Lac Perdu is a Lake located in Mont-Carmel; Kamouraska, Quebec and has an elevation of 487 meters.

• Latitude: 47° 13' 59'' North   (decimal: 47.2330555)
• Longitude: 69° 40' 23'' West   (decimal: -69.6730555)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 487 meters
• Location: Mont-Carmel; Kamouraska
• Atlas of Canada Locator Map: Lac Perdu
• GPS Coordinate Locator Map: Lac Perdu Lat/Long