Armington Lake Dam
Key Takeaway
Armington Lake Dam is classified as significant hazard in New Hampshire. It was completed in 1900 and is 126 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 9 ft (taller than 10.9% in NH) |
| Dam Length | 220 ft |
| Dam Type | Concrete |
| Max Storage | 2.7K acre-ft |
| Normal Storage | 549 acre-ft |
| Surface Area | 159 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 1,900 cfs |
| Year Completed | 1900 (126 years old) |
| Year Modified | 2019 |
| NID ID | NH00460 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
NH FISH AND GAME DEPARTMENT
State Government
Nearby Dams
Lake Tarleton Dam
Grafton, NH
Low Hazard 8 ftOliverian Dam
Grafton, NH
High Hazard 52 ftWeeks Crossing Pond Dam
Grafton, NH
Significant Hazard 14 ftBaker River Site 6 Dam
Grafton, NH
Significant Hazard 14 ftBaker River Site 2 Dam
Grafton, NH
High Hazard 68 ftBaker River Site 5 Dike
Grafton, NH
Low Hazard 20 ftBaker River Site 5 Dam
Grafton, NH
High Hazard 53 ftBaker River Site 6a Dam
Grafton, NH
High Hazard 68 ftFrequently Asked Questions
What is the hazard classification of Armington Lake Dam?
Armington Lake Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Armington Lake Dam?
Armington Lake Dam is owned by NH FISH AND GAME DEPARTMENT (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Armington Lake Dam built?
Armington Lake Dam was completed in 1900, making it 126 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 Armington Lake Dam?
Armington 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 Armington Lake Dam?
Armington Lake 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 Armington Lake Dam last inspected?
Armington Lake Dam was last inspected on November 5, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.