Northwest Territories April 1, 1999, when the territory was subdivided to create Nunavut to the east, via the "Nunavut Act" and the "Nunavut Land Claims Agreement". While Nunavut is mostly Arctic tundra, the Northwest Territories has a slightly warmer climate and is both boreal forest (taiga), and tundra, and its most northern regions form part of the Canadian Arctic Archipelago. The Northwest Territories is bordered by Canada's two other territories, Nunavut to the east and Yukon to the west, and by the provinces of British Columbia, Alberta, and Saskatchewan to the south. The name is descriptive, adopted by the British government during
Back River (Nunavut) Back River (Nunavut) The Back River (Dogrib: Thlewechodyeth, Inuktitut: Haningayok, or Great Fish River) is the 20th longest Canadian river and is located in the Northwest Territories and Nunavut. It rises at an unnamed lake in the North Slave Region of the Northwest Territories and flows more than mostly through the Kivalliq Region, Nunavut, to its mouth at the Arctic Ocean in the Kitikmeot Region of Nunavut. The river begins at the outflow of an unnamed lake at an elevation of and flows west into Sussex Lake, then north to Muskox Lake, at the border between the Northwest Territories and