Millville Lake Dam
Key Takeaway
Millville Lake Dam is classified as high hazard in New Hampshire. It was completed in 1917 and is 109 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 | 20 ft (taller than 70.9% in NH) |
| Dam Length | 484 ft |
| Dam Type | Earth |
| Max Storage | 650 acre-ft |
| Normal Storage | 300 acre-ft |
| Surface Area | 54 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 1,880 cfs |
| Year Completed | 1917 (109 years old) |
| NID ID | NH00030 |
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
TOWN OF SALEM
Local Government
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Low Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Millville Lake Dam?
Millville Lake 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 Millville Lake Dam?
Millville Lake Dam is owned by TOWN OF SALEM (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Millville Lake Dam built?
Millville Lake Dam was completed in 1917, making it 109 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 Millville Lake Dam?
Millville Lake Dam 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 Millville Lake Dam?
Millville Lake Dam has a dam height of 20 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 Millville Lake Dam last inspected?
Millville Lake Dam was last inspected on October 24, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.