Lac Hélyodore is a Lake located in Saint-Thomas-Didyme; Maria-Chapdelaine, Quebec and has an elevation of 230 meters.

• Latitude: 48° 57' 10'' North   (decimal: 48.9528004)
• Longitude: 72° 44' 18'' West   (decimal: -72.7383788)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 230 meters
• Location: Saint-Thomas-Didyme; Maria-Chapdelaine
• Atlas of Canada Locator Map: Lac Hélyodore
• GPS Coordinate Locator Map: Lac Hélyodore Lat/Long