Lac Gagnon is a Lake located in Doncaster; Les Laurentides, Quebec and has an elevation of 543 meters.

• Latitude: 46° 8' 59'' North   (decimal: 46.1497222)
• Longitude: 74° 4' 29'' West   (decimal: -74.0747222)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 543 meters
• Location: Doncaster; Les Laurentides
• Atlas of Canada Locator Map: Lac Gagnon
• GPS Coordinate Locator Map: Lac Gagnon Lat/Long