Lac Descoteaux is a Lake located in Sainte-Sophie; La Rivière-du-Nord, Quebec.

• Latitude: 45° 50' 51'' North   (decimal: 45.8474999)
• Longitude: 73° 58' 7'' West   (decimal: -73.9686111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Sainte-Sophie; La Rivière-du-Nord
• Atlas of Canada Locator Map: Lac Descoteaux
• GPS Coordinate Locator Map: Lac Descoteaux Lat/Long