Lac Hydre is a Lake located in Lac-Pythonga; La Vallée-de-la-Gatineau, Quebec and has an elevation of 389 meters.

• Latitude: 47° 13' 47'' North   (decimal: 47.2297222)
• Longitude: 76° 17' 25'' West   (decimal: -76.2902777)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 389 meters
• Location: Lac-Pythonga; La Vallée-de-la-Gatineau
• Atlas of Canada Locator Map: Lac Hydre
• GPS Coordinate Locator Map: Lac Hydre Lat/Long