Lac Tétreault is a Lake located in Mont-Valin; Le Fjord-du-Saguenay, Quebec.

• Latitude: 48° 52' 6'' North   (decimal: 48.8683333)
• Longitude: 70° 50' 11'' West   (decimal: -70.8363889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Mont-Valin; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac Tétreault
• GPS Coordinate Locator Map: Lac Tétreault Lat/Long