Ruisseau O'Brien is a River located in Alleyn-et-Cawood; Pontiac, Quebec and has an elevation of 197 meters.

• Latitude: 45° 51' 22'' North   (decimal: 45.8561651)
• Longitude: 76° 13' 53'' West   (decimal: -76.2313562)
• Topography Feature Category: River
• Geographical Feature: Ruisseau
• Canadian Province/Territory: Quebec
• Elevation: 197 meters
• Location: Alleyn-et-Cawood; Pontiac
• Atlas of Canada Locator Map: Ruisseau O'Brien
• GPS Coordinate Locator Map: Ruisseau O'Brien Lat/Long