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
Christina Lake (Alberta) River at its western end. The Jackfish River flows before it empties into the Christina River, a tributary of the Clearwater River. The waters eventually reach the Arctic Ocean via the Athabasca and MacKenzie Rivers. Christina Lake and the Christina River were named to honour Christine Gordon, originally from Scotland, who was the first white woman to live permanently in the Fort McMurray area, where she remained until her death in the 1940s. She was highly respected by the community, including the First Nations and Métis. Gordon, partly based on knowledge gleaned from a Scottish home nursing book, made her