Spar Reef is a Shoal located in Thunder Bay, Ontario and has an elevation of 185 meters.

• Latitude: 48° 6' 53'' North   (decimal: 48.1147222)
• Longitude: 89° 16' 44'' West   (decimal: -89.2788888)
• Topography Feature Category: Shoal
• Geographical Feature: Reef
• Canadian Province/Territory: Ontario
• Elevation: 185 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Spar Reef
• GPS Coordinate Locator Map: Spar Reef Lat/Long