Lac Otatau is a Lake located in Lac-Ashuapmushuan; Le Domaine-du-Roy, Quebec and has an elevation of 395 meters.

• Latitude: 49° 8' 42'' North   (decimal: 49.145)
• Longitude: 73° 57' 27'' West   (decimal: -73.9575)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 395 meters
• Location: Lac-Ashuapmushuan; Le Domaine-du-Roy
• Atlas of Canada Locator Map: Lac Otatau
• GPS Coordinate Locator Map: Lac Otatau Lat/Long