New London
Key Takeaway
New London is classified as high hazard in Minnesota. It was completed in 1864 and is 162 years old. Its primary use is recreation. 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 | 19 ft (taller than 59.4% in MN) |
| Dam Length | 13 ft |
| Dam Type | Earth |
| Max Storage | 13.4K acre-ft |
| Normal Storage | 7.0K acre-ft |
| Drainage Area | 102 sq mi |
| Max Discharge | 380 cfs |
| Year Completed | 1864 (162 years old) |
| Year Modified | 2010 |
| NID ID | MN00062 |
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
MNDNR-Fisheries
State Government
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Low Hazard 7 ftFrequently Asked Questions
What is the hazard classification of New London?
New London 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 New London?
New London is owned by MNDNR-Fisheries (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was New London built?
New London was completed in 1864, making it 162 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 New London?
New London serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is New London?
New London has a dam height of 19 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 New London last inspected?
New London was last inspected on April 18, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.