Seymour 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 the Lake Huron

Lake Huron

Lake Huron is one of the five Great Lakes of North America. Hydrologically, it comprises the larger portion of Lake Michigan-Huron. It is bounded on the east by the Canadian province of Ontario and on the west by the state of Michigan in the United States...

 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...

 in Algoma District

Algoma District, Ontario

Algoma District is a district and census division in Northeastern Ontario in the Canadian province of Ontario. It was created in 1858 comprising territory as far west as Minnesota...

, 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 1.7 kilometres (1.1 mi) long and 0.9 kilometre (0.559235462984826 mi) wide, and lies at an elevation of 411 metres (1,348 ft), 60 kilometres (37 mi) northwest of the community of Elliot Lake. The lake is the source of the Rapid River

Rapid River (Algoma District, Ontario)

The Rapid River is a river in Algoma District, Ontario, Canada. The river is about long and begins at Seymour Lake at an elevation of . It travels west and takes in its left tributary the Little Rapid River at an elevation of . The river continues west over a small rapids and a waterfall before...

, which flows via the Mississagi River to Lake Huron. A road, which begins at Highway 129

Highway 129 (Ontario)

King's Highway 129, commonly referred to as Highway 129, is a provincially maintained highway in the Canadian province of Ontario. Located in the Algoma and Sudbury districts, the highway extends for from a junction with Highway 17 in Thessalon to the town of Chapleau, just north of Highway 101...

north of the mouth of the Rapid River, parallels the majority of the river to Seymour Lake