Lac Alsou is a Lake located in Lac-Nilgaut; Pontiac, Quebec and has an elevation of 431 meters.

• Latitude: 46° 58' 49'' North   (decimal: 46.9802778)
• Longitude: 76° 48' 24'' West   (decimal: -76.8066667)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 431 meters
• Location: Lac-Nilgaut; Pontiac
• Atlas of Canada Locator Map: Lac Alsou
• GPS Coordinate Locator Map: Lac Alsou Lat/Long