Mountain Slough is a Lake located in New Westminster Land District, British Columbia and has an elevation of 115 meters.

• Latitude: 49° 14' North   (decimal: 49.2333000)
• Longitude: 121° 51' West   (decimal: -121.8499999)
• Topography Feature Category: Lake
• Geographical Feature: Slough
• Canadian Province/Territory: British Columbia
• Elevation: 115 meters
• Location: New Westminster Land District
• Atlas of Canada Locator Map: Mountain Slough
• GPS Coordinate Locator Map: Mountain Slough Lat/Long