Efby Lake is a Lake located in Sudbury, Ontario and has an elevation of 460 meters.

• Latitude: 47° 26' 2'' North   (decimal: 47.4338888)
• Longitude: 82° 51' 0'' West   (decimal: -82.8500000)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 460 meters
• Location: Sudbury
• Atlas of Canada Locator Map: Efby Lake
• GPS Coordinate Locator Map: Efby Lake Lat/Long