Lac du Branchu is a Lake located in Mont-Valin; Le Fjord-du-Saguenay, Quebec.

• Latitude: 48° 54' 50'' North   (decimal: 48.9139302)
• Longitude: 70° 57' 43'' West   (decimal: -70.9620222)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Mont-Valin; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac du Branchu
• GPS Coordinate Locator Map: Lac du Branchu Lat/Long