Lake Plymouth Dam
Lake Plymouth Dam is an earth dam located in Litchfield County, Connecticut, built in 1900. It carries a Significant hazard potential classification and has a fair condition assessment.
About Lake Plymouth Dam
The primary purpose of Lake Plymouth Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Plymouth Community Assoc Inc. (private). It impounds the Todd Hollow Bk Trib near Plymouth.
The dam stands 11 feet tall and stretches 331 feet across, creates a reservoir covering 45 acres, has a maximum storage capacity of 128 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1900, the structure is over a century old.
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 04/22/2019.
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Location
| State | Connecticut |
| County | Litchfield |
| Nearest City | Plymouth |
| River/Stream | Todd Hollow Bk Trib |
| Coordinates | 41.65147, -73.04318 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 331 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 128 acre-ft |
| Max Storage | 128 acre-ft |
| Normal Storage | 128 acre-ft |
| Surface Area | 45 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 133 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lake Plymouth Community Assoc Inc. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 04/22/2019 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT00290 |
| Federal ID | CT00290 |
| More Info | State Dam Safety Program |