Lac Marc is a Lake located in Mont-Valin; Le Fjord-du-Saguenay, Quebec and has an elevation of 731 meters.

• Latitude: 48° 52' 50'' North   (decimal: 48.8805958)
• Longitude: 70° 48' 43'' West   (decimal: -70.8120194)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 731 meters
• Location: Mont-Valin; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac Marc
• GPS Coordinate Locator Map: Lac Marc Lat/Long