Harris Brook Reservoir Dam
Key Takeaway
Harris Brook Reservoir Dam is classified as significant hazard in New Hampshire. It was completed in 1903 and is 123 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 22 ft (taller than 76.5% in NH) |
| Dam Length | 755 ft |
| Dam Type | Earth |
| Max Storage | 208 acre-ft |
| Normal Storage | 132 acre-ft |
| Surface Area | 21 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 919 cfs |
| Year Completed | 1903 (123 years old) |
| NID ID | NH00354 |
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
ENFIELD WATER DEPARTMENT
Local Government
Nearby Dams
Baltic Mills Dam
Grafton, NH
Low Hazard 21 ftMascoma Lake Dam
Grafton, NH
High Hazard 18 ftMontcalm Golf Club Dam
Grafton, NH
Low Hazard 27 ftGoose Pond Dam
Grafton, NH
High Hazard 31 ftFerson Pond Dam
Grafton, NH
Low Hazard 7 ftHanover Center Reservoir Dam
Grafton, NH
High Hazard 30 ftSmith Pond Dam
Grafton, NH
High Hazard 12 ftCrystal Lake Dam
Grafton, NH
Significant Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Harris Brook Reservoir Dam?
Harris Brook Reservoir 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 Harris Brook Reservoir Dam?
Harris Brook Reservoir Dam is owned by ENFIELD WATER DEPARTMENT (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Harris Brook Reservoir Dam built?
Harris Brook Reservoir Dam was completed in 1903, making it 123 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 Harris Brook Reservoir Dam?
Harris Brook Reservoir Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Harris Brook Reservoir Dam?
Harris Brook Reservoir Dam has a dam height of 22 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 Harris Brook Reservoir Dam last inspected?
Harris Brook Reservoir Dam was last inspected on November 3, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.