Cheshire Reservoir Dam
Key Takeaway
Cheshire Reservoir Dam is classified as high hazard in Connecticut. It was completed in 1908 and is 118 years old. Its primary use is water supply. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 21 ft (taller than 76.6% in CT) |
| Dam Length | 168 ft |
| Dam Type | Earth |
| Max Storage | 58 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,086 cfs |
| Year Completed | 1908 (118 years old) |
| NID ID | CT00303 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
South Central CT RWA
Public Utility
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Significant Hazard 7 ftFrequently Asked Questions
What is the hazard classification of Cheshire Reservoir Dam?
Cheshire Reservoir Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Cheshire Reservoir Dam?
Cheshire Reservoir Dam is owned by South Central CT RWA (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Cheshire Reservoir Dam built?
Cheshire Reservoir Dam was completed in 1908, making it 118 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 Cheshire Reservoir Dam?
Cheshire Reservoir 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 Cheshire Reservoir Dam?
Cheshire Reservoir Dam has a dam height of 21 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 Cheshire Reservoir Dam last inspected?
Cheshire Reservoir Dam was last inspected on November 6, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.