Union River (Michigan)

Union River
Location
CountryUnited States
Physical characteristics
Source 
  locationMichigan
Mouth 
  location
46°49′09″N 89°37′11″W / 46.81917°N 89.61972°W / 46.81917; -89.61972

The Union River is a 5.5-mile-long (8.9 km) river in Porcupine Mountains Wilderness State Park on the Upper Peninsula of Michigan in the United States. It is a tributary of Lake Superior.