Lac Altherr is a Lake located in Senneterre; Vallée-de-l'Or, Quebec and has an elevation of 399 meters.

• Latitude: 48° 57' 2'' North   (decimal: 48.9505556)
• Longitude: 76° 1' 25'' West   (decimal: -76.0236111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 399 meters
• Location: Senneterre; Vallée-de-l'Or
• Atlas of Canada Locator Map: Lac Altherr
• GPS Coordinate Locator Map: Lac Altherr Lat/Long