Lac Pwachis is a Lake located in Baie-James; Jamésie, Quebec and has an elevation of 121 meters.

• Latitude: 52° 26' 18'' North   (decimal: 52.4383333)
• Longitude: 77° 56' 22'' West   (decimal: -77.9394444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 121 meters
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Pwachis
• GPS Coordinate Locator Map: Lac Pwachis Lat/Long