Lac des Roches is a Lake located in Rivière-Mistassini; Maria-Chapdelaine, Quebec and has an elevation of 356 meters.

• Latitude: 49° 12' 49'' North   (decimal: 49.2136111)
• Longitude: 72° 57' 58'' West   (decimal: -72.9661111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 356 meters
• Location: Rivière-Mistassini; Maria-Chapdelaine
• Atlas of Canada Locator Map: Lac des Roches
• GPS Coordinate Locator Map: Lac des Roches Lat/Long