(unnamed)

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(unnamed) flows into the sea: 43 km flows in at N 18° 19′ 19″, W 98° 1′ 26″ at OSM node n3695555172. 23 km flows in at N 18° 1′ 45″, W 98° 7′ 11″ at OSM node n4255094758. 20 km flows in at N 18° 10′ 5″, W 97° 57′ 14″ at OSM node n4255095379. 20 km flows in at N 18° 9′ 29″, W 97° 57′ 11″ at OSM node n4255095221. (unnamed) flows into Río Mixteco , which it joins at N 18° 4′ 53″, W 98° 18′ 39″ at OSM node n1227008601, and there 286 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• Río de San Vicente Boquerón, which joins it at N 18° 14′ 4″, W 98° 1′ 30″ at OSM node n2522770926, and 8 km of total upstream flows in.
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