Underwood Brook is a River located in Northumberland, New Brunswick and has an elevation of 63 meters.

• Latitude: 46° 45' 44'' North   (decimal: 46.7623352)
• Longitude: 66° 0' 56'' West   (decimal: -66.0154512)
• Topography Feature Category: River
• Geographical Feature: Brook
• Canadian Province/Territory: New Brunswick
• Elevation: 63 meters
• Location: Northumberland
• Atlas of Canada Locator Map: Underwood Brook
• GPS Coordinate Locator Map: Underwood Brook Lat/Long