Lac à Thom is a Lake located in Belle-Rivière; Lac-Saint-Jean-Est, Quebec and has an elevation of 366 meters.

• Latitude: 48° 12' 25'' North   (decimal: 48.2069444)
• Longitude: 71° 40' 51'' West   (decimal: -71.6808333)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 366 meters
• Location: Belle-Rivière; Lac-Saint-Jean-Est
• Atlas of Canada Locator Map: Lac à Thom
• GPS Coordinate Locator Map: Lac à Thom Lat/Long