Crystal Lake Dam
Key Takeaway
Crystal Lake 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 | 8 ft (taller than 6.7% in MA) |
| Dam Length | 230 ft |
| Dam Type | Masonry |
| Max Storage | 965 acre-ft |
| Normal Storage | 670 acre-ft |
| Surface Area | 160 acres |
| Drainage Area | 2 sq mi |
| Year Completed | 1930 (96 years old) |
| NID ID | MA01140 |
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, OFFICE OF THE MAYOR
Local Government
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Low Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Crystal Lake Dam?
Crystal Lake 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 Crystal Lake Dam?
Crystal Lake Dam is owned by CITY OF HAVERHILL, OFFICE OF THE MAYOR (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Crystal Lake Dam built?
Crystal Lake 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 Crystal Lake Dam?
Crystal Lake 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 Crystal Lake Dam?
Crystal Lake Dam has a dam height of 8 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 Crystal Lake Dam last inspected?
Crystal Lake Dam was last inspected on November 21, 2016. Inspection dates indicate when a formal review occurred, not the results of that inspection.