| Port Warren, New Jersey | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | USA New Jersey Warren County#USA New Jersey#USA |
| Pushpin Label: | Port Warren |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Warren |
| Subdivision Type3: | Township |
| Subdivision Name3: | Greenwich |
| Timezone: | Eastern (EST) |
| Utc Offset: | −05:00 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | −04:00 |
| Elevation M: | 79 |
| Elevation Ft: | 259 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 879449 |
Port Warren is an unincorporated community located within Greenwich Township in Warren County, New Jersey.
Inclined Plane 9 West of the Morris Canal was located here. It was the largest plane of the canal and also one of only three double-track planes.[1] The plane tender's house is now the Jim and Mary Lee Morris Canal Museum.[2] The interaction of the Lopatcong Creek with the canal resulted in building an overflow and waste weir downstream of the inclined plane.[3]