Lac à Roches is a Lake located in Mont-Valin; Le Fjord-du-Saguenay, Quebec.

• Latitude: 50° 13' 40'' North   (decimal: 50.2278441)
• Longitude: 70° 31' 58'' West   (decimal: -70.5328900)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Mont-Valin; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac à Roches
• GPS Coordinate Locator Map: Lac à Roches Lat/Long