN00170 |
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
Huizenge, Lena
Private
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Low Hazard 14 ftFrequently Asked Questions
What is the hazard classification of Long Tom Lake?
Long Tom 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 Long Tom Lake?
Long Tom Lake is owned by Huizenge, Lena (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Long Tom Lake built?
Long Tom Lake was completed in 1967, making it 59 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 Long Tom Lake?
Long Tom Lake serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Long Tom Lake?
Long Tom Lake has a dam height of 10 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 Long Tom Lake last inspected?
Long Tom Lake was last inspected on June 9, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.