Lac Rosa is a Lake located in Lac-Nilgaut; Pontiac, Quebec and has an elevation of 289 meters.

• Latitude: 46° 5' 40'' North   (decimal: 46.0944444)
• Longitude: 76° 24' 10'' West   (decimal: -76.4027778)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 289 meters
• Location: Lac-Nilgaut; Pontiac
• Atlas of Canada Locator Map: Lac Rosa
• GPS Coordinate Locator Map: Lac Rosa Lat/Long