The Bush River is a tributary of the Columbia River

Columbia River

The Columbia River is the largest river in the Pacific Northwest region of North America. The river rises in the Rocky Mountains of British Columbia, Canada, flows northwest and then south into the U.S. state of Washington, then turns west to form most of the border between Washington and the state...

 in the Columbia Country

Columbia Country

The Columbia Country is a term used in the Canadian province of British Columbia to refer to the upper basin of the Columbia River in that province. It includes a smaller region known as the Columbia Valley, near the river's headwaters at Columbia Lake in the Rocky Mountain Trench, and the Big...

 of southeastern British Columbia

British Columbia

British Columbia is the westernmost of Canada's provinces and is known for its natural beauty, as reflected in its Latin motto, Splendor sine occasu . Its name was chosen by Queen Victoria in 1858...

, 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...

, entering that river via the Bush Arm of Kinbasket Lake

Kinbasket Lake

Kinbasket Lake is a reservoir on the Columbia River in southeast British Columbia, north of the city of Revelstoke and the town of Golden. The reservoir was created by the construction of the Mica Dam. The lake includes two reaches, Columbia Reach and Canoe Reach , referring to the river valleys...

. Named for the dense vegetation lining its banks, its headwaters are at 52°05′N 117°30′W, in the Rocky Mountains

Canadian Rockies

The Canadian Rockies comprise the Canadian segment of the North American Rocky Mountains range. They are the eastern part of the Canadian Cordillera, extending from the Interior Plains of Alberta to the Rocky Mountain Trench of British Columbia. The southern end borders Idaho and Montana of the USA...

. Its former confluence with the Columbia was at 51°44′30"N 117°38′10"W, now beneath the waters of Bush Arm; a few miles above the river's new mouth is the confluence of the Valenciennes River

Valenciennes River

The Valenciennes River is a tributary of the Bush River, entering that river just above its mouth into Kinbasket Lake, the reservoir on the Columbia River created by the Mica Dam in southeastern British Columbia, Canada. The Valenciennes was originally known as the South Fork Bush River....

. The Bush has also been designated the North Fork Bush River, while the Valenciennes was known as the South Fork Bush River (renamed in 1918); — Bush Pass

Bush Pass

Bush Pass is a mountain pass in the Canadian Rockies, on the border between the Canadian provinces of Alberta and British Columbia. it is located at the headwaters of the Valenciennes River, formerly known as the South Fork Bush River; the North Fork Bush River is now known as the Bush...

is at the head of the Valenciennes, rather than the Bush.