Liberty Lake Dam
Liberty Lake Dam is an earth dam located in Warren County, New Jersey. It carries a Significant hazard potential classification and has a poor condition assessment.
About Liberty Lake Dam
The primary purpose of Liberty Lake Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Township Of Liberty (local government). It impounds the Mountain Lake Brook.
The dam stands 23 feet tall and stretches 680 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 11 acre-feet, and collects water from a drainage area of 0 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. An emergency action plan is in place for this dam. The most recent inspection on record was 03/09/2023.
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Location
| State | New Jersey |
| County | Warren |
| River/Stream | Mountain Lake Brook |
| Coordinates | 40.88277, -74.95585 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 680 ft |
Storage & Hydraulics
| NID Storage | 43 acre-ft |
| Max Storage | 11 acre-ft |
| Normal Storage | 43 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 86 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Township of Liberty |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 03/09/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00994 |
| Federal ID | NJ00994 |
| More Info | State Dam Safety Program |