Lac Castor is a Lake located in Saint-Paulin; Maskinongé, Quebec and has an elevation of 255 meters.

• Latitude: 46° 27' 30'' North   (decimal: 46.4583333)
• Longitude: 73° 4' 9'' West   (decimal: -73.0691666)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 255 meters
• Location: Saint-Paulin; Maskinongé
• Atlas of Canada Locator Map: Lac Castor
• GPS Coordinate Locator Map: Lac Castor Lat/Long