Souhegan River Site 15 Dam
Key Takeaway
Souhegan River Site 15 Dam is classified as significant hazard in New Hampshire. It was completed in 1963 and is 63 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 13 ft (taller than 36.5% in NH) |
| Dam Length | 305 ft |
| Dam Type | Earth |
| Max Storage | 708 acre-ft |
| Normal Storage | 74 acre-ft |
| Surface Area | 69 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1963 (63 years old) |
| NID ID | NH00263 |
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 DES WATER DIVISION
State Government
Nearby Dams
Souhegan River Site 12a South Dam
Hillsborough, NH
High Hazard 38 ftSouhegan River Site 25b Dam
Hillsborough, NH
High Hazard 74 ftOtis Falls
Hillsborough, NH
Significant Hazard 27 ftSouhegan River Site 12a North Dike
Hillsborough, NH
High Hazard 39 ftPeters Farm Pond Dam
Hillsborough, NH
Significant Hazard 9 ftPratt Pond Dam
Hillsborough, NH
Low Hazard 9 ftPratt Pond Dike
Hillsborough, NH
Low Hazard 9 ftPratt Pond Spillway Section
Hillsborough, NH
Low Hazard 6 ftFrequently Asked Questions
What is the hazard classification of Souhegan River Site 15 Dam?
Souhegan River Site 15 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 Souhegan River Site 15 Dam?
Souhegan River Site 15 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 15 Dam built?
Souhegan River Site 15 Dam was completed in 1963, making it 63 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 15 Dam?
Souhegan River Site 15 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 15 Dam?
Souhegan River Site 15 Dam has a dam height of 13 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 15 Dam last inspected?
Souhegan River Site 15 Dam was last inspected on November 16, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.