Thelon River

Stream in eastern Fort Smith region, Northwest Territories, and central Keewatin region, Nunavut territory, Canada. It drains a major portion of the Barren Grounds (a sub-Arctic prairie region). Arising from several lakes, including Whitefish and Lynx, east of Great Slave Lake, the river flows through Thelon Wildlife Sanctuary (where there are musk-oxen) in an easterly