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

• Latitude: 50° 39' 22'' North   (decimal: 50.6561111)
• Longitude: 67° 13' 43'' West   (decimal: -67.2286111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Walker; Sept-Rivières
• Atlas of Canada Locator Map: Lac Couriac
• GPS Coordinate Locator Map: Lac Couriac Lat/Long