Lac du Fossé is a Lake located in Lac-au-Brochet; La Haute-Côte-Nord, Quebec.

• Latitude: 49° 5' 24'' North   (decimal: 49.0900406)
• Longitude: 69° 14' 41'' West   (decimal: -69.2447781)
• Topography Feature Category: Lake
• Geographical Feature: Étang
• Canadian Province/Territory: Quebec
• Location: Lac-au-Brochet; La Haute-Côte-Nord
• Atlas of Canada Locator Map: Lac du Fossé
• GPS Coordinate Locator Map: Lac du Fossé Lat/Long