Lac Upasi is a Lake located in Baie-James; Jamésie, Quebec.

• Latitude: 54° 32' 3'' North   (decimal: 54.5341667)
• Longitude: 79° 8' 44'' West   (decimal: -79.1455555)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Upasi
• GPS Coordinate Locator Map: Lac Upasi Lat/Long