Stewart's Island is a Island located in Lanark, Ontario and has an elevation of 149 meters.

• Latitude: 44° 59' 11'' North   (decimal: 44.9863888)
• Longitude: 76° 22' 22'' West   (decimal: -76.3727777)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 149 meters
• Location: Lanark
• Atlas of Canada Locator Map: Stewart's Island
• GPS Coordinate Locator Map: Stewart's Island Lat/Long