Ballingers Mill Pond Dam
Ballingers Mill Pond Dam is an earth dam located in Salem County, New Jersey, built in 1929. It carries a Significant hazard potential classification and has a poor condition assessment.
About Ballingers Mill Pond Dam
The primary purpose of Ballingers Mill Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by County Of Salem (local government). It impounds the Cool Run near Alloway.
The dam stands 18 feet tall and stretches 460 feet across, creates a reservoir covering 18 acres, has a maximum storage capacity of 150 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1929, 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 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 02/28/2025.
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Location
| State | New Jersey |
| County | Salem |
| Nearest City | Alloway |
| River/Stream | Cool Run |
| Coordinates | 39.57750, -75.27050 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 460 ft |
| Year Completed | 1929 (97 years old) |
Storage & Hydraulics
| NID Storage | 150 acre-ft |
| Max Storage | 150 acre-ft |
| Normal Storage | 15 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 800 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | County of Salem |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 02/28/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00109 |
| Federal ID | NJ00109 |
| More Info | State Dam Safety Program |