Johnsons Lake is a Lake located in Frontenac, Ontario and has an elevation of 362 meters.

• Latitude: 45° 3' 29'' North   (decimal: 45.0580555)
• Longitude: 77° 5' 56'' West   (decimal: -77.0988888)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 362 meters
• Location: Frontenac
• Atlas of Canada Locator Map: Johnsons Lake
• GPS Coordinate Locator Map: Johnsons Lake Lat/Long