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
Christina Lake (Alberta) River at its western end. The Jackfish River flows before it empties into the Christina River, a tributary of the Clearwater River. The waters eventually reach the Arctic Ocean via the Athabasca and MacKenzie Rivers. Christina Lake and the Christina River were named to honour Christine Gordon, originally from Scotland, who was the first white woman to live permanently in the Fort McMurray area, where she remained until her death in the 1940s. She was highly respected by the community, including the First Nations and Métis. Gordon, partly based on knowledge gleaned from a Scottish home nursing book, made her