Johnsons Pond Dam
Key Takeaway
Johnsons Pond Dam is classified as significant hazard in Massachusetts. It was completed in 1930 and is 96 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 9 ft (taller than 12.4% in MA) |
| Dam Length | 180 ft |
| Dam Type | Earth |
| Max Storage | 1.9K acre-ft |
| Normal Storage | 810 acre-ft |
| Surface Area | 186 acres |
| Drainage Area | 5 sq mi |
| Year Completed | 1930 (96 years old) |
| NID ID | MA01204 |
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
CITY OF HAVERHILL, ENGINEERING DEPARTMENT
Local Government
Nearby Dams
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Significant Hazard 16 ftStiles Pond Dam
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Significant Hazard 9 ftKenoza Lake Outlet Dam
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Significant Hazard 10 ftBaldpate Pond Dam
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Low Hazard 10 ftWinnekenni Basin Dam
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Low Hazard 10 ftLittle River Dam
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Significant Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Johnsons Pond Dam?
Johnsons Pond 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 Johnsons Pond Dam?
Johnsons Pond Dam is owned by CITY OF HAVERHILL, ENGINEERING DEPARTMENT (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Johnsons Pond Dam built?
Johnsons Pond Dam was completed in 1930, making it 96 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 Johnsons Pond Dam?
Johnsons Pond 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 Johnsons Pond Dam?
Johnsons Pond Dam has a dam height of 9 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 Johnsons Pond Dam last inspected?
Johnsons Pond Dam was last inspected on December 5, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.