Lac Dé is a Lake located in Lac-Pythonga; La Vallée-de-la-Gatineau, Quebec and has an elevation of 414 meters.

• Latitude: 47° 13' 25'' North   (decimal: 47.2236111)
• Longitude: 76° 9' 50'' West   (decimal: -76.1638889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 414 meters
• Location: Lac-Pythonga; La Vallée-de-la-Gatineau
• Atlas of Canada Locator Map: Lac Dé
• GPS Coordinate Locator Map: Lac Dé Lat/Long