Lac Gaston is a Lake located in Mont-Valin; Le Fjord-du-Saguenay, Quebec and has an elevation of 442 meters.

• Latitude: 48° 54' 19'' North   (decimal: 48.9052778)
• Longitude: 71° 15' 3'' West   (decimal: -71.2508333)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 442 meters
• Location: Mont-Valin; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac Gaston
• GPS Coordinate Locator Map: Lac Gaston Lat/Long