The Blanche river (, , ) is a tributary of the Bourbon River which flows into the Bécancour River.
The Blanche river flows in the municipalities of Saint-Pierre-Baptiste, Laurierville (Sainte-Julie sector) and Plessisville, in the L'ÃÂrable Regional County Municipality (MRC), in the administrative region of Centre-du-Québec, in province of Quebec, in Canada.
The main neighboring hydrographic slopes of the Blanche River are:
The Blanche River has its source at Lac Camille (length: ; altitude: ), located in Saint-Pierre-Baptiste. This lake is located south of the village of Laurierville and east of downtown Plessisville.
From its source, the Blanche River flows on in the following segments:
The Blanche river empties on the south-eastern bank of the Bourbon River downstream of the "Savane stream", south of the village of Plessisville.
The toponym "rivière Blanche" was made official on March 6, 1970, at the Commission de toponymie du Québec.