(unnamed)

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(unnamed) flows into Ribeira do Calastrão , which it joins at N 38° 15′ 43″, W 7° 35′ 22″ at OSM node n2470917894, and there 20 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• Ribeira de Calastão, which joins it at N 38° 15′ 44″, W 7° 35′ 28″ at OSM node n6854043435, and 19 km of total upstream flows in.
load it's tributaries