Lac Duck is a Lake located in Rivière-Mouchalagane; Caniapiscau, Quebec and has an elevation of 667 meters.

• Latitude: 52° 33' 4'' North   (decimal: 52.5511855)
• Longitude: 67° 20' 3'' West   (decimal: -67.3340925)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 667 meters
• Location: Rivière-Mouchalagane; Caniapiscau
• Atlas of Canada Locator Map: Lac Duck
• GPS Coordinate Locator Map: Lac Duck Lat/Long