The St. Mary River (sometimes represented as the St. Mary's River) is a river in the

East Kootenay The Regional District of East Kootenay (RDEK) is a regional district in the provinces and territories of Canada, Canadian province of British Columbia, Canada. In the 2016 census, the population was 60,439. Its area is . The regional district ...

region of

British Columbia British Columbia (commonly abbreviated as BC) is the westernmost province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, ...

. It rises in the

Purcell Mountains The Purcell Mountains are a mountain range in southeastern British Columbia, Canada. They are a subrange of the Columbia Mountains, which includes the Selkirk, Monashee, and Cariboo Mountains. They are located on the west side of the Rocky Mounta ...

and flows in a generally southeasterly direction to its confluence with the

Kootenay River The Kootenay or Kootenai river is a major river in the Northwest Plateau, in southeastern British Columbia, Canada, and northern Montana and Idaho in the United States. It is one of the uppermost major tributaries of the Columbia River, the l ...

Fort Steele, British Columbia Fort Steele is a heritage site in the East Kootenay region of southeastern British Columbia. This visitor attraction lies on the east shore of the Kootenay River between the mouths of the St. Mary River and Wild Horse River. The locality, on the m ...

References

Rivers of British Columbia East Kootenay Tributaries of the Kootenay River Kootenay Land District {{BritishColumbiaInterior-river-stub