Seneca Lake Dam
Seneca Lake Dam is an earth dam located in Sussex County, New Jersey. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Seneca Lake Dam
The primary purpose of Seneca Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Seneca Lake Beach Association (private). It impounds the Lubbers Run.
The dam stands 11 feet tall and stretches 200 feet across, creates a reservoir covering 23 acres, has a storage capacity of 60 acre-feet, and collects water from a drainage area of 1 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 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 10/17/2024.
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Location
| State | New Jersey |
| County | Sussex |
| River/Stream | Lubbers Run |
| Coordinates | 40.99955, -74.64763 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 200 ft |
Storage & Hydraulics
| NID Storage | 60 acre-ft |
| Normal Storage | 60 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Seneca Lake Beach Association |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/17/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00768 |
| Federal ID | NJ00768 |
| More Info | State Dam Safety Program |