Lake Shenandoah Dam is an earth dam located in Ocean County, New Jersey, built in 1934. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 17 ft17 ft tall and 375 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Lake Shenandoah Dam
The primary purpose of Lake Shenandoah Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by County of Ocean (local government). It impounds the South Branch Metedeconk River.
The dam stands 17 feet tall and stretches 375 feet across, creates a reservoir covering 45 acres, has a storage capacity of 111 acre-feet, and collects water from a drainage area of 29 square miles. Completed in 1934, 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 09/15/2023.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | New Jersey |
| County | Ocean |
| River/Stream | South Branch Metedeconk River |
| Coordinates | 40.08598, -74.18505 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 375 ft |
| Year Completed | 1934 (92 years old) |
Storage & Hydraulics
| NID Storage | 111 acre-ft |
| Normal Storage | 111 acre-ft |
| Surface Area | 45 acres |
| Drainage Area | 29 sq mi |
| Max Discharge | 3,019 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | County of Ocean |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 09/15/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00099 |
| Federal ID | NJ00099 |
| More Info | State Dam Safety Program |