Ruisseau Twelve Mile is a River located in Lac-Casault; La Matapédia, Quebec.

• Latitude: 48° 27' 19'' North   (decimal: 48.4553250)
• Longitude: 66° 31' 48'' West   (decimal: -66.5299597)
• Topography Feature Category: River
• Geographical Feature: Ruisseau
• Canadian Province/Territory: Quebec
• Location: Lac-Casault; La Matapédia
• GPS Coordinate Locator Map: Ruisseau Twelve Mile Lat/Long