Lac Duhamel is a Lake located in Rivière-Koksoak; Kativik, Quebec.

• Latitude: 56° 25' 11'' North   (decimal: 56.4197222)
• Longitude: 67° 19' 22'' West   (decimal: -67.3227778)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• Atlas of Canada Locator Map: Lac Duhamel
• GPS Coordinate Locator Map: Lac Duhamel Lat/Long