(unnamed)

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(unnamed) flows into Arroyo Machico , which it joins at S 40° 36′ 53″, W 71° 34′ 52″ at OSM node n4508530755, and there 32 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• Arroyo Pedregoso, which joins it at S 40° 37′ 3″, W 71° 34′ 53″ at OSM node n4515479778, and 11 km of total upstream flows in.
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