Lower Aetna Lake Dam
Lower Aetna Lake Dam is an earth dam located in Burlington County, New Jersey, built in 1926. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Lower Aetna Lake Dam
The primary purpose of Lower Aetna Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Borough Of Medford Lakes (local government). It impounds the Haynes Creek-tr near Medford.
The dam stands 12 feet tall and stretches 240 feet across, creates a reservoir covering 18 acres, has a maximum storage capacity of 136 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1926, the structure is well-established, with more than 75 years of service.
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 02/21/2024.
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Location
| State | New Jersey |
| County | Burlington |
| Nearest City | Medford |
| River/Stream | Haynes Creek-tr |
| Coordinates | 39.86322, -74.80360 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 240 ft |
| Year Completed | 1926 (100 years old) |
Storage & Hydraulics
| NID Storage | 136 acre-ft |
| Max Storage | 136 acre-ft |
| Normal Storage | 106 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 187 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Borough of Medford Lakes |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/21/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00418 |
| Federal ID | NJ00418 |
| More Info | State Dam Safety Program |