Cobbosseecontee Outlet
Cobbosseecontee Outlet is a concrete dam located in Kennebec County, Maine, built in 1900. It carries a Significant hazard potential classification and has a fair condition assessment.
About Cobbosseecontee Outlet
Cobbosseecontee Outlet is a dam in Kennebec, Maine. The dam is owned by Manchester (local government). It impounds the Cobboseecontee Stream.
The dam stands 14 feet tall and stretches 191 feet across, creates a reservoir covering 6,960 acres, has a maximum storage capacity of 67,000 acre-feet, and collects water from a drainage area of 114 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. An emergency action plan is in place for this dam. The most recent inspection on record was 05/30/2024.
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Location
| State | Maine |
| County | Kennebec |
| River/Stream | Cobboseecontee Stream |
| Coordinates | 44.27864, -69.88680 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 191 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 67,000 acre-ft |
| Max Storage | 67,000 acre-ft |
| Normal Storage | 50,750 acre-ft |
| Surface Area | 6,960 acres |
| Drainage Area | 114 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | Manchester |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 05/30/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | ME00096 |
| Federal ID | ME00096 |
| More Info | State Dam Safety Program |