Hammonton Lake Dam is an earth dam located in Atlantic County, New Jersey, built in 1902. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 13 ft13 ft tall and 325 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 Hammonton Lake Dam
The primary purpose of Hammonton Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Njdot (state). It impounds the Hammonton Creek near Wescoatwille.
The dam stands 13 feet tall and stretches 325 feet across, creates a reservoir covering 71 acres, has a storage capacity of 426 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1902, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 08/01/2023.
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Location
| State | New Jersey |
| County | Atlantic |
| Nearest City | Wescoatwille |
| River/Stream | Hammonton Creek |
| Coordinates | 39.63110, -74.77122 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 325 ft |
| Year Completed | 1902 (124 years old) |
Storage & Hydraulics
| NID Storage | 426 acre-ft |
| Normal Storage | 426 acre-ft |
| Surface Area | 71 acres |
| Drainage Area | 2 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Njdot |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 08/01/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00476 |
| Federal ID | NJ00476 |
| More Info | State Dam Safety Program |