Long Pond is an earth dam located in Penobscot County, Maine, built in 1915. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 775 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Long Pond
Long Pond is a dam in Penobscot, Maine. The dam is owned by Town of Lincoln (local government). It impounds the Mattanawcook Stream.
The dam stands 12 feet tall and stretches 775 feet across, creates a reservoir covering 506 acres, has a maximum storage capacity of 1,794 acre-feet, and collects water from a drainage area of 8 square miles. Completed in 1915, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 11/14/2023.
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Location
| State | Maine |
| County | Penobscot |
| River/Stream | Mattanawcook Stream |
| Coordinates | 45.33500, -68.42834 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 775 ft |
| Year Completed | 1915 (111 years old) |
Storage & Hydraulics
| NID Storage | 1,794 acre-ft |
| Max Storage | 1,794 acre-ft |
| Normal Storage | 1,410 acre-ft |
| Surface Area | 506 acres |
| Drainage Area | 8 sq mi |
Ownership & Safety
| Owner | Town of Lincoln |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 11/14/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ME00175 |
| Federal ID | ME00175 |
| More Info | State Dam Safety Program |