Lac Mercury is a Lake located in Lac-Douaire; Antoine-Labelle, Quebec and has an elevation of 343 meters.

• Latitude: 47° 11' 50'' North   (decimal: 47.1972222)
• Longitude: 75° 51' 30'' West   (decimal: -75.8583333)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 343 meters
• Location: Lac-Douaire; Antoine-Labelle
• Atlas of Canada Locator Map: Lac Mercury
• GPS Coordinate Locator Map: Lac Mercury Lat/Long