| Machias River | |
|---|---|
| Location | |
| Country | United States |
| Physical characteristics | |
| Source | |
| • location | Maine |
| Mouth | |
• location | Aroostook River |
• coordinates | 46°37′19″N 68°25′17″W / 46.6219°N 68.4215°W |
• elevation | 530 feet (160 m) |
| Length | 33 miles (53 km) |
| Basin features | |
| Progression | Aroostook — St. John — Bay of Fundy |
The Machias River is a major tributary of the Aroostook River, flowing 33.4 miles (53.8 km)[1] through Aroostook County in the northern part of the state of Maine, USA. From the outflow of Big Machias Lake (46°40′45″N 68°45′54″W / 46.6793°N 68.7650°W) in Maine Township 12, Range 8, WELS, the river runs southeast and east to its confluence with the Aroostook in Ashland.
