Echo Lake Upper Dam
Echo Lake Upper Dam is a concrete dam located in Union County, New Jersey, built in 1922. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Echo Lake Upper Dam
The primary purpose of Echo Lake Upper 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 Nomahegan Creek.
The dam stands 17 feet tall and stretches 120 feet across, creates a reservoir covering 10 acres, has a storage capacity of 48 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1922, the structure is over a century 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 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 | Nomahegan Creek |
| Coordinates | 40.67438, -74.34368 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 120 ft |
| Year Completed | 1922 (104 years old) |
Storage & Hydraulics
| NID Storage | 48 acre-ft |
| Normal Storage | 48 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 2 sq mi |
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 | NJ00616 |
| Federal ID | NJ00616 |
| More Info | State Dam Safety Program |