Williamson Drain is a Hydraulic construction located in Glengarry, Ontario and has an elevation of 67 meters.

• Latitude: 45° 10' 54'' North   (decimal: 45.1816666)
• Longitude: 74° 37' 20'' West   (decimal: -74.6222222)
• Topography Feature Category: Hydraulic construction
• Geographical Feature: Drain
• Canadian Province/Territory: Ontario
• Elevation: 67 meters
• Location: Glengarry
• Atlas of Canada Locator Map: Williamson Drain
• GPS Coordinate Locator Map: Williamson Drain Lat/Long