Long Deadwater is a River feature located in Northumberland, New Brunswick and has an elevation of 389 meters.

• Latitude: 47° 0' 56'' North   (decimal: 47.0156329)
• Longitude: 66° 39' 34'' West   (decimal: -66.6594543)
• Topography Feature Category: River feature
• Geographical Feature: Deadwater
• Canadian Province/Territory: New Brunswick
• Elevation: 389 meters
• Location: Northumberland
• Atlas of Canada Locator Map: Long Deadwater
• GPS Coordinate Locator Map: Long Deadwater Lat/Long