(unnamed)

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(unnamed) flows into Rio Icamaquá , which it joins at S 28° 44′ 25″, W 55° 6′ 47″ at OSM node n496611456, and there 243 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• Arroio Pesqueiro, which joins it at S 28° 41′ 58″, W 55° 5′ 15″ at OSM node n5303891668, and 6 km of total upstream flows in.
load it's tributaries