Athabasca River is marked by rapids, impeding navigation southwest of Fort McMurray. The Athabasca River travels before draining into the Peace-Athabasca Delta near Lake Athabasca south of Fort Chipewyan. From there, its waters flow north as Rivière des Rochers, then joining the Peace River to form the Slave River that empties into Great Slave Lake and discharges through the Mackenzie River system into the Arctic Ocean. The cumulative drainage area is . Numerous communities are located on the banks of the Athabasca River, including Jasper, Brule, Entrance, Hinton, Whitecourt, Fort Assiniboine, Smith, Athabasca, Fort McMurray, and Fort McKay. An independent study has
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