Carnegie Lake Dam
Carnegie Lake Dam is a concrete dam located in Mercer County, New Jersey, built in 1900. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Carnegie Lake Dam
The primary purpose of Carnegie Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Princeton University (private). It impounds the Millstone River near Kingston.
The dam stands 28 feet tall and stretches 724 feet across, creates a reservoir covering 245 acres, has a maximum storage capacity of 5,326 acre-feet, and collects water from a drainage area of 159 square miles. Completed in 1900, the structure is over a century 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 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 07/05/2023.
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Location
| State | New Jersey |
| County | Mercer |
| Nearest City | Kingston |
| River/Stream | Millstone River |
| Coordinates | 40.37063, -74.62150 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 724 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 5,326 acre-ft |
| Max Storage | 5,326 acre-ft |
| Normal Storage | 1,344 acre-ft |
| Surface Area | 245 acres |
| Drainage Area | 159 sq mi |
| Max Discharge | 14,420 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Princeton University |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/05/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00150 |
| Federal ID | NJ00150 |
| More Info | State Dam Safety Program |