Assef Islands is a Island located in Thunder Bay, Ontario and has an elevation of 271 meters.

• Latitude: 49° 38' 58'' North   (decimal: 49.6494444)
• Longitude: 88° 21' 25'' West   (decimal: -88.3569444)
• Topography Feature Category: Island
• Geographical Feature: Islands
• Canadian Province/Territory: Ontario
• Elevation: 271 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Assef Islands
• GPS Coordinate Locator Map: Assef Islands Lat/Long