Peter Rock is a Shoal located in Northumberland, Ontario and has an elevation of 74 meters.

• Latitude: 43° 56' 29'' North   (decimal: 43.9413888)
• Longitude: 78° 13' 36'' West   (decimal: -78.2266666)
• Topography Feature Category: Shoal
• Geographical Feature: Rock
• Canadian Province/Territory: Ontario
• Elevation: 74 meters
• Location: Northumberland
• Atlas of Canada Locator Map: Peter Rock
• GPS Coordinate Locator Map: Peter Rock Lat/Long