Lac Authier is a Lake located in Lac-Chicobi; Abitibi, Quebec and has an elevation of 321 meters.

• Latitude: 48° 57' 58'' North   (decimal: 48.9661110)
• Longitude: 78° 35' 13'' West   (decimal: -78.5869444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 321 meters
• Location: Lac-Chicobi; Abitibi
• Atlas of Canada Locator Map: Lac Authier
• GPS Coordinate Locator Map: Lac Authier Lat/Long