Petit lac Onatchiway is a Lake located in Mont-Valin; Le Fjord-du-Saguenay, Quebec and has an elevation of 292 meters.

• Latitude: 49° 7' 17'' North   (decimal: 49.1213889)
• Longitude: 71° 2' 6'' West   (decimal: -71.035)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 292 meters
• Location: Mont-Valin; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Petit lac Onatchiway
• GPS Coordinate Locator Map: Petit lac Onatchiway Lat/Long