Lac des Prairies is a Lake located in Saint-Mathieu-de-Rioux; Les Basques, Quebec and has an elevation of 308 meters.

• Latitude: 48° 10' 5'' North   (decimal: 48.1680830)
• Longitude: 68° 54' 38'' West   (decimal: -68.9105859)
• Topography Feature Category: Lake
• Geographical Feature: Étang
• Canadian Province/Territory: Quebec
• Elevation: 308 meters
• Location: Saint-Mathieu-de-Rioux; Les Basques
• Atlas of Canada Locator Map: Lac des Prairies
• GPS Coordinate Locator Map: Lac des Prairies Lat/Long