St. Joseph River (Maumee River tributary)

St. Joseph River
Little St. Joseph River, Bean Creek, Kochisahsepe
Map of the Maumee River watershed showing the St. Joseph River.
Location
CountryUnited States
Physical characteristics
Source 
  locationHillsdale County, Michigan
  coordinates41°38′53″N 84°33′56″W / 41.6480556°N 84.5655556°W / 41.6480556; -84.5655556 (Saint Joseph River origin)
  elevation856 ft (261 m)
Mouth 
  location
Maumee River, Ft. Wayne, Indiana
  coordinates
41°05′00″N 85°07′56″W / 41.0833333°N 85.1322222°W / 41.0833333; -85.1322222 (Saint Joseph River mouth)
  elevation
751 ft (229 m)
Length100 mi (160 km)
Basin features
Tributaries 
  leftWest Branch St. Joseph River
  rightEast Branch St. Joseph River
GNIS ID2678706

The St. Joseph River (Miami-Illinois: Kociihsasiipi) is an 86.1-mile-long (138.6 km) tributary of the Maumee River in northwestern Ohio and northeastern Indiana in the United States, with headwater tributaries rising in southern Michigan. It drains a primarily rural farming region in the watershed of Lake Erie.

The St. Joseph River of Lake Michigan is an entirely separate river that rises in western Michigan, dips into Indiana, and flows west into Lake Michigan.