Souhegan River Site 19 Dam
Key Takeaway
Souhegan River Site 19 Dam is classified as high hazard in New Hampshire. It was completed in 1962 and is 64 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 | 36 ft (taller than 92% in NH) |
| Dam Length | 1,250 ft |
| Dam Type | Earth |
| Max Storage | 2.1K acre-ft |
| Normal Storage | 85 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 11 sq mi |
| Max Discharge | 16,463 cfs |
| Year Completed | 1962 (64 years old) |
| Year Modified | 1980 |
| NID ID | NH00434 |
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
Pond At West Road Dam
Middlesex, MA
Low Hazard 20 ftSouhegan River Site 35 Dam
Hillsborough, NH
High Hazard 30 ftWaterloom Falls
Hillsborough, NH
Low Hazard 18 ftSouhegan Site 14 Dam
Hillsborough, NH
High Hazard 28 ftSouhegan River Site 13 Dam
Hillsborough, NH
Low Hazard 14 ftPratt Pond Dam
Hillsborough, NH
Low Hazard 7 ftMarble Pond Dam
Worcester, MA
Low Hazard 10 ftOtis Falls
Hillsborough, NH
Significant Hazard 27 ftFrequently Asked Questions
What is the hazard classification of Souhegan River Site 19 Dam?
Souhegan River Site 19 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 River Site 19 Dam?
Souhegan River Site 19 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 River Site 19 Dam built?
Souhegan River Site 19 Dam was completed in 1962, making it 64 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 River Site 19 Dam?
Souhegan River Site 19 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 River Site 19 Dam?
Souhegan River Site 19 Dam has a dam height of 36 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 River Site 19 Dam last inspected?
Souhegan River Site 19 Dam was last inspected on April 7, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.