Étangs des Trente Milles is a Lake located in Lac-des-Eaux-Mortes; La Mitis, Quebec.

• Latitude: 48° 9' 0'' North   (decimal: 48.15)
• Longitude: 67° 40' 44'' West   (decimal: -67.6788889)
• Topography Feature Category: Lake
• Geographical Feature: Étangs
• Canadian Province/Territory: Quebec
• Location: Lac-des-Eaux-Mortes; La Mitis
• Atlas of Canada Locator Map: Étangs des Trente Milles
• GPS Coordinate Locator Map: Étangs des Trente Milles Lat/Long