(unnamed)

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(unnamed) flows into Rio das Antas , which it joins at S 29° 4′ 6″, W 51° 22′ 11″ at OSM node n283364425, and there 2,354 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• Arroio Biazus, which joins it at S 29° 6′ 52″, W 51° 20′ 35″ at OSM node n496623944, and 17 km of total upstream flows in.
load it's tributaries