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

• Latitude: 54° 1' 42'' North   (decimal: 54.0283333)
• Longitude: 77° 43' 37'' West   (decimal: -77.7269444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Piagochioui
• GPS Coordinate Locator Map: Lac Piagochioui Lat/Long