Le Grand Reef is a Shoal located in Havre-Saint-Pierre; Minganie, Quebec.

• Latitude: 50° 11' 32'' North   (decimal: 50.1922221)
• Longitude: 63° 44' 47'' West   (decimal: -63.7463889)
• Topography Feature Category: Shoal
• Geographical Feature: Récifs
• Canadian Province/Territory: Quebec
• Location: Havre-Saint-Pierre; Minganie
• Atlas of Canada Locator Map: Le Grand Reef
• GPS Coordinate Locator Map: Le Grand Reef Lat/Long