Lac William-Henry is a Lake located in Wentworth-Nord; Les Pays-d'en-Haut, Quebec and has an elevation of 339 meters.

• Latitude: 45° 49' 00'' North   (decimal: 45.8166666)
• Longitude: 74° 26' 28'' West   (decimal: -74.4411111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 339 meters
• Location: Wentworth-Nord; Les Pays-d'en-Haut
• Atlas of Canada Locator Map: Lac William-Henry
• GPS Coordinate Locator Map: Lac William-Henry Lat/Long