Attawapiskat River

Attawapiskat River
Kâh-tawâpiskâk
Location of the mouth of the Attawapiskat River in Ontario.
EtymologyFrom the Swampy Cree (Omushkegowuk) tawâpiskâ (Gap Between the Rocks)
Native nameÊh-tawâpiskât sîpiy (Swampy Cree)
Location
CountryCanada
ProvinceOntario
RegionNorthwestern Ontario
DistrictKenora
Physical characteristics
SourceAttawapiskat Lake
  coordinates52°09′32″N 87°35′45″W / 52.15889°N 87.59583°W / 52.15889; -87.59583
  elevation241 m (791 ft)
MouthAkimiski Strait, James Bay
  coordinates
52°58′00″N 82°15′40″W / 52.96667°N 82.26111°W / 52.96667; -82.26111
  elevation
0 m (0 ft)
Length748 km (465 mi)
Basin size50,500 km2 (19,500 sq mi)
Discharge 
  average626 m3/s (22,100 cu ft/s)
Basin features
River systemJames Bay drainage basin
Tributaries 
  leftNorth Channel, Muketei River
  rightMissisa River, Streatfeild River

The Attawapiskat River (/ˌætəˈwɑːpɪskæt/) is a river in Kenora District in northwestern Ontario, Canada, that flows east from Attawapiskat Lake to James Bay. It is the third largest river entirely in Ontario.

The Otoskwin–Attawapiskat River Provincial Park includes parts of the river from Attawapiskat Lake to a point just upstream of the confluence with the Muketei River.