Fern Lake Dam is a concrete dam located in Clinton County, New York, built in 1912. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 11 ft11 ft tall and 125 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Fern Lake Dam
Fern Lake Dam is a dam in Clinton, New York. The dam is owned by Town of Black Brook (local government). It impounds the Tr-black Brook near Black Brook.
The dam stands 11 feet tall and stretches 125 feet across, creates a reservoir covering 422 acres, has a maximum storage capacity of 1,860 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1912, 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 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 09/26/2023.
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Location
| State | New York |
| County | Clinton |
| Nearest City | Black Brook |
| River/Stream | Tr-black Brook |
| Coordinates | 44.48361, -73.72889 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 125 ft |
| Year Completed | 1912 (114 years old) |
Storage & Hydraulics
| NID Storage | 1,860 acre-ft |
| Max Storage | 1,860 acre-ft |
| Normal Storage | 1,690 acre-ft |
| Surface Area | 422 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 40 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | Town of Black Brook |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 09/26/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY00008 |
| Federal ID | NY00008 |
| More Info | State Dam Safety Program |