East Branch Mattawamkeag River

East Branch Mattawamkeag River
Location
CountryUnited States
Physical characteristics
Source 
 • locationMaine
 • elevation710 feet (220 m)
Mouth 
 • location
Mattawamkeag River
 • coordinates
45°50′02″N 67°59′27″W / 45.8338°N 67.9908°W / 45.8338; -67.9908
 • elevation
365 feet (111 m)
Length36 miles (58 km)
Basin features
ProgressionMattawamkeag River – Penobscot River

The East Branch Mattawamkeag River is a tributary of the Mattawamkeag River in Aroostook County, Maine. From its source (46°13′51″N 68°08′53″W / 46.2307°N 68.1480°W / 46.2307; -68.1480 (East Branch Mattawamkeag River source)) in Dudley (Maine Township 7, Range 3, WELS), the river runs 36 miles (58 km) south and southeast to its confluence with the West Branch Mattawamkeag River in Haynesville, about 10 miles (16 km) west of the Canada–United States border.