Duncan Rock is a Shoal located in Algoma, Ontario and has an elevation of 177 meters.

• Latitude: 46° 17' 23'' North   (decimal: 46.2897222)
• Longitude: 83° 50' 53'' West   (decimal: -83.8480555)
• Topography Feature Category: Shoal
• Geographical Feature: Rock
• Canadian Province/Territory: Ontario
• Elevation: 177 meters
• Location: Algoma
• Atlas of Canada Locator Map: Duncan Rock
• GPS Coordinate Locator Map: Duncan Rock Lat/Long