Petit lac Piashti is a Lake located in Baie-Johan-Beetz; Minganie, Quebec and has an elevation of 61 meters.

• Latitude: 50° 24' 12'' North   (decimal: 50.4034061)
• Longitude: 62° 50' 2'' West   (decimal: -62.8340053)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 61 meters
• Location: Baie-Johan-Beetz; Minganie
• Atlas of Canada Locator Map: Petit lac Piashti
• GPS Coordinate Locator Map: Petit lac Piashti Lat/Long