Lac Vadenais is a Lake located in Baie-James; Jamésie, Quebec and has an elevation of 244 meters.

• Latitude: 50° 50' 50'' North   (decimal: 50.8472222)
• Longitude: 77° 47' 5'' West   (decimal: -77.7847222)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 244 meters
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Vadenais
• GPS Coordinate Locator Map: Lac Vadenais Lat/Long