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
Wollaston Lake Wollaston Lake Wollaston Lake is a lake in northeastern Saskatchewan, Canada. It is northeast of Prince Albert. With a surface area of (excluding islands; if islands are included), it is the largest bifurcation lake in the world – that is, a lake that drains naturally in two directions. About 10% of the lake's water drains into the Fond du Lac River, which flows out of the lake to the northwest, where it drains into Lake Athabasca, which ultimately drains into the Arctic Ocean via the Mackenzie River system. The rest of the water drains into the Cochrane River, which flows