| Boreas River | |
|---|---|
 Boreas River by Hewitt Eddy Trail | |
  Location of the mouth of the Boreas River  Boreas River (the United States) | |
| Location | |
| Country | United States |
| State | New York |
| Counties | Essex, Hamilton |
| Physical characteristics | |
| Source | Boreas Ponds |
| • location | NNE of Boreas River (hamlet) |
| • coordinates | 44°02′35″N 73°54′21″W / 44.0431124°N 73.9056959°W[1] |
| • elevation | 1,978 ft (603 m)[2] |
| Mouth | Hudson River |
• location | SE of Forks Mountain |
• coordinates | 43°47′51″N 74°02′52″W / 43.7975639°N 74.0479163°W[1] |
• elevation | 1,161 ft (354 m)[1] |
Boreas River is a river in Essex County and Hamilton County in the U.S. State of New York. Boreas River begins at Boreas Ponds north-northeast of the Hamlet of Boreas River and flows southeastward before converging with the Hudson River southeast of Forks Mountain.