Grand lac aux Montagnais is a Lake located in Lac-Pikauba; Charlevoix, Quebec and has an elevation of 793 meters.

• Latitude: 47° 55' 1'' North   (decimal: 47.9169444)
• Longitude: 71° 11' 44'' West   (decimal: -71.1955556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 793 meters
• Location: Lac-Pikauba; Charlevoix
• Atlas of Canada Locator Map: Grand lac aux Montagnais
• GPS Coordinate Locator Map: Grand lac aux Montagnais Lat/Long