Rocky Island Lake is a Lake located in Thunder Bay, Ontario and has an elevation of 381 meters.

• Latitude: 50° 18' 43'' North   (decimal: 50.3119444)
• Longitude: 89° 18' 16'' West   (decimal: -89.3044444)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 381 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Rocky Island Lake
• GPS Coordinate Locator Map: Rocky Island Lake Lat/Long