Lac Siège is a Lake located in Lac-Ashuapmushuan; Le Domaine-du-Roy, Quebec and has an elevation of 531 meters.

• Latitude: 48° 28' 52'' North   (decimal: 48.4811111)
• Longitude: 73° 6' 14'' West   (decimal: -73.1038889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 531 meters
• Location: Lac-Ashuapmushuan; Le Domaine-du-Roy
• Atlas of Canada Locator Map: Lac Siège
• GPS Coordinate Locator Map: Lac Siège Lat/Long