Englishtown Lake Dam
Englishtown Lake Dam is an earth dam located in Monmouth County, New Jersey, built in 1959. It carries a Significant hazard potential classification and has a poor condition assessment.
About Englishtown Lake Dam
The primary purpose of Englishtown Lake 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 Engineering (local government). It impounds the Matchaponix Brook.
The dam stands 13 feet tall and stretches 300 feet across, creates a reservoir covering 7 acres, has a storage capacity of 24 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1959, 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 11/27/2024.
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Location
| State | New Jersey |
| County | Monmouth |
| River/Stream | Matchaponix Brook |
| Coordinates | 40.29415, -74.35848 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 300 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 24 acre-ft |
| Normal Storage | 24 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 779 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Monmouth County Engineering |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 11/27/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00619 |
| Federal ID | NJ00619 |
| More Info | State Dam Safety Program |