Lac Sylvio is a Lake located in Baie-James; Jamésie, Quebec and has an elevation of 447 meters.

• Latitude: 51° 24' 39'' North   (decimal: 51.4108333)
• Longitude: 72° 23' 20'' West   (decimal: -72.3888889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 447 meters
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Sylvio
• GPS Coordinate Locator Map: Lac Sylvio Lat/Long