Cours d'eau Richard-Gagnon is a River located in Saint-Roch-des-Aulnaies; L'Islet, Quebec.

• Latitude: 47° 16' 55'' North   (decimal: 47.2819676)
• Longitude: 70° 9' 15'' West   (decimal: -70.1542331)
• Topography Feature Category: River
• Geographical Feature: Cours d'eau agricole
• Canadian Province/Territory: Quebec
• Location: Saint-Roch-des-Aulnaies; L'Islet
• Atlas of Canada Locator Map: Cours d'eau Richard-Gagnon
• GPS Coordinate Locator Map: Cours d'eau Richard-Gagnon Lat/Long