Haledon Reservoir Dam
Haledon Reservoir Dam is an earth dam located in Passaic County, New Jersey, built in 1919. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Haledon Reservoir Dam
Haledon Reservoir Dam is a dam in Passaic, New Jersey. The dam is owned by Borough Of Franklin Lakes (local government). It impounds the Molly Ann Brook near North Haledon.
The dam stands 25 feet tall and stretches 625 feet across, creates a reservoir covering 75 acres, has a maximum storage capacity of 1,280 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1919, the structure is over a century old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. 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 06/18/2024.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The New Jersey dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | New Jersey |
| County | Passaic |
| Nearest City | North Haledon |
| River/Stream | Molly Ann Brook |
| Coordinates | 40.97868, -74.19587 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 625 ft |
| Year Completed | 1919 (107 years old) |
Storage & Hydraulics
| NID Storage | 1,280 acre-ft |
| Max Storage | 1,280 acre-ft |
| Normal Storage | 775 acre-ft |
| Surface Area | 75 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 750 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Borough of Franklin Lakes |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/18/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00021 |
| Federal ID | NJ00021 |
| More Info | State Dam Safety Program |