Lac Coughlin is a Lake located in Lac-Nilgaut; Pontiac, Quebec and has an elevation of 362 meters.

• Latitude: 46° 50' 43'' North   (decimal: 46.8452778)
• Longitude: 77° 39' 3'' West   (decimal: -77.6508333)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 362 meters
• Location: Lac-Nilgaut; Pontiac
• Atlas of Canada Locator Map: Lac Coughlin
• GPS Coordinate Locator Map: Lac Coughlin Lat/Long