Lac Ergot is a Lake located in Lac-Ashuapmushuan; Le Domaine-du-Roy, Quebec and has an elevation of 490 meters.

• Latitude: 48° 31' 30'' North   (decimal: 48.525)
• Longitude: 72° 51' 9'' West   (decimal: -72.8525)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 490 meters
• Location: Lac-Ashuapmushuan; Le Domaine-du-Roy
• Atlas of Canada Locator Map: Lac Ergot
• GPS Coordinate Locator Map: Lac Ergot Lat/Long