Willis Lake is a Lake located in Lanark, Ontario and has an elevation of 178 meters.

• Latitude: 45° 15' 18'' North   (decimal: 45.2550000)
• Longitude: 76° 28' 4'' West   (decimal: -76.4677777)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 178 meters
• Location: Lanark
• Atlas of Canada Locator Map: Willis Lake
• GPS Coordinate Locator Map: Willis Lake Lat/Long