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

• Latitude: 48° 54' 25'' North   (decimal: 48.9069852)
• Longitude: 70° 52' 28'' West   (decimal: -70.8745206)
• 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 Méfait
• GPS Coordinate Locator Map: Lac du Méfait Lat/Long