Songo Lock is a concrete dam located in Cumberland County, Maine, built in 1830. It carries a Low hazard potential classification.
Dam profile
NID height · 19 ft19 ft tall and 160 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 Songo Lock
The primary purpose of Songo Lock is navigation. The dam maintains water levels sufficient for boat and barge traffic, supporting commercial or recreational navigation on the waterway. The dam is owned by State of Maine, Bureau of Parks and Lands (state). It impounds the Songo River.
The dam stands 19 feet tall and stretches 160 feet across, creates a reservoir covering 5,629 acres, and has a maximum storage capacity of 18,330 acre-feet. Completed in 1830, 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 12/10/2015. That was over 10 years ago.
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Location
| State | Maine |
| County | Cumberland |
| River/Stream | Songo River |
| Coordinates | 43.93222, -70.57721 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 160 ft |
| Year Completed | 1830 (196 years old) |
Storage & Hydraulics
| NID Storage | 18,330 acre-ft |
| Max Storage | 18,330 acre-ft |
| Normal Storage | 12,180 acre-ft |
| Surface Area | 5,629 acres |
Ownership & Safety
| Purpose | Navigation |
| Owner | State of Maine, Bureau of Parks and Lands |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 12/10/2015 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ME00339 |
| Federal ID | ME00339 |
| More Info | State Dam Safety Program |