Cornerstone Lake is a Lake located in Kenora, Ontario and has an elevation of 402 meters.

• Latitude: 49° 47' 28'' North   (decimal: 49.7911111)
• Longitude: 91° 54' 31'' West   (decimal: -91.9086111)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 402 meters
• Location: Kenora
• Atlas of Canada Locator Map: Cornerstone Lake
• GPS Coordinate Locator Map: Cornerstone Lake Lat/Long