Alder Brook is a River located in Lillooet Land District, British Columbia.

• Latitude: 50° 50' 18'' North   (decimal: 50.8382999)
• Longitude: 122° 54' 45'' West   (decimal: -122.9124999)
• Topography Feature Category: River
• Geographical Feature: Brook
• Canadian Province/Territory: British Columbia
• Location: Lillooet Land District
• Atlas of Canada Locator Map: Alder Brook
• GPS Coordinate Locator Map: Alder Brook Lat/Long