(unnamed)

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(unnamed) flows into the sea: 101 km flows in at S 18° 51′ 4″, E 44° 21′ 13″ at OSM node n4502335093. (unnamed) flows into Soahanina , which it joins at the following points: 322 km of total upstream flows in at S 18° 48′ 16″, E 44° 17′ 58″ at OSM node n888893105 269 km of total upstream flows in at S 18° 48′ 8″, E 44° 18′ 59″ at OSM node n11111408897 load it's distributaries

(unnamed) has 2 tributaries.

• Beboka, which joins it at S 18° 47′ 29″, E 44° 38′ 11″ at OSM node n888584199, and 78 km of total upstream flows in.
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• Miharano, which joins it at S 18° 49′ 20″, E 44° 31′ 41″ at OSM node n888584148, and 74 km of total upstream flows in.
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