Hidden Valley Lake Dam is an earth dam located in Sussex County, New Jersey. It carries a High hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 75 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Hidden Valley Lake Dam
Hidden Valley Lake Dam is a dam in Sussex, New Jersey. The dam is owned by National Winter Activity Center (private). It impounds the Pachuck Creek-tr.
The dam stands 10 feet tall and stretches 75 feet across, creates a reservoir covering 12 acres, 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 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 04/01/2024.
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 | Sussex |
| River/Stream | Pachuck Creek-tr |
| Coordinates | 41.17863, -74.48512 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 75 ft |
Storage & Hydraulics
| Surface Area | 12 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Owner | National Winter Activity Center |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/01/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00991 |
| Federal ID | NJ00991 |
| More Info | State Dam Safety Program |