Lac Johnny is a Lake located in Saint-Marcel; L'Islet, Quebec and has an elevation of 445 meters.

• Latitude: 46° 53' 13'' North   (decimal: 46.8869444)
• Longitude: 70° 6' 23'' West   (decimal: -70.1063888)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 445 meters
• Location: Saint-Marcel; L'Islet
• Atlas of Canada Locator Map: Lac Johnny
• GPS Coordinate Locator Map: Lac Johnny Lat/Long