Mcmanus Lake Dam
Mcmanus Lake Dam is a concrete dam located in Fairfield County, Connecticut. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Mcmanus Lake Dam
The primary purpose of Mcmanus Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mcmanus Lake Association (private). It impounds the Haviland Brook.
The dam stands 10 feet tall and stretches 120 feet across, creates a reservoir covering 3 acres, 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/17/2020.
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Location
| State | Connecticut |
| County | Fairfield |
| River/Stream | Haviland Brook |
| Coordinates | 41.12787, -73.57030 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 120 ft |
Storage & Hydraulics
| Surface Area | 3 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | McManus Lake Association |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/17/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CT01641 |
| Federal ID | CT01641 |
| More Info | State Dam Safety Program |