Lac La Cosa is a Lake located in Lac-Vacher; Caniapiscau, Quebec and has an elevation of 487 meters.

• Latitude: 54° 52' 16'' North   (decimal: 54.8712255)
• Longitude: 66° 55' 4'' West   (decimal: -66.9178739)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 487 meters
• Location: Lac-Vacher; Caniapiscau
• Atlas of Canada Locator Map: Lac La Cosa
• GPS Coordinate Locator Map: Lac La Cosa Lat/Long