Piwei River

Piwei River
Nelson River drainage basin
Location of the mouth in Saskatchewan
Piwei River (Saskatchewan)
Location
Country Canada
Provinces
Rural municipalityRM of Hudson Bay No. 394
Physical characteristics
SourcePorcupine Hills
  locationPiwei Lakes
  coordinates52°32′11″N 103°09′29″W / 52.5365°N 103.1580°W / 52.5365; -103.1580
  elevation511 m (1,677 ft)
MouthEtomami River
  coordinates
52°26′01″N 102°40′49″W / 52.4336°N 102.6802°W / 52.4336; -102.6802
  elevation
477 m (1,565 ft)
Basin features
River systemRed Deer River
Tributaries 
  rightBig Valley Creek, Ravina Creek, Cameron Creek, Gara Creek

Piwei River is a river in the east-central part of the Canadian province of Saskatchewan in the boreal forest ecozone of Canada. It begins at the western end of the Porcupine Hills at Piwei Lakes and heads in an easterly direction through a glacier-formed valley and into the Etomami River, which is a tributary of the Red Deer River.

The river is accessed from Highways 984 and 983. Save for a small recreation park on the river's north bank, there are no communities nor settlements along its course. Big Valley Lake Ecological Reserve, one of Saskatchewan's Representative Area Ecological Reserves, is in Piwei River's watershed upstream along Big Valley Creek's course on the shore of Big Valley Lake.