Lac Callaghan is a Lake located in Lac-Nilgaut; Pontiac, Quebec and has an elevation of 331 meters.

• Latitude: 46° 42' 7'' North   (decimal: 46.7019444)
• Longitude: 77° 25' 23'' West   (decimal: -77.4230556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 331 meters
• Location: Lac-Nilgaut; Pontiac
• Atlas of Canada Locator Map: Lac Callaghan
• GPS Coordinate Locator Map: Lac Callaghan Lat/Long