Lac Perdu is a Lake located in Mont-Valin; Le Fjord-du-Saguenay, Quebec and has an elevation of 740 meters.

• Latitude: 48° 38' 42'' North   (decimal: 48.645)
• Longitude: 70° 32' 35'' West   (decimal: -70.5430556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 740 meters
• Location: Mont-Valin; Le Fjord-du-Saguenay
• GPS Coordinate Locator Map: Lac Perdu Lat/Long