Lac Brown is a Lake located in Grenville-sur-la-Rouge; Argenteuil, Quebec.

• Latitude: 45° 41' 14'' North   (decimal: 45.6871999)
• Longitude: 74° 41' 37'' West   (decimal: -74.6936000)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Grenville-sur-la-Rouge; Argenteuil
• GPS Coordinate Locator Map: Lac Brown Lat/Long