Lac-Ouareau is a Unincorporated area located in Saint-Donat; Matawinie, Quebec and has an elevation of 400 meters.

• Latitude: 46° 18' 43'' North   (decimal: 46.3119855)
• Longitude: 74° 7' 29'' West   (decimal: -74.1246024)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Hameau
• Canadian Province/Territory: Quebec
• Elevation: 400 meters
• Location: Saint-Donat; Matawinie
• Atlas of Canada Locator Map: Lac-Ouareau
• GPS Coordinate Locator Map: Lac-Ouareau Lat/Long