Mt. Kemble Lake Dam is an earth dam located in Morris County, New Jersey, built in 1928. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 36 ft36 ft tall and 285 ft long, taller than 82% of U.S. dams with a recorded height. 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 Mt. Kemble Lake Dam
The primary purpose of Mt. Kemble Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by The Lakeshore Company (private). It impounds the Primrose Brook-tr.
The dam stands 36 feet tall and stretches 285 feet across, creates a reservoir covering 13 acres, has a storage capacity of 118 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1928, 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 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 10/09/2023.
At 36 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | New Jersey |
| County | Morris |
| River/Stream | Primrose Brook-tr |
| Coordinates | 40.74003, -74.52657 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 285 ft |
| Year Completed | 1928 (98 years old) |
Storage & Hydraulics
| NID Storage | 118 acre-ft |
| Normal Storage | 118 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 500 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | The Lakeshore Company |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/09/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00363 |
| Federal ID | NJ00363 |
| More Info | State Dam Safety Program |