The Poquonnock Reservoir Dam, also known as Groton Reservoir, is a vital water supply structure located in Groton, Connecticut.
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Humidity
Built in 1901, this masonry dam stands at a height of 17.5 feet and has a storage capacity of 1,660 acre-feet, serving the community with a normal storage capacity of 921 acre-feet. The dam is situated on the Great Brook river and is regulated by the Connecticut Department of Energy and Environmental Protection (DEEP).
With a surface area of 139 acres and a drainage area of 15.9 square miles, the Poquonnock Reservoir Dam plays a crucial role in managing water resources in the region. The dam has a high hazard potential but is currently in satisfactory condition, as per the last assessment conducted in January 2018. It is inspected every two years to ensure its structural integrity and overall safety for the surrounding area.
Despite not having a spillway type specified, the dam has a spillway width of 209 feet and a maximum discharge capacity of 1,160 cubic feet per second. The primary purpose of the Poquonnock Reservoir Dam is water supply, and it continues to fulfill this role effectively for the residents of Groton and beyond. As a key component of the local water infrastructure, the dam's importance in managing water resources and ensuring water supply reliability cannot be overstated.
Year Completed |
1901 |
Dam Length |
290 |
Dam Height |
17.5 |
River Or Stream |
GREAT BROOK |
Primary Dam Type |
Masonry |
Surface Area |
139 |
Drainage Area |
15.9 |
Nid Storage |
1660 |
Hazard Potential |
High |
Nid Height |
18 |