Poplar River (Montana–Saskatchewan)

Poplar River
Poplar River shown highlighted
Location
Countries
  • Canada
  • United States
ProvinceSaskatchewan
StateMontana
Counties
Physical characteristics
Source 
  locationWood Mountain Hills
  coordinates49°15′13″N 106°23′32″W / 49.25361°N 106.39222°W / 49.25361; -106.39222 (Popular River)
Mouth 
  coordinates
48°05′03″N 105°11′08″W / 48.08417°N 105.18556°W / 48.08417; -105.18556 (Popular River)
  elevation
1,942 ft (592 m)
Length167 mi (269 km)
Discharge 
  locationNear Poplar, MT
  average122 cu ft/s (3.5 m3/s)
Basin features
River systemMissouri River
Tributaries 
  leftEast Poplar River
  rightWest Poplar River

Poplar River is a tributary of the Missouri River, approximately 167 miles (269 km) long in Saskatchewan in Canada and Montana in the United States. The river is composed of three main forks – West, Middle, and East Poplar Rivers – that have their source in the Wood Mountain Hills of the Missouri Coteau. Along the river's Middle Fork in Saskatchewan, there is a coal-fired power station. There are also dams built along the river's forks.

Along with the Milk River and Big Muddy Creek, it is one of three waterways in Canada that drain into the Gulf of Mexico.