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Quillinan Reservoir Dam, located in Ansonia, Connecticut, is a concrete structure completed in 1880 with a primary purpose of recreation.
The dam stands at a height of 19 feet and stretches 575 feet in length, creating a surface area of 12 acres and serving a drainage area of 2.67 square miles. Despite its historical significance, the dam poses a high hazard potential and has been assessed to be in fair condition as of October 2020.
Managed by the State of Connecticut Department of Energy and Environmental Protection (DEEP), the Quillinan Reservoir Dam is regulated, permitted, inspected, and enforced by state authorities. The dam features an uncontrolled spillway with a width of 34 feet, posing moderate risks that are closely monitored with a regular inspection frequency of every two years. Although the dam does not have associated locks or outlet gates, its emergency action plan (EAP) was last revised in May 2016, ensuring preparedness for potential hazards.
For water resource and climate enthusiasts, the Quillinan Reservoir Dam represents a historical landmark in Connecticut's water management infrastructure, offering recreational opportunities while facing operational challenges due to its high hazard potential. As efforts continue to monitor and manage the dam's risks, ongoing inspections and risk assessments play a crucial role in maintaining the safety and integrity of this significant structure in the Beaver Brook watershed.
Housatonic River At Stevenson
|
2230cfs |
Naugatuck River At Beacon Falls
|
277cfs |
Mill R Nr Hamden
|
24cfs |
Pootatuck R At Sandy Hook
|
26cfs |
Pomperaug River At Southbury
|
72cfs |
Quinnipiac River At Wallingford
|
120cfs |
Year Completed |
1880 |
Dam Length |
575 |
Dam Height |
19 |
River Or Stream |
BEAVER BROOK |
Primary Dam Type |
Concrete |
Surface Area |
12 |
Drainage Area |
2.67 |
Hazard Potential |
High |
Nid Height |
19 |
| Location | Reservations | Toilets |
|---|---|---|
Kettletown State Park
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Youth Camp III
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Youth Camp II
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Youth Camp I
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Black Rock State Park
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SR3
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Begins Downstream Of The Borough Of Bantam, At Stoddard Road Bridge To The Confluence With The Shepaug River
Pond Downstream Of Shepaug Reservoir Dam, Marked By Service Road Bridge To Ends In Backwaters Of Lake Lillinonah, Near Roxbury Falls
Begins Below The Tailrace Of The Lower Collinsville Dam To The Route 187 Bridge
Kent Bridge To Boardman Bridge
The Confluence With The Nepaug River To A Point 0.2 Miles Below The Lower Collinsville Dam Tailrace
New Hartford/Canton Town Line To The Confluence With The Nepaug River