Dwight
Key Takeaway
Dwight is classified as significant hazard in Massachusetts. It was completed in 1860 and is 166 years old. Its primary use is hydroelectric. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 24 ft (taller than 77.7% in MA) |
| Dam Length | 327 ft |
| Dam Type | Masonry |
| Max Storage | 200 acre-ft |
| Normal Storage | 200 acre-ft |
| Surface Area | 32 acres |
| Drainage Area | 718 sq mi |
| Max Discharge | 21,000 cfs |
| Year Completed | 1860 (166 years old) |
| NID ID | MA00721 |
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
Not Listed
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High Hazard 47 ftFrequently Asked Questions
What is the hazard classification of Dwight?
Dwight 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 Dwight?
Dwight is owned by information not available (Not Listed). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Dwight built?
Dwight was completed in 1860, making it 166 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 Dwight?
Dwight serves the following purposes: Hydroelectric, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Dwight?
Dwight has a dam height of 24 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 Dwight last inspected?
Dwight was last inspected on September 19, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.