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
Mersey River (Tasmania) Rowallan. The Rowallan Power Station, part of the Rowallan Dam is a hydro-electric station is also located on the Mersey. Fish Creek is also a tributary to Lake Rowallan. The Mersey then flows to Lake Parangana. Lake Parangana also takes inflows from the Fisher River, this has a tributary of the little Fisher River and Fisher River flows through Lake MacKenzie and the Fisher Power Station which also has a tributary from Explorer Creek which is fed from Lake Explorer. Water from Lake Parangana is transferred west via tunnels to Lemonthyme Power Station. The water runs into Lake Cethana. The