Lac Blackburn is a Lake located in Mont-Valin; Le Fjord-du-Saguenay, Quebec and has an elevation of 683 meters.

• Latitude: 48° 32' 56'' North   (decimal: 48.5489186)
• Longitude: 70° 9' 43'' West   (decimal: -70.1620072)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 683 meters
• Location: Mont-Valin; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac Blackburn
• GPS Coordinate Locator Map: Lac Blackburn Lat/Long