Rivière des Gagnon is a River located in L'Islet; L'Islet, Quebec.

• Latitude: 47° 3' 30'' North   (decimal: 47.0583558)
• Longitude: 70° 21' 17'' West   (decimal: -70.3547943)
• Topography Feature Category: River
• Geographical Feature: Ruisseau
• Canadian Province/Territory: Quebec
• Location: L'Islet; L'Islet
• Atlas of Canada Locator Map: Rivière des Gagnon
• GPS Coordinate Locator Map: Rivière des Gagnon Lat/Long