Lac Grassy is a Lake located in Moffet; Témiscamingue, Quebec and has an elevation of 245 meters.

• Latitude: 47° 38' 54'' North   (decimal: 47.6483333)
• Longitude: 78° 49' 4'' West   (decimal: -78.8177778)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 245 meters
• Location: Moffet; Témiscamingue
• Atlas of Canada Locator Map: Lac Grassy
• GPS Coordinate Locator Map: Lac Grassy Lat/Long