Lac Istre is a Lake located in Baie-James; Jamésie, Quebec and has an elevation of 440 meters.

• Latitude: 54° 13' 10'' North   (decimal: 54.2194444)
• Longitude: 72° 11' 26'' West   (decimal: -72.1905555)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 440 meters
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Istre
• GPS Coordinate Locator Map: Lac Istre Lat/Long