Lac Astret is a Lake located in Lac-Nilgaut; Pontiac, Quebec and has an elevation of 373 meters.

• Latitude: 46° 43' 38'' North   (decimal: 46.7272222)
• Longitude: 77° 33' 59'' West   (decimal: -77.5663889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 373 meters
• Location: Lac-Nilgaut; Pontiac
• Atlas of Canada Locator Map: Lac Astret
• GPS Coordinate Locator Map: Lac Astret Lat/Long