Les Grands Bassins is a Bay located in Petite-Rivière-Saint-François; Charlevoix, Quebec.

• Latitude: 47° 20' 28'' North   (decimal: 47.3411323)
• Longitude: 70° 33' 4'' West   (decimal: -70.5511917)
• Topography Feature Category: Bay
• Geographical Feature: Bassins
• Canadian Province/Territory: Quebec
• Location: Petite-Rivière-Saint-François; Charlevoix
• Atlas of Canada Locator Map: Les Grands Bassins
• GPS Coordinate Locator Map: Les Grands Bassins Lat/Long