Moose Pac Lake Dam is an earth dam located in Morris County, New Jersey, built in 1918. It carries a Significant hazard potential classification and has a poor 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 Moose Pac Lake Dam
The primary purpose of Moose Pac Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Narendra Patel (private). It impounds the East Branch Rockaway River near Jefferson.
The dam stands 10 feet tall and stretches 75 feet across, creates a reservoir covering 22 acres, has a storage capacity of 165 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1918, 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 03/10/2025.
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 | Jefferson |
| River/Stream | East Branch Rockaway River |
| Coordinates | 41.02515, -74.50678 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 75 ft |
| Year Completed | 1918 (108 years old) |
Storage & Hydraulics
| NID Storage | 165 acre-ft |
| Normal Storage | 165 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Narendra Patel |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 03/10/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00281 |
| Federal ID | NJ00281 |
| More Info | State Dam Safety Program |