Lac MacStay is a Lake located in Lac-Blanc; Portneuf, Quebec and has an elevation of 608 meters.

• Latitude: 47° 14' 33'' North   (decimal: 47.2425247)
• Longitude: 71° 50' 44'' West   (decimal: -71.8456472)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 608 meters
• Location: Lac-Blanc; Portneuf
• Atlas of Canada Locator Map: Lac MacStay
• GPS Coordinate Locator Map: Lac MacStay Lat/Long