Baker River Site 11a Dam
Key Takeaway
Baker River Site 11a Dam is classified as high hazard in New Hampshire. It was completed in 1971 and is 55 years old. Its primary use is flood risk reduction. 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 | 24 ft (taller than 79% in NH) |
| Dam Length | 640 ft |
| Dam Type | Earth |
| Max Storage | 355 acre-ft |
| Normal Storage | 9 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 2,029 cfs |
| Year Completed | 1971 (55 years old) |
| NID ID | NH00247 |
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 DES WATER DIVISION
State Government
Nearby Dams
Baker River Site 11 Dam
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Low Hazard 20 ftBaker River Site 8 Dam
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High Hazard 63 ftBaker River Site 6 Dam
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Significant Hazard 14 ftStinson Lake Dam
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Low Hazard 8 ftBaker River Site 2 Dam
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High Hazard 68 ftFrequently Asked Questions
What is the hazard classification of Baker River Site 11a Dam?
Baker River Site 11a 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 Baker River Site 11a Dam?
Baker River Site 11a Dam is owned by NH DES WATER DIVISION (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Baker River Site 11a Dam built?
Baker River Site 11a Dam was completed in 1971, making it 55 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 Baker River Site 11a Dam?
Baker River Site 11a Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Baker River Site 11a Dam?
Baker River Site 11a Dam has a dam height of 24 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 Baker River Site 11a Dam last inspected?
Baker River Site 11a Dam was last inspected on May 5, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.