Сумна-Сян

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Сумна-Сян flows into Сигмоян , which it joins at N 68° 32′ 10″, E 101° 45′ 59″ at OSM node n1714326866, and there 27 km of total upstream flows in. load it's distributaries

Сумна-Сян has 1 tributaries.

• Амбардах, which joins it at N 68° 31′ 10″, E 101° 41′ 30″ at OSM node n3143434048, and 3 km of total upstream flows in.
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