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

• Latitude: 56° 2' 39'' North   (decimal: 56.0442881)
• Longitude: 69° 31' 21'' West   (decimal: -69.5224143)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• Atlas of Canada Locator Map: Lac Waunusiwau
• GPS Coordinate Locator Map: Lac Waunusiwau Lat/Long