(unnamed)

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(unnamed) flows into Río de la Plata , which it joins at S 34° 2′ 18″, W 58° 20′ 41″ at OSM node n7773231272, and there 387,917 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• Arroyo de las Vacas, which joins it at S 34° 0′ 30″, W 58° 18′ 10″ at OSM node n7773209305, and 186 km of total upstream flows in.
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