Great Brook Dam #1
Great Brook Dam #1 is an earth dam located in Middlesex County, Connecticut. It carries a Significant hazard potential classification and has a fair condition assessment.
About Great Brook Dam #1
The primary purpose of Great Brook Dam #1 is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Goodspeed Opera House Foundation, Inc. (private). It impounds the Great Brook near Chester.
The dam stands 14 feet tall and stretches 147 feet across, creates a reservoir covering 1 acres, and collects water from a drainage area of 4 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 11/17/2021.
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Location
| State | Connecticut |
| County | Middlesex |
| Nearest City | Chester |
| River/Stream | Great Brook |
| Coordinates | 41.40705, -72.45433 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 12 ft |
| Dam Length | 147 ft |
Storage & Hydraulics
| Surface Area | 1 acres |
| Drainage Area | 4 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Goodspeed Opera House Foundation, Inc. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 11/17/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT00775 |
| Federal ID | CT00775 |
| More Info | State Dam Safety Program |