Dewey's Island is a Island located in Hastings, Ontario and has an elevation of 325 meters.

• Latitude: 44° 49' 47'' North   (decimal: 44.8297222)
• Longitude: 77° 41' 14'' West   (decimal: -77.6872222)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 325 meters
• Location: Hastings
• Atlas of Canada Locator Map: Dewey's Island
• GPS Coordinate Locator Map: Dewey's Island Lat/Long