Premier lac du Castor is a Lake located in Notre-Dame-de-la-Merci; Matawinie, Quebec and has an elevation of 394 meters.

• Latitude: 46° 16' 2'' North   (decimal: 46.2672221)
• Longitude: 73° 58' 24'' West   (decimal: -73.9733332)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 394 meters
• Location: Notre-Dame-de-la-Merci; Matawinie
• Atlas of Canada Locator Map: Premier lac du Castor
• GPS Coordinate Locator Map: Premier lac du Castor Lat/Long