Plumper Rock is a Shoal located in Saint John, New Brunswick and has an elevation of 4 meters.

• Latitude: 45° 4' 21'' North   (decimal: 45.0724421)
• Longitude: 66° 26' 33'' West   (decimal: -66.4424985)
• Topography Feature Category: Shoal
• Geographical Feature: Rock
• Canadian Province/Territory: New Brunswick
• Elevation: 4 meters
• Location: Saint John
• Atlas of Canada Locator Map: Plumper Rock
• GPS Coordinate Locator Map: Plumper Rock Lat/Long