La Grande Décharge is a Lake located in Alma; Lac-Saint-Jean-Est, Quebec.

• Latitude: 48° 36' 52'' North   (decimal: 48.6144444)
• Longitude: 71° 41' 38'' West   (decimal: -71.6938889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Alma; Lac-Saint-Jean-Est
• Atlas of Canada Locator Map: La Grande Décharge
• GPS Coordinate Locator Map: La Grande Décharge Lat/Long