| Blanche River | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Name3: | Chaudière-Appalaches |
| Subdivision Type4: | MRC |
| Subdivision Name4: | Les Appalaches Regional County Municipality |
| Length: | 12.2km (07.6miles) |
| Source1: | Forest streams |
| Source1 Location: | Saint-Jacques-le-Majeur-de-Wolfestown |
| Source1 Coordinates: | 45.9015°N -71.5077°W |
| Source1 Elevation: | 386m (1,266feet) |
| Mouth: | Rivière au Pin |
| Mouth Location: | Saint-Julien |
| Mouth Coordinates: | 45.9964°N -71.4617°W |
| Mouth Elevation: | 219m (719feet) |
| Progression: | Rivière au Pin, Bécancour River, St. Lawrence River |
| Tributaries Left: | (upstream) ruisseau Lacroix, ruisseau Grimard. |
| Tributaries Right: | (upstream) ruisseau Croteau. |
| Country: |  Canada |
The Blanche River (in French: rivière Blanche) is a tributary of the rivière au Pin which is a tributary of the Bécancour River; the latter flows onto the south shore of the St. Lawrence River.
The Blanche River flows through the municipalities of Saint-Jacques-le-Majeur-de-Wolfestown and Saint-Julien, in the Les Appalaches Regional County Municipality (MRC), in the administrative region of Chaudière-Appalaches, in province of Quebec, in Canada.
The main neighboring watersheds of the Blanche river are:
The Blanche River originates in the mountains on the north shore of Lake Breeches, in the municipality of Saint-Jacques-le-Majeur-de-Wolfestown. This head area is located southeast of the “Chalet Hill” (altitude:), at southeast of the village of Saint-Jacques-le-Majeur-de-Wolfestown and northeast of Breeches Lake.
From its head area, the Blanche river flows over divided into the following segments:
The Blanche River empties on the west bank of the rivière au Pin. This confluence is located east of the village of Saint-Julien, west of Mont Caribou and downstream of the boundary between Irlande) and Saint-Julien.
The toponym “rivière Blanche” was made official on August 7, 1978, at the Commission de toponymie du Québec.[2]