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 Lakes are remnants. Today's Mackenzie River is very young in geologic terms – its channel formed over a period of no more than several thousand years as the ice sheet retreated. Prior to the ice ages, only the Peel River tributary flowed through what is now the Mackenzie Delta into the Arctic Ocean. The other tributaries of the Mackenzie combined into the "Bell River" which flowed east into Hudson Bay. During glaciation the weight of the ice sheet depressed northern Canada's terrain to such an extent that when the ice retreated, the Mackenzie system was captured to lower elevations in