Tunnel Dam Hydro Station
Key Takeaway
Tunnel Dam Hydro Station is classified as significant hazard in Connecticut. It was completed in 1906 and is 120 years old. Its primary use is hydroelectric. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 32 ft (taller than 89.8% in CT) |
| Dam Length | 780 ft |
| Dam Type | Concrete |
| Max Storage | 1.7K acre-ft |
| Normal Storage | 1.7K acre-ft |
| Surface Area | 100 acres |
| Drainage Area | 744 sq mi |
| Max Discharge | 33,940 cfs |
| Year Completed | 1906 (120 years old) |
| NID ID | CT00637 |
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
FirstLight Power Resources
Public Utility
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High Hazard 16 ftFrequently Asked Questions
What is the hazard classification of Tunnel Dam Hydro Station?
Tunnel Dam Hydro Station 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 Tunnel Dam Hydro Station?
Tunnel Dam Hydro Station is owned by FirstLight Power Resources (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Tunnel Dam Hydro Station built?
Tunnel Dam Hydro Station was completed in 1906, making it 120 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 Tunnel Dam Hydro Station?
Tunnel Dam Hydro Station serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Tunnel Dam Hydro Station?
Tunnel Dam Hydro Station has a dam height of 32 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 Tunnel Dam Hydro Station last inspected?
Tunnel Dam Hydro Station was last inspected on July 27, 2016. Inspection dates indicate when a formal review occurred, not the results of that inspection.