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

• Latitude: 55° 16' 27'' North   (decimal: 55.2741667)
• Longitude: 70° 11' 28'' West   (decimal: -70.1911111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• Atlas of Canada Locator Map: Lac Dorcy
• GPS Coordinate Locator Map: Lac Dorcy Lat/Long