Summit Lake is a lake

Lake

A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...

 in Rainy River District

Rainy River District, Ontario

Rainy River District is a district and census division in Northwestern Ontario in the Canadian province of Ontario. It was created in 1885. It is the only division in Ontario that lies completely in the Central time zone. Its seat is Fort Frances...

, Ontario

Ontario

Ontario is a province of Canada, located in east-central Canada. It is Canada's most populous province and second largest in total area. It is home to the nation's most populous city, Toronto, and the nation's capital, Ottawa....

, Canada

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

. It is about 790 metres (2,592 ft) long and 360 metres (1,181 ft) wide, and lies at an elevation of 380 metres (1,247 ft) about 18 kilometres (11 mi) southeast of the community of Nestor Falls

Sioux Narrows-Nestor Falls, Ontario

Population trend:* Population in 2006: 672* Population in 2001: 577* Population total in 1996: 794** Sioux Narrows : 430* Population in 1991:** Sioux Narrows : 390-External links:*...

. The lake is in the Nelson River

Nelson River

The Nelson River is a river of north-central North America, in the Canadian province of Manitoba. Its full length is , it has mean discharge of , and has a drainage basin of , of which is in the United States...

 system in the Hudson Bay

Hudson Bay

Hudson Bay , sometimes called Hudson's Bay, is a large body of saltwater in northeastern Canada. It drains a very large area, about , that includes parts of Ontario, Quebec, Saskatchewan, Alberta, most of Manitoba, southeastern Nunavut, as well as parts of North Dakota, South Dakota, Minnesota,...

 drainage basin

Drainage basin

A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...

. There are no primary inflows, and the primary outflow, on the west side of the lake, is an unnamed creek west to Kishkutena Lake on the Sabaskong River, which flows into Lake of the Woods

Lake of the Woods

Lake of the Woods is a lake occupying parts of the Canadian provinces of Ontario and Manitoba and the U.S. state of Minnesota. It separates a small land area of Minnesota from the rest of the United States. The Northwest Angle and the town of Angle Township can only be reached from the rest of...

, and then via the Winnipeg River

Winnipeg River

The Winnipeg River is a Canadian river which flows from Lake of the Woods in the province of Ontario to Lake Winnipeg in Manitoba. This river is long from the Norman Dam in Kenora to its mouth at Lake Winnipeg. Its watershed is in area, mainly in Canada. About of this area is in northern...

and Nelson River into Hudson Bay. The Height of Land portage runs from the north tip of the lake to Kishkutena Lake.