Hillsborough Sewage Lagoon Dam
Key Takeaway
Hillsborough Sewage Lagoon Dam is classified as significant hazard in New Hampshire. It was completed in 1984 and is 42 years old. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 12 ft (taller than 28.2% in NH) |
| Dam Length | 2,000 ft |
| Dam Type | Earth |
| Max Storage | 11 acre-ft |
| Normal Storage | 5 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1984 (42 years old) |
| NID ID | NH00718 |
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
TOWN OF HILLSBOROUGH
Local Government
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What is the hazard classification of Hillsborough Sewage Lagoon Dam?
Hillsborough Sewage Lagoon 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 Hillsborough Sewage Lagoon Dam?
Hillsborough Sewage Lagoon Dam is owned by TOWN OF HILLSBOROUGH (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hillsborough Sewage Lagoon Dam built?
Hillsborough Sewage Lagoon Dam was completed in 1984, making it 42 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 Hillsborough Sewage Lagoon Dam?
Hillsborough Sewage Lagoon Dam serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Hillsborough Sewage Lagoon Dam?
Hillsborough Sewage Lagoon Dam has a dam height of 12 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 Hillsborough Sewage Lagoon Dam last inspected?
Hillsborough Sewage Lagoon Dam was last inspected on May 4, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.