Lac Séguin is a Lake located in Lac-Ashuapmushuan; Le Domaine-du-Roy, Quebec and has an elevation of 370 meters.

• Latitude: 49° 4' 6'' North   (decimal: 49.0683333)
• Longitude: 73° 21' 21'' West   (decimal: -73.3558333)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 370 meters
• Location: Lac-Ashuapmushuan; Le Domaine-du-Roy
• Atlas of Canada Locator Map: Lac Séguin
• GPS Coordinate Locator Map: Lac Séguin Lat/Long