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

• Latitude: 49° 12' 20'' North   (decimal: 49.2055957)
• Longitude: 70° 47' 23'' West   (decimal: -70.7897925)
• 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 Trou
• GPS Coordinate Locator Map: Lac du Trou Lat/Long