Jones Dam
Key Takeaway
Jones Dam is classified as high hazard in New Hampshire. It was completed in 1924 and is 102 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 | 21 ft (taller than 74.5% in NH) |
| Dam Length | 210 ft |
| Dam Type | Concrete |
| Max Storage | 375 acre-ft |
| Normal Storage | 280 acre-ft |
| Surface Area | 80 acres |
| Drainage Area | 16 sq mi |
| Max Discharge | 2,844 cfs |
| Year Completed | 1924 (102 years old) |
| Year Modified | 1986 |
| NID ID | NH00345 |
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
NH FISH AND GAME DEPARTMENT
State Government
Nearby Dams
Downing Pond Dam
Strafford, NH
Low Hazard 15 ftClub Pond Dam
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Low Hazard 9 ftWildsong Farm Pond Dam 1
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Low Hazard 16 ftMerrymeeting Lake Dam
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High Hazard 22 ftWildsong Farm Pond Dike
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Low Hazard 18 ftMarchs Pond Dam
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High Hazard 8 ftAlton Power Dam
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High Hazard 16 ftUpper Recreation Pond Dam
Belknap, NH
Low Hazard 14 ftFrequently Asked Questions
What is the hazard classification of Jones Dam?
Jones 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 Jones Dam?
Jones 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 Jones Dam built?
Jones Dam was completed in 1924, making it 102 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 Jones Dam?
Jones 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 Jones Dam?
Jones Dam has a dam height of 21 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 Jones Dam last inspected?
Jones Dam was last inspected on August 10, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.