Souhegan Site 14 Dam
Key Takeaway
Souhegan Site 14 Dam is classified as high hazard in New Hampshire. It was completed in 1836 and is 190 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 | 28 ft (taller than 84.8% in NH) |
| Dam Length | 1,510 ft |
| Dam Type | Earth |
| Max Storage | 885 acre-ft |
| Normal Storage | 23 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 4,700 cfs |
| Year Completed | 1836 (190 years old) |
| Year Modified | 1964 |
| NID ID | NH00433 |
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
Souhegan River Site 13 Dam
Hillsborough, NH
Low Hazard 14 ftWaterloom Falls
Hillsborough, NH
Low Hazard 18 ftSouhegan River Site 35 Dam
Hillsborough, NH
High Hazard 30 ftSouhegan River Site 19 Dam
Hillsborough, NH
High Hazard 36 ftSouhegan River Site 12a South Dam
Hillsborough, NH
High Hazard 38 ftSouhegan River Site 12a North Dike
Hillsborough, NH
High Hazard 39 ftOtis Falls
Hillsborough, NH
Significant Hazard 27 ftPratt Pond Dam
Hillsborough, NH
Low Hazard 7 ftFrequently Asked Questions
What is the hazard classification of Souhegan Site 14 Dam?
Souhegan Site 14 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 Souhegan Site 14 Dam?
Souhegan Site 14 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 Souhegan Site 14 Dam built?
Souhegan Site 14 Dam was completed in 1836, making it 190 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 Souhegan Site 14 Dam?
Souhegan Site 14 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 Souhegan Site 14 Dam?
Souhegan Site 14 Dam has a dam height of 28 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 Souhegan Site 14 Dam last inspected?
Souhegan Site 14 Dam was last inspected on April 7, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.