Second lac Demuth is a Lake located in Lac-Croche; La Jacques-Cartier, Quebec and has an elevation of 535 meters.

• Latitude: 47° 38' 54'' North   (decimal: 47.6483333)
• Longitude: 71° 54' 54'' West   (decimal: -71.915)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 535 meters
• Location: Lac-Croche; La Jacques-Cartier
• Atlas of Canada Locator Map: Second lac Demuth
• GPS Coordinate Locator Map: Second lac Demuth Lat/Long