Lac Gratton is a Lake located in Otter Lake; Pontiac, Quebec and has an elevation of 234 meters.

• Latitude: 45° 57' 14'' North   (decimal: 45.9538889)
• Longitude: 76° 30' 33'' West   (decimal: -76.5091667)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 234 meters
• Location: Otter Lake; Pontiac
• Atlas of Canada Locator Map: Lac Gratton
• GPS Coordinate Locator Map: Lac Gratton Lat/Long