Nepaug East Dike, also known as Nepaug Reservoir, is a concrete dam located in Collinsville, Connecticut.
Wind
Humidity
Built in 1916, this structure serves a primary purpose of water supply, with a storage capacity of 40,540 acre-feet and a normal storage level of 29,300 acre-feet. The dam stands at a height of 30 feet and spans a length of 700 feet, creating a reservoir with a surface area of 850 acres and draining a watershed area of 31.9 square miles.
Managed by the Connecticut Department of Energy and Environmental Protection (DEEP), Nepaug East Dike is a critical infrastructure for water resource management in the region. The dam has a high hazard potential and is inspected every two years to ensure its satisfactory condition and compliance with regulatory standards. Its associated structures include CT00370 and CT00370S02, with the last inspection conducted in August 2019.
Located on the Nepaug River, Nepaug East Dike plays a vital role in supplying water to the surrounding communities while also mitigating flood risks and ensuring water resource sustainability. As a key component of Connecticut's water infrastructure, this dam exemplifies the importance of proactive management and maintenance to safeguard both water resources and the environment in the face of changing climate conditions.
Year Completed |
1916 |
Dam Length |
700 |
Dam Height |
30 |
River Or Stream |
NEPAUG RIVER |
Primary Dam Type |
Concrete |
Surface Area |
850 |
Drainage Area |
31.9 |
Nid Storage |
40540 |
Outlet Gates |
Valve |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
30 |
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
Begins Below The Tailrace Of The Lower Collinsville Dam To The Route 187 Bridge
The Hartland Headwaters To The Confluence With The Salmon Brook Main Stem
The Confluence Of The East And West Branches To The Confluence With The Farmington River In East Granby