Lac Arthur is a Lake located in Rivière-Mistassini; Maria-Chapdelaine, Quebec and has an elevation of 326 meters.

• Latitude: 49° 21' 49'' North   (decimal: 49.3636111)
• Longitude: 72° 22' 53'' West   (decimal: -72.3813889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 326 meters
• Location: Rivière-Mistassini; Maria-Chapdelaine
• Atlas of Canada Locator Map: Lac Arthur
• GPS Coordinate Locator Map: Lac Arthur Lat/Long