Lac Marennes is a Lake located in Lac-au-Brochet; La Haute-Côte-Nord, Quebec and has an elevation of 275 meters.

• Latitude: 48° 24' 6'' North   (decimal: 48.4016912)
• Longitude: 69° 44' 48'' West   (decimal: -69.7467219)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 275 meters
• Location: Lac-au-Brochet; La Haute-Côte-Nord
• Atlas of Canada Locator Map: Lac Marennes
• GPS Coordinate Locator Map: Lac Marennes Lat/Long