Lac de l'Herbe à Castor is a Lake located in La Tuque; Le Haut-Saint-Maurice, Quebec.

• Latitude: 48° 1' 31'' North   (decimal: 48.0252778)
• Longitude: 74° 15' 6'' West   (decimal: -74.2516667)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: La Tuque; Le Haut-Saint-Maurice
• Atlas of Canada Locator Map: Lac de l'Herbe à Castor
• GPS Coordinate Locator Map: Lac de l'Herbe à Castor Lat/Long