Bertha Lake is a Lake located in Thunder Bay, Ontario and has an elevation of 408 meters.

• Latitude: 48° 4' 39'' North   (decimal: 48.0775000)
• Longitude: 85° 50' 31'' West   (decimal: -85.8419444)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 408 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Bertha Lake
• GPS Coordinate Locator Map: Bertha Lake Lat/Long