Grand lac Profond is a Lake located in Lac-Pikauba; Charlevoix, Quebec.

• Latitude: 47° 49' 56'' North   (decimal: 47.8322222)
• Longitude: 70° 33' 13'' West   (decimal: -70.5536111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Pikauba; Charlevoix
• Atlas of Canada Locator Map: Grand lac Profond
• GPS Coordinate Locator Map: Grand lac Profond Lat/Long