(unnamed)

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(unnamed) flows into Rio Guaporé (Brasil) / Rio Itenez (Bolivia) , which it joins at S 12° 30′ 24″, W 63° 33′ 12″ at OSM node n4310353715, and there 3,709 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• Rio São Miguel, which joins it at S 11° 58′ 10″, W 63° 0′ 1″ at OSM node n11380641817, and 56 km of total upstream flows in.
load it's tributaries