성동천

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성동천 flows into 홍천강 , which it joins at N 37° 41′ 44″, E 127° 50′ 54″ at OSM node n4184366269, and there 341 km of total upstream flows in. load it's distributaries

성동천 has 2 tributaries.

• (unnamed), which joins it at N 37° 41′ 56″, E 127° 51′ 7″ at OSM node n4184366311, and 7 km of total upstream flows in.
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• 간성천, which joins it at N 37° 44′ 28″, E 127° 52′ 39″ at OSM node n5278579105, and 2 km of total upstream flows in.
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