Décharge des Dix-Huit is a River located in Saint-Alexandre; Le Haut-Richelieu, Quebec and has an elevation of 57 meters.

• Latitude: 45° 12' 59'' North   (decimal: 45.2164296)
• Longitude: 73° 6' 19'' West   (decimal: -73.1054069)
• Topography Feature Category: River
• Geographical Feature: Ruisseau
• Canadian Province/Territory: Quebec
• Elevation: 57 meters
• Location: Saint-Alexandre; Le Haut-Richelieu
• Atlas of Canada Locator Map: Décharge des Dix-Huit
• GPS Coordinate Locator Map: Décharge des Dix-Huit Lat/Long