Grand lac Cécile is a Lake located in Mont-Valin; Le Fjord-du-Saguenay, Quebec.

• Latitude: 49° 12' 45'' North   (decimal: 49.2125399)
• Longitude: 70° 44' 58'' West   (decimal: -70.7495142)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Mont-Valin; Le Fjord-du-Saguenay
• GPS Coordinate Locator Map: Grand lac Cécile Lat/Long