Spider Reef is a Shoal located in Thunder Bay, Ontario and has an elevation of 197 meters.

• Latitude: 48° 48' 50'' North   (decimal: 48.8138888)
• Longitude: 87° 29' 7'' West   (decimal: -87.4852777)
• Topography Feature Category: Shoal
• Geographical Feature: Reef
• Canadian Province/Territory: Ontario
• Elevation: 197 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Spider Reef
• GPS Coordinate Locator Map: Spider Reef Lat/Long