Lac Grenier is a Lake located in Lac-Blanc; Portneuf, Quebec.

• Latitude: 47° 20' 49'' North   (decimal: 47.3469444)
• Longitude: 72° 9' 29'' West   (decimal: -72.1580556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Blanc; Portneuf
• GPS Coordinate Locator Map: Lac Grenier Lat/Long