Perrineville Dam
Perrineville Dam is an earth dam located in Monmouth County, New Jersey. It carries a Significant hazard potential classification and has a poor condition assessment.
About Perrineville Dam
The primary purpose of Perrineville Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Monmouth County Park System (local government). It impounds the Rocky Brook.
The dam stands 17 feet tall and stretches 450 feet across, creates a reservoir covering 12 acres, has a storage capacity of 36 acre-feet, and collects water from a drainage area of 2 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 05/17/2024.
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Location
| State | New Jersey |
| County | Monmouth |
| River/Stream | Rocky Brook |
| Coordinates | 40.22718, -74.43930 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 450 ft |
Storage & Hydraulics
| NID Storage | 36 acre-ft |
| Normal Storage | 36 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 2 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Monmouth County Park System |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 05/17/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00451 |
| Federal ID | NJ00451 |
| More Info | State Dam Safety Program |