Lac Perdu is a Lake located in Rivière-Mistassini; Maria-Chapdelaine, Quebec and has an elevation of 326 meters.

• Latitude: 49° 10' 15'' North   (decimal: 49.1708333)
• Longitude: 72° 55' 8'' West   (decimal: -72.9188889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 326 meters
• Location: Rivière-Mistassini; Maria-Chapdelaine
• Atlas of Canada Locator Map: Lac Perdu
• GPS Coordinate Locator Map: Lac Perdu Lat/Long