Hennessy Lake is a Lake located in Sudbury, Ontario and has an elevation of 402 meters.

• Latitude: 47° 22' 44'' North   (decimal: 47.3788888)
• Longitude: 81° 27' 53'' West   (decimal: -81.4647222)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 402 meters
• Location: Sudbury
• Atlas of Canada Locator Map: Hennessy Lake
• GPS Coordinate Locator Map: Hennessy Lake Lat/Long