Lac Gay is a Lake located in Baie-James; Jamésie, Quebec and has an elevation of 248 meters.

• Latitude: 50° 8' 8'' North   (decimal: 50.1355556)
• Longitude: 78° 49' 5'' West   (decimal: -78.8180556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 248 meters
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Gay
• GPS Coordinate Locator Map: Lac Gay Lat/Long