Mary Elmer Lake Dam
Mary Elmer Lake Dam is an earth dam located in Cumberland County, New Jersey, built in 1924. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Mary Elmer Lake Dam
The primary purpose of Mary Elmer Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by City Of Bridgeton (local government). It impounds the Cohansey River.
The dam stands 15 feet tall and stretches 500 feet across, creates a reservoir covering 22 acres, has a storage capacity of 68 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1924, 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 03/08/2024.
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Location
| State | New Jersey |
| County | Cumberland |
| River/Stream | Cohansey River |
| Coordinates | 39.44628, -75.24723 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 500 ft |
| Year Completed | 1924 (102 years old) |
Storage & Hydraulics
| NID Storage | 68 acre-ft |
| Normal Storage | 68 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 4,078 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | City of Bridgeton |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 03/08/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00068 |
| Federal ID | NJ00068 |
| More Info | State Dam Safety Program |