O'Brien Lake is a Lake located in Halifax, Nova Scotia and has an elevation of 97 meters.

• Latitude: 44° 51' 52'' North   (decimal: 44.8644444)
• Longitude: 63° 28' 39'' West   (decimal: -63.4775000)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Nova Scotia
• Elevation: 97 meters
• Location: Halifax
• Atlas of Canada Locator Map: O'Brien Lake
• GPS Coordinate Locator Map: O'Brien Lake Lat/Long