South Branch Union Brook is a River located in Restigouche, New Brunswick and has an elevation of 495 meters.

• Latitude: 47° 47' North   (decimal: 47.7832999)
• Longitude: 67° 56' West   (decimal: -67.9332999)
• Topography Feature Category: River
• Geographical Feature: Branch
• Canadian Province/Territory: New Brunswick
• Elevation: 495 meters
• Location: Restigouche
• Atlas of Canada Locator Map: South Branch Union Brook
• GPS Coordinate Locator Map: South Branch Union Brook Lat/Long