Thumb Lake is a Lake located in Haliburton, Ontario and has an elevation of 448 meters.

• Latitude: 45° 23' 23'' North   (decimal: 45.3897222)
• Longitude: 78° 52' 18'' West   (decimal: -78.8716666)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 448 meters
• Location: Haliburton
• Atlas of Canada Locator Map: Thumb Lake
• GPS Coordinate Locator Map: Thumb Lake Lat/Long