Lac des Nappes is a Lake located in Rivière-Mistassini; Maria-Chapdelaine, Quebec.

• Latitude: 49° 27' 0'' North   (decimal: 49.4500487)
• Longitude: 72° 5' 38'' West   (decimal: -72.0939203)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Mistassini; Maria-Chapdelaine
• Atlas of Canada Locator Map: Lac des Nappes
• GPS Coordinate Locator Map: Lac des Nappes Lat/Long