Fall Mountain Lake Dam
Fall Mountain Lake Dam is an earth dam located in Litchfield County, Connecticut, built in 1900. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Fall Mountain Lake Dam
The primary purpose of Fall Mountain Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Fall Mountain Lake Property Owners Assoc (private). It impounds the Hancock Brook Trib near Plymouth.
The dam stands 12 feet tall and stretches 155 feet across, creates a reservoir covering 27 acres, has a maximum storage capacity of 116 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 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 11/10/2021.
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Location
| State | Connecticut |
| County | Litchfield |
| Nearest City | Plymouth |
| River/Stream | Hancock Brook Trib |
| Coordinates | 41.64921, -72.99051 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 155 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 116 acre-ft |
| Max Storage | 116 acre-ft |
| Normal Storage | 116 acre-ft |
| Surface Area | 27 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 353 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Fall Mountain Lake Property Owners Assoc |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/10/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CT00288 |
| Federal ID | CT00288 |
| More Info | State Dam Safety Program |