It flows in the unorganized territory of Lac-Jacques-Cartier, in the La Côte-de-Beaupré Regional County Municipality, in the administrative region of Capitale-Nationale, in the province of Quebec, in Canada.

Forestry is the main economic activity in this valley; second, recreational tourism.

Because of its altitude, the surface of the upper part of the Blanche River is generally frozen from the end of November to the beginning of April; however, safe circulation on the ice is generally done from mid-December to the end of March.

The water level of the river varies with the seasons and the precipitation; the spring flood occurs in March or April.

The toponym "rivière Blanche" was formalized on March 28, 1974 at the Commission de toponymie du Québec.