Lac à Thomas is a Lake located in Franquelin; Manicouagan, Quebec and has an elevation of 161 meters.

• Latitude: 49° 18' 10'' North   (decimal: 49.3028239)
• Longitude: 67° 53' 35'' West   (decimal: -67.8930706)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 161 meters
• Location: Franquelin; Manicouagan
• Atlas of Canada Locator Map: Lac à Thomas
• GPS Coordinate Locator Map: Lac à Thomas Lat/Long