Lac Demers is a Lake located in Mont-Valin; Le Fjord-du-Saguenay, Quebec and has an elevation of 743 meters.

• Latitude: 48° 34' 25'' North   (decimal: 48.5736111)
• Longitude: 70° 39' 45'' West   (decimal: -70.6625)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 743 meters
• Location: Mont-Valin; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac Demers
• GPS Coordinate Locator Map: Lac Demers Lat/Long