Firth Brook is a River located in New Brunswick.

• Latitude: 47° 59' North   (decimal: 47.9832999)
• Longitude: 66° 54' West   (decimal: -66.8999999)
• Topography Feature Category: River
• Geographical Feature: Brook
• Canadian Province/Territory: New Brunswick
• GPS Coordinate Locator Map: Firth Brook Lat/Long