Lac du Tunnel is a Lake located in Rivière-Mistassini; Maria-Chapdelaine, Quebec and has an elevation of 445 meters.

• Latitude: 49° 42' 51'' North   (decimal: 49.7141667)
• Longitude: 72° 16' 56'' West   (decimal: -72.2822222)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 445 meters
• Location: Rivière-Mistassini; Maria-Chapdelaine
• Atlas of Canada Locator Map: Lac du Tunnel
• GPS Coordinate Locator Map: Lac du Tunnel Lat/Long