Tonkin Lake is a Lake located in Cochrane, Ontario and has an elevation of 281 meters.

• Latitude: 49° 34' 26'' North   (decimal: 49.5738888)
• Longitude: 79° 36' 26'' West   (decimal: -79.6072222)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 281 meters
• Location: Cochrane
• Atlas of Canada Locator Map: Tonkin Lake
• GPS Coordinate Locator Map: Tonkin Lake Lat/Long