Goffstown Lower Reservoir Dam
Key Takeaway
Goffstown Lower Reservoir Dam is classified as high hazard in New Hampshire. It was completed in 1906 and is 120 years old. Its primary use is water supply. 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 | 30 ft (taller than 86.7% in NH) |
| Dam Length | 260 ft |
| Dam Type | Earth |
| Max Storage | 25 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,430 cfs |
| Year Completed | 1906 (120 years old) |
| Year Modified | 1992 |
| NID ID | NH00491 |
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
GOFFSTOWN VILLAGE PRECINCT
Local Government
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What is the hazard classification of Goffstown Lower Reservoir Dam?
Goffstown Lower Reservoir 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 Goffstown Lower Reservoir Dam?
Goffstown Lower Reservoir Dam is owned by GOFFSTOWN VILLAGE PRECINCT (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Goffstown Lower Reservoir Dam built?
Goffstown Lower Reservoir Dam was completed in 1906, making it 120 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 Goffstown Lower Reservoir Dam?
Goffstown Lower Reservoir Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Goffstown Lower Reservoir Dam?
Goffstown Lower Reservoir Dam has a dam height of 30 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 Goffstown Lower Reservoir Dam last inspected?
Goffstown Lower Reservoir Dam was last inspected on May 17, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.