| Machias River | |
|---|---|
![]() | |
| Location | |
| Country | United States |
| Physical characteristics | |
| Source | |
| • location | Maine |
| Mouth | |
• location | Aroostook River |
• coordinates | 46°37′19″N68°25′17″W / 46.6219°N 68.4215°W /46.6219; -68.4215 |
• elevation | 530 feet (160 m) |
| Length | 33 mi (53 km) |
| Basin features | |
| Progression | Aroostook —St. John —Bay of Fundy |
TheMachias River is a major tributary of theAroostook River, flowing 33.4 miles (53.8 km)[1] throughAroostook County in the northern part of the state ofMaine,USA. From the outflow of Big Machias Lake (46°40′45″N68°45′54″W / 46.6793°N 68.7650°W /46.6793; -68.7650 (Machias River source)) in Maine Township 12, Range 8, WELS, the river runs southeast and east to its confluence with the Aroostook inAshland.

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