Mackenzie River Mackenzie River The Mackenzie River (Slavey language: Deh-Cho , "big river" or Inuvialuktun: Kuukpak , "great river"; ) is the longest river system in Canada, and has the second largest drainage basin of any North American river after the Mississippi River. The Mackenzie River flows through a vast, thinly populated region of forest and tundra entirely within the Canadian Northwest Territories, although its many tributaries reach into four other Canadian provinces and territories. The river's main stem is long, flowing north-northwest from Great Slave Lake into the Arctic Ocean, where it forms a large delta at its mouth. Its extensive
Whitefish River (Northwest Territories) Whitefish River (Northwest Territories) The Whitefish River is a river in the Deline District, Sahtu Region, Northwest Territories, Canada. It is in the Arctic Ocean and Mackenzie River drainage basins, is a tributary of Great Bear Lake and has a watershed of . The river begins at an unnamed lake and flows west then southwest to the west side Man Drowned Himself Lake. It exits the lake at the south, takes in the unnamed left tributary arriving from Kekwinatui Lake, and heads southwest, west and northwest. It passes Whitefish River Airfield on the left bank of the river valley, and