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
Fond du Lac River (Saskatchewan) Fond du Lac River (Saskatchewan) The Fond du Lac River is one of the upper branches of the Mackenzie River system, draining into the Arctic Ocean, located in northern Saskatchewan, Canada. The river is long, has a watershed of , and its mean discharge is . The river begins at an elevation of at Cunning Bay on Wollaston Lake. It flows north to Hatchet Lake at an elevation of and continues to Waterfound Bay at an elevation of , where the tributary Waterfound River enters from the left. The river continues north to Kosdaw Lake at an elevation of ,