Lac Isidore is a Lake located in Saint-Cyrille-de-Lessard; L'Islet, Quebec and has an elevation of 392 meters.

• Latitude: 46° 57' 53'' North   (decimal: 46.9647222)
• Longitude: 70° 15' 43'' West   (decimal: -70.2619444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 392 meters
• Location: Saint-Cyrille-de-Lessard; L'Islet
• Atlas of Canada Locator Map: Lac Isidore
• GPS Coordinate Locator Map: Lac Isidore Lat/Long