Slab Island is a Island located in Lanark, Ontario and has an elevation of 125 meters.

• Latitude: 44° 52' 23'' North   (decimal: 44.8730555)
• Longitude: 76° 5' 15'' West   (decimal: -76.0875000)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 125 meters
• Location: Lanark
• Atlas of Canada Locator Map: Slab Island
• GPS Coordinate Locator Map: Slab Island Lat/Long