Lac Lamarck is a Lake located in Rapides-des-Joachims; Pontiac, Quebec and has an elevation of 306 meters.

• Latitude: 46° 17' 28'' North   (decimal: 46.2911722)
• Longitude: 77° 49' 39'' West   (decimal: -77.8275334)
• Topography Feature Category: Lake
• Geographical Feature: Étang
• Canadian Province/Territory: Quebec
• Elevation: 306 meters
• Location: Rapides-des-Joachims; Pontiac
• Atlas of Canada Locator Map: Lac Lamarck
• GPS Coordinate Locator Map: Lac Lamarck Lat/Long