New Jersey No Name # 40 Dam
New Jersey No Name # 40 Dam is an earth dam located in Passaic County, New Jersey. It carries a High hazard potential classification and has a poor condition assessment.
About New Jersey No Name # 40 Dam
The primary purpose of New Jersey No Name # 40 Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Division Of Parks And Forestry (state). It impounds the Post Brook-tr near Bloomingdale.
The dam stands 15 feet tall and stretches 190 feet across, creates a reservoir covering 23 acres, has a maximum storage capacity of 226 acre-feet, and collects water from a drainage area of 0 square miles.
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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 09/19/2024.
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 | Bloomingdale |
| River/Stream | Post Brook-tr |
| Coordinates | 41.05790, -74.36582 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 190 ft |
Storage & Hydraulics
| NID Storage | 226 acre-ft |
| Max Storage | 226 acre-ft |
| Normal Storage | 108 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,850 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Division of Parks and Forestry |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 09/19/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00208 |
| Federal ID | NJ00208 |
| More Info | State Dam Safety Program |