Echo Lake Dam
Echo Lake Dam is a concrete dam located in Union County, New Jersey, built in 1930. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Echo Lake Dam
The primary purpose of Echo Lake 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 Union (local government). It impounds the Normahegan Brook.
The dam stands 20 feet tall and stretches 130 feet across, creates a reservoir covering 11 acres, has a storage capacity of 45 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1930, 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 02/06/2024.
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Location
| State | New Jersey |
| County | Union |
| River/Stream | Normahegan Brook |
| Coordinates | 40.67768, -74.33530 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 130 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 45 acre-ft |
| Normal Storage | 45 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,180 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | County of Union |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/06/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00133 |
| Federal ID | NJ00133 |
| More Info | State Dam Safety Program |