Lac Barnston is a Lake located in Coaticook; Coaticook, Quebec and has an elevation of 422 meters.

• Latitude: 45° 6' 43'' North   (decimal: 45.1119885)
• Longitude: 71° 53' 7'' West   (decimal: -71.8853705)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 422 meters
• Location: Coaticook; Coaticook
• Atlas of Canada Locator Map: Lac Barnston
• GPS Coordinate Locator Map: Lac Barnston Lat/Long