Lac Barnes is a Lake located in Thorne; Pontiac, Quebec and has an elevation of 209 meters.

• Latitude: 45° 44' 55'' North   (decimal: 45.7486111)
• Longitude: 76° 20' 37'' West   (decimal: -76.3436111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 209 meters
• Location: Thorne; Pontiac
• Atlas of Canada Locator Map: Lac Barnes
• GPS Coordinate Locator Map: Lac Barnes Lat/Long