Lac Dumau is a Lake located in Chute-des-Passes; Maria-Chapdelaine, Quebec and has an elevation of 352 meters.

• Latitude: 49° 45' 47'' North   (decimal: 49.7630556)
• Longitude: 71° 18' 32'' West   (decimal: -71.3088889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 352 meters
• Location: Chute-des-Passes; Maria-Chapdelaine
• Atlas of Canada Locator Map: Lac Dumau
• GPS Coordinate Locator Map: Lac Dumau Lat/Long