Big Dry Island is a Island located in Rainy River, Ontario and has an elevation of 346 meters.

• Latitude: 48° 33' 32'' North   (decimal: 48.5588888)
• Longitude: 92° 41' 34'' West   (decimal: -92.6927777)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 346 meters
• Location: Rainy River
• Atlas of Canada Locator Map: Big Dry Island
• GPS Coordinate Locator Map: Big Dry Island Lat/Long