Rivière Inconnue is a River located in Notre-Dame-du-Rosaire; Montmagny, Quebec and has an elevation of 371 meters.

• Latitude: 46° 54' 8'' North   (decimal: 46.9022443)
• Longitude: 70° 22' 33'' West   (decimal: -70.3759046)
• Topography Feature Category: River
• Geographical Feature: Rivière
• Canadian Province/Territory: Quebec
• Elevation: 371 meters
• Location: Notre-Dame-du-Rosaire; Montmagny
• Atlas of Canada Locator Map: Rivière Inconnue
• GPS Coordinate Locator Map: Rivière Inconnue Lat/Long