| Leblanc | |
| Map: | Gouin_Reservoir_74.72W_48.61.jpg |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Name3: | Mauricie |
| Length: | 32.8km (20.4miles)[1] |
| Source1: | Machinila Lake |
| Source1 Location: | La Tuque, Mauricie, Quebec |
| Source1 Coordinates: | 48.1356°N -74.4267°W |
| Source1 Elevation: | 435m (1,427feet) |
| Mouth: | Gouin Reservoir |
| Mouth Location: | La Tuque, Mauricie, Quebec |
| Mouth Coordinates: | 48.3036°N -74.4417°W |
| Mouth Elevation: | 402m (1,319feet) |
The Leblanc River is a tributary of the De La Galette River, flowing on the south shore of the Gouin Reservoir, in the territory of the town of La Tuque, in the Mauricie administrative region, in Quebec, in Canada.
The Leblanc River runs successively in the Decelles and Leblanc townships, south of the Gouin Reservoir and on the west side of the upper Saint-Maurice River. Forestry is the main economic activity of this valley; recreational tourism activities, second.
The route 400, connecting Gouin Dam to the village of Parent, Quebec, serves the Leblanc River Valley; this road also serves the peninsula which stretches north in the Gouin Reservoir on . Some secondary forest roads are in use nearby for forestry and recreational tourism activities.
The surface of the Leblanc River is usually frozen from mid-November to the end of April, however, safe ice circulation is generally from early December to late March.
The term "Leblanc" is a family name of French origin.
The toponym "Leblanc River" was formalized on August 17, 1978 at the Commission de toponymie du Quebec.[2]