Kazan River, river in Nunavut, Canada. It is a major tributary of the Thelon River, draining part of the Barren Grounds (a subarctic prairie region). Arising from Snowbird and Kasba lakes, north of the Manitoba-Saskatchewan provincial boundary, the river flows northeastward for 455 miles (730 km) through a tortuous course of innumerable rapids and lakes (including Ennadai, Angikuni, and Yathkyed) before joining the Thelon River at the south shore of Baker Lake, near the Hudson’s Bay Company trading post of the same name. The Kazan River, its name an Indian word for “white partridge,” was explored by James and Joseph Tyrrell in 1893–94.