The Black Sturgeon River is a river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 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...

 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 Kenora District

Kenora District, Ontario

Kenora District is a district and census division in Northwestern Ontario, Canada. It was created in 1907 from parts of Rainy River District. It is, geographically, the largest division in that province; at 407,192.66 km2 it comprises almost 38 percent of the province's land area...

, northwestern

Northwestern Ontario

Northwestern Ontario is the region within the Canadian province of Ontario which lies north and west of Lake Superior, and west of Hudson Bay and James Bay. It includes most of subarctic Ontario. Its western boundary is the Canadian province of Manitoba, which disputed Ontario's claim to the...

 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 a tributary of 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...

.

Course

The river begins at Silver Lake, and exits at the west at Crystal Bay. It flows west into the Northeast Bay of Black Sturgeon Lakes, then through the Grassy Narrows to the main part of the lake, where it takes in the left tributary Little Black Sturgeon River. The river heads into the city of Kenora and through a narrows past the communities of Lajeunesse Bridge and Pelletier Bridge, and turns north through another arm of Black Sturgeon Lakes. The river is crossed at the north end of the lake by Ontario Highway 658, where it exits the city of Kenora, then tumbles over Black Sturgeon Rapids to reach its mouth at the Winnipeg River.