Cours d'eau Léo-Dumais is a River located in Sayabec; La Matapédia, Quebec.

• Latitude: 48° 33' 1'' North   (decimal: 48.5503215)
• Longitude: 67° 41' 28'' West   (decimal: -67.6911123)
• Topography Feature Category: River
• Geographical Feature: Cours d'eau agricole
• Canadian Province/Territory: Quebec
• Location: Sayabec; La Matapédia
• Atlas of Canada Locator Map: Cours d'eau Léo-Dumais
• GPS Coordinate Locator Map: Cours d'eau Léo-Dumais Lat/Long