Décharge de l'Île Saint-Jean is a River located in Saint-François-du-Lac; Nicolet-Yamaska, Quebec.

• Latitude: 46° 5' 57'' North   (decimal: 46.0991962)
• Longitude: 72° 55' 12'' West   (decimal: -72.9201230)
• Topography Feature Category: River
• Geographical Feature: Ruisseau
• Canadian Province/Territory: Quebec
• Location: Saint-François-du-Lac; Nicolet-Yamaska
• Atlas of Canada Locator Map: Décharge de l'Île Saint-Jean
• GPS Coordinate Locator Map: Décharge de l'Île Saint-Jean Lat/Long