Lac Perdu is a Lake located in Rivière-Mistassini; Maria-Chapdelaine, Quebec and has an elevation of 357 meters.

• Latitude: 49° 30' 4'' North   (decimal: 49.5011111)
• Longitude: 72° 47' 7'' West   (decimal: -72.7852778)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 357 meters
• Location: Rivière-Mistassini; Maria-Chapdelaine
• Atlas of Canada Locator Map: Lac Perdu
• GPS Coordinate Locator Map: Lac Perdu Lat/Long