Lac Perdu is a Lake located in Mont-Valin; Le Fjord-du-Saguenay, Quebec and has an elevation of 597 meters.

• Latitude: 48° 53' 9'' North   (decimal: 48.8858333)
• Longitude: 70° 13' 11'' West   (decimal: -70.2197222)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 597 meters
• Location: Mont-Valin; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac Perdu
• GPS Coordinate Locator Map: Lac Perdu Lat/Long