Long Pond is a concrete dam located in Penobscot County, Maine, built in 1949. It carries a Low hazard potential classification.
Dam profile
NID height · 14 ft14 ft tall and 425 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 Long Pond
The primary purpose of Long Pond is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Haskell Lumber Inc. (private). It impounds the Cambolasse Stream.
The dam stands 14 feet tall and stretches 425 feet across, creates a reservoir covering 825 acres, has a maximum storage capacity of 4,220 acre-feet, and collects water from a drainage area of 14 square miles. Completed in 1949, the structure is well-established, with more than 75 years of service.
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.
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Location
| State | Maine |
| County | Penobscot |
| River/Stream | Cambolasse Stream |
| Coordinates | 45.41000, -68.43500 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 425 ft |
| Year Completed | 1949 (77 years old) |
Storage & Hydraulics
| NID Storage | 4,220 acre-ft |
| Max Storage | 4,220 acre-ft |
| Normal Storage | 3,070 acre-ft |
| Surface Area | 825 acres |
| Drainage Area | 14 sq mi |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Haskell Lumber Inc. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ME00177 |
| Federal ID | ME00177 |
| More Info | State Dam Safety Program |