Lac Crombiau is a Lake located in Lac-Walker; Sept-Rivières, Quebec.

• Latitude: 50° 44' 33'' North   (decimal: 50.7425)
• Longitude: 67° 23' 6'' West   (decimal: -67.385)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Walker; Sept-Rivières
• Atlas of Canada Locator Map: Lac Crombiau
• GPS Coordinate Locator Map: Lac Crombiau Lat/Long