Turkey Hill Reservoir Dam & Dike
Turkey Hill Reservoir Dam & Dike is an earth dam located in Middlesex County, Connecticut. It carries a Significant hazard potential classification and has a poor condition assessment.
About Turkey Hill Reservoir Dam & Dike
The primary purpose of Turkey Hill Reservoir Dam & Dike is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Connecticut Water Company (public utility). It impounds the Great Brook.
The dam stands 10 feet tall and stretches 840 feet across, creates a reservoir covering 76 acres, has a maximum storage capacity of 452 acre-feet, and collects water from a drainage area of 1 square miles.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 11/19/2024.
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Location
| State | Connecticut |
| County | Middlesex |
| River/Stream | Great Brook |
| Coordinates | 41.42323, -72.52092 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 840 ft |
Storage & Hydraulics
| NID Storage | 452 acre-ft |
| Max Storage | 452 acre-ft |
| Normal Storage | 395 acre-ft |
| Surface Area | 76 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Connecticut Water Company |
| Owner Type | Public Utility |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 11/19/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CT01531 |
| Federal ID | CT01531 |
| More Info | State Dam Safety Program |