Lac Perdu is a Lake located in Saint-Pierre-de-Lamy; Témiscouata, Quebec.

• Latitude: 47° 47' 5'' North   (decimal: 47.7847000)
• Longitude: 69° 2' 7'' West   (decimal: -69.0352999)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Saint-Pierre-de-Lamy; Témiscouata
• GPS Coordinate Locator Map: Lac Perdu Lat/Long