Lac Simpson is a Lake located in Saint-Alexis-des-Monts; Maskinongé, Quebec and has an elevation of 408 meters.

• Latitude: 46° 43' 55'' North   (decimal: 46.7319764)
• Longitude: 73° 15' 17'' West   (decimal: -73.2548531)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 408 meters
• Location: Saint-Alexis-des-Monts; Maskinongé
• Atlas of Canada Locator Map: Lac Simpson
• GPS Coordinate Locator Map: Lac Simpson Lat/Long