Fourth Lake is a Lake located in Thunder Bay, Ontario and has an elevation of 345 meters.

• Latitude: 48° 46' 50'' North   (decimal: 48.7805555)
• Longitude: 87° 16' 38'' West   (decimal: -87.2772222)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 345 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Fourth Lake
• GPS Coordinate Locator Map: Fourth Lake Lat/Long