Duffus Drain is a Hydraulic construction located in Lambton, Ontario and has an elevation of 176 meters.

• Latitude: 43° 13' 1'' North   (decimal: 43.2169444)
• Longitude: 81° 57' 22'' West   (decimal: -81.9561111)
• Topography Feature Category: Hydraulic construction
• Geographical Feature: Drain
• Canadian Province/Territory: Ontario
• Elevation: 176 meters
• Location: Lambton
• Atlas of Canada Locator Map: Duffus Drain
• GPS Coordinate Locator Map: Duffus Drain Lat/Long