Lac des Joncs is a Lake located in Les Hauteurs; La Mitis, Quebec and has an elevation of 350 meters.

• Latitude: 48° 21' 34'' North   (decimal: 48.3594863)
• Longitude: 68° 9' 12'' West   (decimal: -68.1533485)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 350 meters
• Location: Les Hauteurs; La Mitis
• Atlas of Canada Locator Map: Lac des Joncs
• GPS Coordinate Locator Map: Lac des Joncs Lat/Long