Duncan Slough is a Lake located in New Westminster Land District, British Columbia and has an elevation of 29 meters.

• Latitude: 49° 14' 51'' North   (decimal: 49.2475)
• Longitude: 121° 55' 54'' West   (decimal: -121.931667)
• Topography Feature Category: Lake
• Geographical Feature: Slough
• Canadian Province/Territory: British Columbia
• Elevation: 29 meters
• Location: New Westminster Land District
• Atlas of Canada Locator Map: Duncan Slough
• GPS Coordinate Locator Map: Duncan Slough Lat/Long