Lac des Joncs is a Lake located in Piopolis; Le Granit, Quebec and has an elevation of 396 meters.

• Latitude: 45° 26' 59'' North   (decimal: 45.4497651)
• Longitude: 70° 51' 13'' West   (decimal: -70.8536816)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 396 meters
• Location: Piopolis; Le Granit
• Atlas of Canada Locator Map: Lac des Joncs
• GPS Coordinate Locator Map: Lac des Joncs Lat/Long