The river gives its name to Kazabazua, a village in La Vallée-de-la-Gatineau Regional County Municipality. Derived from the Algonquin language, the name of this river has had many spellings including "Kazaluzu", "Kasubasua", "Cazabasua", "Cazibazouis", "Cazebalzuac", and "Cajibajouis". The name is said to be derived from kachibadjiwan (kach meaning "hidden" and djiwan meaning "current")—a reflection of local topography as the Kazabazua briefly becomes an underground river before resurfacing a few dozen metres downstream. The river then flows through rapids and passes under a natural stone bridge.
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