Décharge des Trente is a River located in Saint-Jean-sur-Richelieu; Le Haut-Richelieu, Quebec and has an elevation of 29 meters.

• Latitude: 45° 22' 27'' North   (decimal: 45.3742065)
• Longitude: 73° 17' 51'' West   (decimal: -73.2976344)
• Topography Feature Category: River
• Geographical Feature: Ruisseau
• Canadian Province/Territory: Quebec
• Elevation: 29 meters
• Location: Saint-Jean-sur-Richelieu; Le Haut-Richelieu
• Atlas of Canada Locator Map: Décharge des Trente
• GPS Coordinate Locator Map: Décharge des Trente Lat/Long