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
Mackenzie River (electoral district) meridian in the system of Dominion Land surveys, and on the north by the continental shore of the Arctic Ocean. Mackenzie River (electoral district) Mackenzie River was a federal electoral district in Northwest Territories, Canada, that was represented in the House of Commons of Canada from 1953 to 1963. This riding was created in 1952 when Yukon—Mackenzie River riding was split into two. The parts within the Northwest Territories became Mackenzie River riding. It was abolished in 1962 when it was merged into Northwest Territories riding. It consisted the Provisional District of Mackenzie bounded on the west by the Yukon