Lac Desfonds is a Lake located in Lac-Ernest; Antoine-Labelle, Quebec and has an elevation of 260 meters.

• Latitude: 46° 13' 18'' North   (decimal: 46.2217148)
• Longitude: 75° 3' 23'' West   (decimal: -75.0563070)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 260 meters
• Location: Lac-Ernest; Antoine-Labelle
• Atlas of Canada Locator Map: Lac Desfonds
• GPS Coordinate Locator Map: Lac Desfonds Lat/Long