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

• Latitude: 49° 42' 18'' North   (decimal: 49.705)
• Longitude: 68° 26' 54'' West   (decimal: -68.4483333)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-aux-Outardes; Manicouagan
• Atlas of Canada Locator Map: Lac des Castors
• GPS Coordinate Locator Map: Lac des Castors Lat/Long