Killingworth Reservoir Dam
Key Takeaway
Killingworth Reservoir Dam is classified as high hazard in Connecticut. It was completed in 1895 and is 131 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 | 41 ft (taller than 94.2% in CT) |
| Dam Length | 750 ft |
| Dam Type | Earth |
| Max Storage | 1.2K acre-ft |
| Normal Storage | 1.1K acre-ft |
| Surface Area | 109 acres |
| Drainage Area | 2 sq mi |
| Year Completed | 1895 (131 years old) |
| Year Modified | 2006 |
| NID ID | CT00401 |
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
Connecticut Water Company
Public Utility
Nearby Dams
Lower Murray Pond Dam
Middlesex, CT
Significant Hazard 12 ftKelseytown Reservoir Dam
Middlesex, CT
Significant Hazard 12 ftTower Hill Lake Dam
Middlesex, CT
Low Hazard 20 ftUpper Murray Pond Dam
Middlesex, CT
Significant Hazard 7 ftCockaponset Pond Dam
Middlesex, CT
Significant Hazard 10 ftFoster Pond Dam
Middlesex, CT
Significant Hazard 17 ftPattaconk Reservoir Dam
Middlesex, CT
High Hazard 23 ftCedar Lake Dam
Middlesex, CT
Significant Hazard 4 ftFrequently Asked Questions
What is the hazard classification of Killingworth Reservoir Dam?
Killingworth 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 Killingworth Reservoir Dam?
Killingworth Reservoir Dam is owned by Connecticut Water Company (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Killingworth Reservoir Dam built?
Killingworth Reservoir Dam was completed in 1895, making it 131 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 Killingworth Reservoir Dam?
Killingworth 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 Killingworth Reservoir Dam?
Killingworth Reservoir Dam has a dam height of 41 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 Killingworth Reservoir Dam last inspected?
Killingworth Reservoir Dam was last inspected on October 4, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.