Lac Onawa is a Lake located in Saint-Zénon; Matawinie, Quebec and has an elevation of 477 meters.

• Latitude: 46° 28' 41'' North   (decimal: 46.4780928)
• Longitude: 73° 43' 31'' West   (decimal: -73.7251426)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 477 meters
• Location: Saint-Zénon; Matawinie
• Atlas of Canada Locator Map: Lac Onawa
• GPS Coordinate Locator Map: Lac Onawa Lat/Long