Lac de la Grosse Île is a Lake located in Baie-James; Jamésie, Quebec and has an elevation of 374 meters.

• Latitude: 49° 34' 43'' North   (decimal: 49.5786111)
• Longitude: 77° 0' 55'' West   (decimal: -77.0152778)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 374 meters
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac de la Grosse Île
• GPS Coordinate Locator Map: Lac de la Grosse Île Lat/Long