Horn River formed along the middle course of the Horn River, and is followed downstream by the "Second Lake". The river turns south-west, where the "Mink Lake" is formed along its course. The Laferte River also flows into the Mink Lake. Horn River then flows south, and it receives the waters of the Bluefish River before it empties into the Mackenzie River, downstream from the Great Slave Lake), immediately upstream from Mills Lake, at an elevation of . The arch made by the river defines the "Horn Plateau", a flat elevated area that rises up to ) to the north and east,
Boats of the Mackenzie River watershed Boats of the Mackenzie River watershed The Mackenzie River in Canada's Northwest Territories is a historic waterway, used for centuries by the original Dene as a travel and hunting corridor. It is part of a larger watershed that includes the Slave, Athabasca, and Peace rivers extending from northern Alberta. In the 1780s, Peter Pond, a trader with the North West Company discovered this watershed and began viable trade with the Athapascan-speaking Dene of these rivers. The Mackenzie River itself, the great waterway extending to the Arctic Ocean, was first put on European maps by Alexander Mackenzie in 1789, the Scottish