Lac de la Grande Décharge is a Lake located in Baie-Trinité; Manicouagan, Quebec and has an elevation of 247 meters.

• Latitude: 49° 33' 10'' North   (decimal: 49.5528239)
• Longitude: 67° 25' 37'' West   (decimal: -67.4269380)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 247 meters
• Location: Baie-Trinité; Manicouagan
• Atlas of Canada Locator Map: Lac de la Grande Décharge
• GPS Coordinate Locator Map: Lac de la Grande Décharge Lat/Long