Black Rock Pond Dam, located in Thomaston, Connecticut, is a state-owned structure that serves primarily for recreation purposes.
Wind
Humidity
Completed in 1945, this earth dam stands at a height of 16 feet and has a length of 160 feet, creating a storage capacity of 164 acre-feet. The dam is situated on the Purgatory Brook, with a drainage area of 1.13 square miles and a maximum discharge capacity of 180 cubic feet per second.
Despite its satisfactory condition assessment as of October 2020, Black Rock Pond Dam is classified as having a high hazard potential. The dam features uncontrolled outlet gates and a spillway width of 5 feet, with a surface area of 9 acres and a normal storage capacity of 92 acre-feet. With a hazard potential rating of high, regular inspections and maintenance are crucial to ensure the safety and integrity of the dam structure.
Black Rock Pond Dam is under the regulatory jurisdiction of the Connecticut Department of Energy and Environmental Protection (DEEP), with state permitting, inspection, and enforcement activities in place. The dam poses a risk of inundation in case of a failure, emphasizing the importance of emergency action planning and risk management measures. For water resource and climate enthusiasts, Black Rock Pond Dam stands as a critical infrastructure for both recreation and water resource management in the region.
Year Completed |
1945 |
Dam Length |
160 |
Dam Height |
16 |
River Or Stream |
PURGATORY BROOK |
Primary Dam Type |
Earth |
Surface Area |
9 |
Drainage Area |
1.13 |
Nid Storage |
164 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Nid Height |
16 |
| Location | Reservations | Toilets |
|---|---|---|
Black Rock State Park
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Point Folly - White Memorial
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Windmill Hill - White Memorial
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Cozy Hill Campground
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SR1
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SR2
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