Old Mill Pond Dam
Old Mill Pond Dam is an earth dam located in Monmouth County, New Jersey, built in 1948. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Old Mill Pond Dam
The primary purpose of Old Mill Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Township Of Wall (local government). It impounds the Wreck Pond Brook near Spring Lake.
The dam stands 15 feet tall and stretches 850 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 68 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1948, 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 03/15/2024.
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Location
| State | New Jersey |
| County | Monmouth |
| Nearest City | Spring Lake |
| River/Stream | Wreck Pond Brook |
| Coordinates | 40.14418, -74.05355 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 850 ft |
| Year Completed | 1948 (78 years old) |
Storage & Hydraulics
| NID Storage | 68 acre-ft |
| Max Storage | 68 acre-ft |
| Normal Storage | 35 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 7 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Township of Wall |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 03/15/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00602 |
| Federal ID | NJ00602 |
| More Info | State Dam Safety Program |