Lac Richelieu is a Lake located in Montcerf-Lytton; La Vallée-de-la-Gatineau, Quebec.

• Latitude: 46° 29' 8'' North   (decimal: 46.4855556)
• Longitude: 76° 7' 53'' West   (decimal: -76.1313889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Montcerf-Lytton; La Vallée-de-la-Gatineau
• GPS Coordinate Locator Map: Lac Richelieu Lat/Long