There are several rivers named Guariba River in Brazil:
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Guariba River (Aripuanã River tributary)
Guariba River ( pt, Rio Guariba) is a river of the Mato Grosso and Amazonas states in north-western Brazil. It is a tributary of the Aripuanã River.
Course
In Mato Grosso the river forms the eastern boundary of the northern half of the Guari ...
, in Amazonas & Mato Grosso
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Guariba River (Pauini River tributary), in Amazonas
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