Duncs Lake is a Lake located in Lanark, Ontario and has an elevation of 206 meters.

• Latitude: 45° 11' 15'' North   (decimal: 45.1875000)
• Longitude: 76° 31' 22'' West   (decimal: -76.5227777)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 206 meters
• Location: Lanark
• Atlas of Canada Locator Map: Duncs Lake
• GPS Coordinate Locator Map: Duncs Lake Lat/Long