Lac Dernier is a Lake located in Lalemant; Le Fjord-du-Saguenay, Quebec.

• Latitude: 48° 2' 21'' North   (decimal: 48.0391667)
• Longitude: 70° 32' 50'' West   (decimal: -70.5472222)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lalemant; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac Dernier
• GPS Coordinate Locator Map: Lac Dernier Lat/Long