George Lake Dam
George Lake Dam is an earth dam located in Morris County, New Jersey, built in 1909. It carries a Significant hazard potential classification and has a poor condition assessment.
About George Lake Dam
The primary purpose of George Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by County Of Morris Park Commission (local government). It impounds the Electric Brook near Long Valley.
The dam stands 30 feet tall and stretches 230 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 88 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1909, the structure is over a century old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. 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 11/12/2024.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | New Jersey |
| County | Morris |
| Nearest City | Long Valley |
| River/Stream | Electric Brook |
| Coordinates | 40.79897, -74.78453 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 230 ft |
| Year Completed | 1909 (117 years old) |
Storage & Hydraulics
| NID Storage | 88 acre-ft |
| Max Storage | 88 acre-ft |
| Normal Storage | 45 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,200 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | County of Morris Park Commission |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 11/12/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00825 |
| Federal ID | NJ00825 |
| More Info | State Dam Safety Program |