Lac Saint-Julien is a Lake located in Rivière-Mouchalagane; Caniapiscau, Quebec and has an elevation of 617 meters.

• Latitude: 52° 38' 18'' North   (decimal: 52.6383333)
• Longitude: 68° 26' 57'' West   (decimal: -68.4491666)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 617 meters
• Location: Rivière-Mouchalagane; Caniapiscau
• Atlas of Canada Locator Map: Lac Saint-Julien
• GPS Coordinate Locator Map: Lac Saint-Julien Lat/Long