Sylvia's Upper Pond Dam, located in Stonington, Connecticut, is a historic masonry dam built in 1870 for the primary purpose of recreation.
Wind
Humidity
With a height of 12 feet and a length of 120 feet, this dam holds a storage capacity of 262 acre-feet, making it a significant water resource in the area. The dam sits on Stony Brook to the west and Sylvia's Brook to the east, providing a picturesque setting for outdoor enthusiasts and nature lovers.
Despite its age, Sylvia's Upper Pond Dam is regulated by the Connecticut Department of Energy and Environmental Protection (DEEP), ensuring that it is inspected, permitted, and enforced for safety and compliance. The dam has a high hazard potential due to its condition being assessed as fair, prompting a moderate risk assessment. Although the last inspection was conducted in 1986, the dam's emergency action plan status and risk management measures are currently unclear, highlighting the need for updated safety protocols in case of emergencies.
With its rich history, scenic location, and importance as a recreational water source, Sylvia's Upper Pond Dam serves as a focal point for water resource and climate enthusiasts in the New London County area. Its role in providing both environmental benefits and potential risks underscores the need for continued monitoring and maintenance to ensure the safety and sustainability of this cultural landmark.
Year Completed |
1870 |
Dam Length |
120 |
Dam Height |
12 |
River Or Stream |
STONY BROOK (WEST) SYLVIAS BROOK (EAST) |
Primary Dam Type |
Masonry |
Surface Area |
17.2 |
Drainage Area |
2.38 |
Nid Storage |
262 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
12 |
Pawcatuck River At Westerly
|
450cfs |
Pendleton Hill Brook Near Clarks Falls
|
8cfs |
Pawcatuck River At Wood River Junction
|
134cfs |
Wood River At Hope Valley
|
121cfs |
Shetucket River At Taftville
|
885cfs |
Pawcatuck River
|
87cfs |
| Location | Reservations | Toilets |
|---|---|---|
Mystic KOA Holiday
|
||
315 - Burlingham
|
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Camp Watchaug (Westerly YMCA)
|