Forest Lake Dam
Forest Lake Dam is a masonry dam located in Sussex County, New Jersey, built in 1951. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Forest Lake Dam
The primary purpose of Forest Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Forest Lakes Club (private). It impounds the Pequest River-tr near Andover.
The dam stands 20 feet tall and stretches 300 feet across, creates a reservoir covering 30 acres, has a storage capacity of 61 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1951, the structure is well into its service life at over 50 years 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 12/06/2024.
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 |
| Nearest City | Andover |
| River/Stream | Pequest River-tr |
| Coordinates | 40.97438, -74.73290 |
Physical Characteristics
| Dam Type | Masonry |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 300 ft |
| Year Completed | 1951 (75 years old) |
Storage & Hydraulics
| NID Storage | 61 acre-ft |
| Normal Storage | 61 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 2 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Forest Lakes Club |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 12/06/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00324 |
| Federal ID | NJ00324 |
| More Info | State Dam Safety Program |