Butterworth Lake Dam
Key Takeaway
Butterworth Lake Dam is classified as significant hazard in Connecticut. It was completed in 1961 and is 65 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 15 ft (taller than 58.6% in CT) |
| Dam Length | 215 ft |
| Dam Type | Earth |
| Max Storage | 113 acre-ft |
| Normal Storage | 33 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,635 cfs |
| Year Completed | 1961 (65 years old) |
| NID ID | CT00122 |
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
Connecticut DEEP
State Government
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Significant Hazard 7 ftFrequently Asked Questions
What is the hazard classification of Butterworth Lake Dam?
Butterworth 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 Butterworth Lake Dam?
Butterworth Lake Dam is owned by Connecticut DEEP (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Butterworth Lake Dam built?
Butterworth Lake Dam was completed in 1961, making it 65 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 Butterworth Lake Dam?
Butterworth Lake 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 Butterworth Lake Dam?
Butterworth Lake Dam has a dam height of 15 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 Butterworth Lake Dam last inspected?
Butterworth Lake Dam was last inspected on April 24, 2015. Inspection dates indicate when a formal review occurred, not the results of that inspection.