Upper Summit Lake (British Columbia) River, Great Slave Lake and the Mackenzie River into the Beaufort Sea portion of the Arctic Ocean. Upper Summit Lake (British Columbia) Upper Summit Lake is a lake in Regional District of Fraser-Fort George, in the Central Interior of British Columbia, Canada, about north of the city of Prince George and south of the community of Bear Lake. It lies just west of Highway 97 (John Hart Highway). Upper Summit Lake is about long and wide, and lies at an elevation of . There are no inflows, and an unnamed creek flows from the southern tip of the lake to
Redknife River Redknife River The Redknife River is a river in the Northwest Territories of Canada. It is a major tributary of the Mackenzie River. The Redknife Formation, a stratigraphical unit of the Western Canadian Sedimentary Basin was named for the river. The Redknife river originates in the "Redknife Hills", at an elevation of . It flows east down the slopes of the hill, then turns north, draws water from a lake system, then turns north-east. It is crossed by the Mackenzie Highway, then turns north and flows into the Mackenzie River at an elevation of , downstream from Fort Providence and