Ewans Mill Dam
Ewans Mill Dam is an earth dam located in Gloucester County, New Jersey. It carries a Significant hazard potential classification and has a poor condition assessment.
About Ewans Mill Dam
The primary purpose of Ewans Mill Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Camden Diving Operations, Inc. (private). It impounds the Mullica River.
The dam stands 15 feet tall and stretches 350 feet across, creates a reservoir covering 22 acres, has a storage capacity of 31 acre-feet, and collects water from a drainage area of 5 square miles.
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. The most recent inspection on record was 04/15/2024.
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Location
| State | New Jersey |
| County | Gloucester |
| River/Stream | Mullica River |
| Coordinates | 39.69765, -75.19293 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 350 ft |
Storage & Hydraulics
| NID Storage | 31 acre-ft |
| Normal Storage | 31 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 70 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Camden Diving Operations, Inc. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 04/15/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | NJ00430 |
| Federal ID | NJ00430 |
| More Info | State Dam Safety Program |