Lac des Troncs is a Lake located in Rivière-aux-Outardes; Manicouagan, Quebec.

• Latitude: 49° 41' 36'' North   (decimal: 49.6933333)
• Longitude: 68° 27' 34'' West   (decimal: -68.4594444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-aux-Outardes; Manicouagan
• Atlas of Canada Locator Map: Lac des Troncs
• GPS Coordinate Locator Map: Lac des Troncs Lat/Long