Kakisa River a while, then turns east, where it builds a complex lake and channel system before it empties into the Tathlina Lake at its western extremity. It flows out the north side of the lake and continues north, receives the waters of Gull Creek, then flows into the Kakisa Lake at its southern shore. It flows out at the eastern side of the lake, drops through the Lady Evelyn Falls before it is crossed by the Mackenzie Highway. It continues northwards, then empties into the Mackenzie River, downstream from the Great Slave Lake, at an elevation of . Kakisa River The
Mackenzie River the northwest, establishing the present flow direction to the Arctic. Fluvial deposits and other erosional evidence indicate that around the end of the Pleistocene, about 13,000 years ago, the Mackenzie channel was scoured by one or more massive glacial lake outburst floods unleashed from Lake Agassiz, formed by melting ice west of the present-day Great Lakes. At its peak, Agassiz had a greater volume than all present-day freshwater lakes combined. This is believed to have disrupted currents in the Arctic Ocean and led to an abrupt 1,300-year-long cold temperature shift called the Younger Dryas. The Mackenzie carries a very large