Lac à Gaston is a Lake located in Lac-Oscar; Antoine-Labelle, Quebec.

• Latitude: 47° 15' 20'' North   (decimal: 47.2556175)
• Longitude: 75° 18' 41'' West   (decimal: -75.3112886)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Oscar; Antoine-Labelle
• Atlas of Canada Locator Map: Lac à Gaston
• GPS Coordinate Locator Map: Lac à Gaston Lat/Long