Big Rat Slough is a Lake located in Mackenzie, Northwest Territories and has an elevation of 157 meters.

• Latitude: 61° 3' 46'' North   (decimal: 61.0626514)
• Longitude: 112° 53' 44'' West   (decimal: -112.8955934)
• Topography Feature Category: Lake
• Geographical Feature: Slough
• Canadian Province/Territory: Northwest Territories
• Elevation: 157 meters
• Location: Mackenzie
• Atlas of Canada Locator Map: Big Rat Slough
• GPS Coordinate Locator Map: Big Rat Slough Lat/Long