The Bărzăuța (in its upper course also: Apa Roșie) is a right tributary of the river Uz in Romania.Ovidiu Gabor - , map page 10 It discharges into the Uz near Valea Uzului.Barzauta / Apa Rosie / Raul Rosu (jud. Harghita), e-calauza.ro Its length is and its basin size is .

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