Mackenzie River Great Slave Lake, at Fort Resolution, Northwest Territories. The Slave is by far the largest river flowing into the lake, with an annual flow of 108 km (87 million acre-feet). It contributes about 77% of the overall inflow, and forms a large delta where it enters the lake. Other rivers entering Great Slave Lake area the Taltson, Lockhart and Hay Rivers, the latter of which also extends into Alberta and BC. The Mackenzie River issues from the western end of Great Slave Lake about south-west of Yellowknife. The channel is initially several kilometres wide but narrows to about at Fort
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