Libby Brook
Libby Brook is an earth dam located in Aroostook County, Maine, built in 1965. It carries a High hazard potential classification and has a unsatisfactory condition assessment.
About Libby Brook
The primary purpose of Libby Brook is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Fort Fairfield (local government). It impounds the Libby.
The dam stands 53 feet tall and stretches 390 feet across, creates a reservoir covering 7 acres, and has a maximum storage capacity of 405 acre-feet. Completed in 1965, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. An emergency action plan is in place for this dam. The most recent inspection on record was 05/11/2022.
At 53 feet, this dam is taller than 94% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Maine dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Maine |
| County | Aroostook |
| River/Stream | Libby |
| Coordinates | 46.75333, -67.84667 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 53 ft |
| Dam Height | 53 ft |
| Dam Length | 390 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 405 acre-ft |
| Max Storage | 405 acre-ft |
| Normal Storage | 370 acre-ft |
| Surface Area | 7 acres |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Fort Fairfield |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Unsatisfactory |
| Last Inspection | 05/11/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | ME00493 |
| Federal ID | ME00493 |
| More Info | State Dam Safety Program |