Lac à Guillaume is a Lake located in Lac-au-Brochet; La Haute-Côte-Nord, Quebec and has an elevation of 186 meters.

• Latitude: 48° 51' 32'' North   (decimal: 48.8589199)
• Longitude: 69° 13' 5'' West   (decimal: -69.2181075)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 186 meters
• Location: Lac-au-Brochet; La Haute-Côte-Nord
• GPS Coordinate Locator Map: Lac à Guillaume Lat/Long