Lac Dontigny is a Lake located in Saint-Alphonse-Rodriguez; Matawinie, Quebec and has an elevation of 250 meters.

• Latitude: 46° 10' 24'' North   (decimal: 46.1733333)
• Longitude: 73° 44' 17'' West   (decimal: -73.7380555)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 250 meters
• Location: Saint-Alphonse-Rodriguez; Matawinie
• Atlas of Canada Locator Map: Lac Dontigny
• GPS Coordinate Locator Map: Lac Dontigny Lat/Long