The Thelon River stretches 900 kilometres (560 mi) across northern Canada.Its source is Whitefish Lake in the Northwest Territories, and it flows east to Baker Lake in Nunavut.
The Thelon ultimately drains into Hudson Bay at Chesterfield Inlet.
Within the river, a mix of Arctic and boreal fish species, such as Arctic char, grayling, cisco, humpback and round whitefish, slimy sculpin, spoonhead sculpin and lake trout, co-exist.
