Big Island Shoal is a Shoal located in Leeds, Ontario and has an elevation of 136 meters.

• Latitude: 44° 43' 5'' North   (decimal: 44.7180555)
• Longitude: 76° 12' 48'' West   (decimal: -76.2133333)
• Topography Feature Category: Shoal
• Geographical Feature: Shoal
• Canadian Province/Territory: Ontario
• Elevation: 136 meters
• Location: Leeds
• Atlas of Canada Locator Map: Big Island Shoal
• GPS Coordinate Locator Map: Big Island Shoal Lat/Long