Lac Vire-Sec is a Lake located in Lac-Walker; Sept-Rivières, Quebec.

• Latitude: 50° 45' 15'' North   (decimal: 50.7541667)
• Longitude: 67° 3' 50'' West   (decimal: -67.0638889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Walker; Sept-Rivières
• Atlas of Canada Locator Map: Lac Vire-Sec
• GPS Coordinate Locator Map: Lac Vire-Sec Lat/Long