Lac Masse is a Lake located in Lac-Ashuapmushuan; Le Domaine-du-Roy, Quebec and has an elevation of 556 meters.

• Latitude: 48° 49' 50'' North   (decimal: 48.8305556)
• Longitude: 74° 2' 19'' West   (decimal: -74.0386111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 556 meters
• Location: Lac-Ashuapmushuan; Le Domaine-du-Roy
• Atlas of Canada Locator Map: Lac Masse
• GPS Coordinate Locator Map: Lac Masse Lat/Long