Lac Affreux is a Lake located in Senneterre; Vallée-de-l'Or, Quebec.

• Latitude: 47° 58' 11'' North   (decimal: 47.9697222)
• Longitude: 76° 22' 37'' West   (decimal: -76.3769444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Senneterre; Vallée-de-l'Or
• Atlas of Canada Locator Map: Lac Affreux
• GPS Coordinate Locator Map: Lac Affreux Lat/Long