Lac à Castor is a Lake located in Longue-Pointe-de-Mingan; Minganie, Quebec and has an elevation of 92 meters.

• Latitude: 50° 16' 47'' North   (decimal: 50.2797222)
• Longitude: 64° 9' 45'' West   (decimal: -64.1625)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 92 meters
• Location: Longue-Pointe-de-Mingan; Minganie
• Atlas of Canada Locator Map: Lac à Castor
• GPS Coordinate Locator Map: Lac à Castor Lat/Long