Terryville Reservoir #3 Dam
Key Takeaway
Terryville Reservoir #3 Dam is classified as significant hazard in Connecticut. It was completed in 1920 and is 106 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 20 ft (taller than 72.5% in CT) |
| Dam Length | 450 ft |
| Dam Type | Earth |
| Max Storage | 51 acre-ft |
| Normal Storage | 51 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 160 cfs |
| Year Completed | 1920 (106 years old) |
| NID ID | CT00292 |
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
Town of Plymouth
Local Government
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What is the hazard classification of Terryville Reservoir #3 Dam?
Terryville Reservoir #3 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 Terryville Reservoir #3 Dam?
Terryville Reservoir #3 Dam is owned by Town of Plymouth (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Terryville Reservoir #3 Dam built?
Terryville Reservoir #3 Dam was completed in 1920, making it 106 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 Terryville Reservoir #3 Dam?
Terryville Reservoir #3 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 Terryville Reservoir #3 Dam?
Terryville Reservoir #3 Dam has a dam height of 20 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 Terryville Reservoir #3 Dam last inspected?
Terryville Reservoir #3 Dam was last inspected on September 4, 2013. Inspection dates indicate when a formal review occurred, not the results of that inspection.