Hay River (Canada) border, the annual discharge is . Hay River (Canada) The Hay River (in South Slavey: "Kátå’odehche") is a large river in northern Alberta and southern Northwest Territories, Canada. It originates in the muskeg of north western Alberta, flows west to British Columbia, then curves northward and returns to Alberta, where it follows a north-northeast course towards the Northwest Territories. After passing over two main waterfalls, the Alexandra Falls and Louise Falls, it flows through the town of Hay River and discharges into the Great Slave Lake. From there, its waters are carried to the Arctic Ocean by the Mackenzie River.
Mackenzie River (Queensland) and splits as an anabranch on multiple occasions. The river is joined by twenty-four tributaries including the Isaac and Connors rivers and Funnel Creek. Northeast of Duaringa, the Mackenzie is joined by the Dawson River and together they form the Fitzroy River. From source to mouth, the Mackenzie River descends over its course. The Bingegang Weir near Middlemount contains barramundi, southern saratoga and golden perch. The Bedford Weir and Tartrus Weir are also stocked with barramundi. Bedford Weir is popular with water-skiers and camping is permitted adjacent to the reservoir. The river was discovered by colonial Europeans in 1844 by