New Jersey No Name #31 Dam
New Jersey No Name #31 Dam is an earth dam located in Hunterdon County, New Jersey. It carries a High hazard potential classification and has a satisfactory condition assessment.
About New Jersey No Name #31 Dam
New Jersey No Name #31 Dam is a dam in Hunterdon, New Jersey. The dam is owned by New Jersey Water Supply Authority (state). It impounds the Cramers Creek.
The dam stands 23 feet tall and stretches 550 feet across, creates a reservoir covering 7 acres, has a storage capacity of 40 acre-feet, and collects water from a drainage area of 2 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 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 10/16/2024.
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 | Hunterdon |
| River/Stream | Cramers Creek |
| Coordinates | 40.60468, -74.89818 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 550 ft |
Storage & Hydraulics
| NID Storage | 40 acre-ft |
| Normal Storage | 40 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 2 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | New Jersey Water Supply Authority |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/16/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00519 |
| Federal ID | NJ00519 |
| More Info | State Dam Safety Program |