Lac du Grand Portage is a Lake located in Lac-au-Brochet; La Haute-Côte-Nord, Quebec and has an elevation of 407 meters.

• Latitude: 49° 7' 36'' North   (decimal: 49.1266667)
• Longitude: 69° 50' 16'' West   (decimal: -69.8377778)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 407 meters
• Location: Lac-au-Brochet; La Haute-Côte-Nord
• Atlas of Canada Locator Map: Lac du Grand Portage
• GPS Coordinate Locator Map: Lac du Grand Portage Lat/Long