Sentinel Island is a Island located in Sudbury, Ontario and has an elevation of 235 meters.

• Latitude: 46° 14' 11'' North   (decimal: 46.2363888)
• Longitude: 81° 17' 47'' West   (decimal: -81.2963888)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 235 meters
• Location: Sudbury
• Atlas of Canada Locator Map: Sentinel Island
• GPS Coordinate Locator Map: Sentinel Island Lat/Long