Lac de l'Éperon is a Lake located in Mont-Valin; Le Fjord-du-Saguenay, Quebec.

• Latitude: 48° 45' 9'' North   (decimal: 48.7525)
• Longitude: 70° 18' 27'' West   (decimal: -70.3075)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Mont-Valin; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac de l'Éperon
• GPS Coordinate Locator Map: Lac de l'Éperon Lat/Long