(unnamed)

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(unnamed) flows into Arroio São João , which it joins at S 25° 37′ 0″, W 54° 27′ 29″ at OSM node n8391421529, and there 54 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• Rio São João, which joins it at S 25° 32′ 41″, W 54° 25′ 27″ at OSM node n8391911658, and 18 km of total upstream flows in.
load it's tributaries