Lac Gaston is a Lake located in Lac-Matawin; Matawinie, Quebec and has an elevation of 470 meters.

• Latitude: 46° 43' 11'' North   (decimal: 46.7197630)
• Longitude: 74° 8' 1'' West   (decimal: -74.1334890)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 470 meters
• Location: Lac-Matawin; Matawinie
• Atlas of Canada Locator Map: Lac Gaston
• GPS Coordinate Locator Map: Lac Gaston Lat/Long