(unnamed)

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(unnamed) flows into Río Balsas , which it joins at N 18° 30′ 32″, W 101° 6′ 41″ at OSM node n3793882834, and there 5,050 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• Río Chiquito, which joins it at N 18° 40′ 16″, W 101° 6′ 35″ at OSM node n2779093490, and 265 km of total upstream flows in.
load it's tributaries