Ruisseau Umatahastikw is a River located in Baie-James; Jamésie, Quebec.

• Latitude: 52° 56' 48'' North   (decimal: 52.9466667)
• Longitude: 77° 59' 48'' West   (decimal: -77.9966667)
• Topography Feature Category: River
• Geographical Feature: Ruisseau
• Canadian Province/Territory: Quebec
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Ruisseau Umatahastikw
• GPS Coordinate Locator Map: Ruisseau Umatahastikw Lat/Long