St. Mary River (British Columbia)

St. Mary River
Location
Country	Canada
Province	British Columbia
District	Kootenay Land District
Physical characteristics
Source	Purcell Wilderness Conservancy
• location	Purcell Mountains
• coordinates	49°55′N 116°34′W
Mouth	Kootenay River
• location	Fort Steele
• coordinates	49°37′N 115°39′W

The St. Mary River (sometimes represented as the St. Mary's River) is a river in the East Kootenay region of British Columbia. It rises in the Purcell Mountains and flows in a generally southeasterly direction to its confluence with the Kootenay River at Fort Steele, British Columbia.