Moose River (Ontario)

Moose River
Moose River as seen from the ONR railway bridge
Moose River basin map
Location of the mouth of the Moose River in Ontario
Location
CountryCanada
ProvinceOntario
DistrictCochrane
Physical characteristics
Source confluenceMattagami and Missinaibi Rivers
  locationUnnamed wilderness of Unorg. Cochrane District
  coordinates50°44′08″N 81°28′02″W / 50.73556°N 81.46722°W / 50.73556; -81.46722
MouthJames Bay
  location
17 km NE from Moosonee
  coordinates
51°21′02″N 80°23′57″W / 51.35056°N 80.39917°W / 51.35056; -80.39917
Length104 km (65 mi)
Basin size108,500 km2 (41,900 sq mi)
Discharge 
  average1,370 m3/s (48,000 cu ft/s)

The Moose River is a river in the Hudson Plains ecozone of northern Ontario, Canada. The river flows 100 km northeast from the confluence of the Mattagami and Missinaibi Rivers into James Bay. Its drainage basin is 108,500 square kilometres (41,900 sq mi) and it has a mean discharge rate of 1,370 cubic metres (48,000 cu ft). Its full length is 547 kilometres (340 mi) if counted from the head of the Mattagami River.

This river formed part of the water route to Lake Superior in the days of the fur trade. Moose Factory, located on Moose Factory Island near the river's mouth, was a fur trading post of the Hudson's Bay Company and Ontario's first English settlement. Moosonee, on the north bank of the river, is the northern terminus of the Polar Bear Express railway route which begins at Cochrane, Ontario.