Lock is a timber crib dam located in Piscataquis County, Maine, built in 1875. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 280 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 Lock
The primary purpose of Lock 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 Bpl, Doc/state of Maine (allagash Wilderness Waterway) (state). It impounds the Allagash Stream.
The dam stands 15 feet tall and stretches 280 feet across, creates a reservoir covering 11,200 acres, has a maximum storage capacity of 105,200 acre-feet, and collects water from a drainage area of 204 square miles. Completed in 1875, the structure is one of the older dams in the region, with over a century and a half 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. The most recent inspection on record was 11/07/2007. That was over 18 years ago.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Maine |
| County | Piscataquis |
| River/Stream | Allagash Stream |
| Coordinates | 46.27478, -69.35233 |
Physical Characteristics
| Dam Type | Timber Crib |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 280 ft |
| Year Completed | 1875 (151 years old) |
Storage & Hydraulics
| NID Storage | 105,200 acre-ft |
| Max Storage | 105,200 acre-ft |
| Normal Storage | 101,000 acre-ft |
| Surface Area | 11,200 acres |
| Drainage Area | 204 sq mi |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Bpl, Doc/state of Maine (allagash Wilderness Waterway) |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 11/07/2007 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ME00198 |
| Federal ID | ME00198 |
| More Info | State Dam Safety Program |