Eagleville Dam
Eagleville Dam is an earth dam located in Tolland County, Connecticut, built in 1860. It carries a High hazard potential classification and has a fair condition assessment.
About Eagleville Dam
The primary purpose of Eagleville Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Connecticut Deep (state). It impounds the Willimantic River near South Coventry Sta.
The dam stands 18 feet tall and stretches 504 feet across, creates a reservoir covering 83 acres, has a maximum storage capacity of 900 acre-feet, and collects water from a drainage area of 111 square miles. Completed in 1860, the structure is one of the older dams in the region, with over a century and a half of service.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 04/30/2024.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Connecticut dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Connecticut |
| County | Tolland |
| Nearest City | South Coventry Sta |
| River/Stream | Willimantic River |
| Coordinates | 41.78475, -72.28097 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 504 ft |
| Year Completed | 1860 (166 years old) |
Storage & Hydraulics
| NID Storage | 900 acre-ft |
| Max Storage | 900 acre-ft |
| Normal Storage | 320 acre-ft |
| Surface Area | 83 acres |
| Drainage Area | 111 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Connecticut DEEP |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 04/30/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CT00161 |
| Federal ID | CT00161 |
| More Info | State Dam Safety Program |