Lac au Rognon de Castor is a Lake located in Lac-Walker; Sept-Rivières, Quebec.

• Latitude: 50° 18' 28'' North   (decimal: 50.3077778)
• Longitude: 67° 5' 43'' West   (decimal: -67.0952778)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Walker; Sept-Rivières
• Atlas of Canada Locator Map: Lac au Rognon de Castor
• GPS Coordinate Locator Map: Lac au Rognon de Castor Lat/Long