East Branch Penobscot River

East Branch Penobscot River
East Branch Penobscot River, northeast of Millinocket, Maine.
Location
CountryUnited States
Physical characteristics
Source 
  locationMaine
  elevation1,000 feet (300 m)
Mouth 
  location
Penobscot River
  coordinates
45°36′32″N 68°32′02″W / 45.60889°N 68.53389°W / 45.60889; -68.53389
  elevation
240 feet (70 m)
Length75 miles (121 km)
Basin features
Tributaries 
  leftSeboeis River

The East Branch Penobscot River is a 75.3-mile-long (121.2 km) tributary of Maine's Penobscot River. It flows in Piscataquis County and Penobscot County.