Lac Tranquille is a Lake located in Mont-Valin; Le Fjord-du-Saguenay, Quebec and has an elevation of 747 meters.

• Latitude: 48° 41' 6'' North   (decimal: 48.685)
• Longitude: 70° 31' 1'' West   (decimal: -70.5169444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 747 meters
• Location: Mont-Valin; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac Tranquille
• GPS Coordinate Locator Map: Lac Tranquille Lat/Long