Lac Dumais is a Low vegetation located in Lorrainville; Témiscamingue, Quebec.

• Latitude: 47° 21' 3'' North   (decimal: 47.3508333)
• Longitude: 79° 23' 38'' West   (decimal: -79.3938889)
• Topography Feature Category: Low vegetation
• Geographical Feature: Marais
• Canadian Province/Territory: Quebec
• Location: Lorrainville; Témiscamingue
• GPS Coordinate Locator Map: Lac Dumais Lat/Long