Сумнагын

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Сумнагын flows into Алдан , which it joins at N 58° 50′ 58″, E 127° 37′ 34″ at OSM node n330433794, and there 13,523 km of total upstream flows in. load it's distributaries

Сумнагын has 2 tributaries.

• (unnamed), which joins it at N 59° 15′ 36″, E 127° 12′ 37″ at OSM node n6224534856, and 7 km of total upstream flows in.
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• Долкиткон, which joins it at N 58° 52′ 31″, E 127° 35′ 45″ at OSM node n4722967730, and 2 km of total upstream flows in.
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