Rivière Dumais is a River located in Lac-Walker; Sept-Rivières, Quebec and has an elevation of 150 meters.

• Latitude: 50° 34' 50'' North   (decimal: 50.5805931)
• Longitude: 66° 36' 33'' West   (decimal: -66.6090811)
• Topography Feature Category: River
• Geographical Feature: Rivière
• Canadian Province/Territory: Quebec
• Elevation: 150 meters
• Location: Lac-Walker; Sept-Rivières
• Atlas of Canada Locator Map: Rivière Dumais
• GPS Coordinate Locator Map: Rivière Dumais Lat/Long