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
Mackenzie River (Queensland) Mackenzie River (Queensland) Note: Mackenzie River, Queensland is a locality but has no WP article. The Mackenzie River is a river located in Central Queensland, Australia. The Mackenzie River is a major tributary of the Fitzroy River, part of the largest river catchment flowing to the eastern coast of Australia. Formed by the confluence of the Comet and Nogoa rivers flowing from the Expedition Range, the river rises north of and flows generally north by east towards the Broadsound Range. North of the settlement of , the river flows south by east and west of the Goodedulla National Park towards