Lebanon Lake Dam is an earth dam located in Burlington County, New Jersey, built in 1956. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 925 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 Lebanon Lake Dam
The primary purpose of Lebanon Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Division of Parks and Forestry (state). It impounds the Bisphams Mill Creek.
The dam stands 10 feet tall and stretches 925 feet across, creates a reservoir covering 32 acres, has a storage capacity of 110 acre-feet, and collects water from a drainage area of 10 square miles. Completed in 1956, the structure is well into its service life at over 50 years 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 10/26/2023.
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Location
| State | New Jersey |
| County | Burlington |
| River/Stream | Bisphams Mill Creek |
| Coordinates | 39.90652, -74.56732 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 925 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 110 acre-ft |
| Normal Storage | 110 acre-ft |
| Surface Area | 32 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 120 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Division of Parks and Forestry |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 10/26/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00812 |
| Federal ID | NJ00812 |
| More Info | State Dam Safety Program |