Lac Johnson is a Lake located in Wentworth; Argenteuil, Quebec and has an elevation of 254 meters.

• Latitude: 45° 45' 13'' North   (decimal: 45.7536110)
• Longitude: 74° 22' 56'' West   (decimal: -74.3822222)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 254 meters
• Location: Wentworth; Argenteuil
• Atlas of Canada Locator Map: Lac Johnson
• GPS Coordinate Locator Map: Lac Johnson Lat/Long