Alexander Reef is a Shoal located in Thunder Bay, Ontario and has an elevation of 194 meters.

• Latitude: 48° 12' 36'' North   (decimal: 48.2099999)
• Longitude: 89° 12' 50'' West   (decimal: -89.2138888)
• Topography Feature Category: Shoal
• Geographical Feature: Reef
• Canadian Province/Territory: Ontario
• Elevation: 194 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Alexander Reef
• GPS Coordinate Locator Map: Alexander Reef Lat/Long