Joly Rock is a Shoal located in Algoma, Ontario and has an elevation of 180 meters.

• Latitude: 46° 19' 27'' North   (decimal: 46.3241666)
• Longitude: 83° 53' 6'' West   (decimal: -83.8849999)
• Topography Feature Category: Shoal
• Geographical Feature: Rock
• Canadian Province/Territory: Ontario
• Elevation: 180 meters
• Location: Algoma
• Atlas of Canada Locator Map: Joly Rock
• GPS Coordinate Locator Map: Joly Rock Lat/Long