Lac Castor is a Lake located in Lac-au-Brochet; La Haute-Côte-Nord, Quebec and has an elevation of 317 meters.

• Latitude: 48° 18' 32'' North   (decimal: 48.3089123)
• Longitude: 69° 46' 31'' West   (decimal: -69.7753334)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 317 meters
• Location: Lac-au-Brochet; La Haute-Côte-Nord
• Atlas of Canada Locator Map: Lac Castor
• GPS Coordinate Locator Map: Lac Castor Lat/Long