성산천

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성산천 flows into 홍천강 , which it joins at N 37° 46′ 5″, E 127° 58′ 21″ at OSM node n5278365286, and there 201 km of total upstream flows in. load it's distributaries

성산천 has 3 tributaries.

• 야시대천, which joins it at N 37° 49′ 57″, E 127° 56′ 5″ at OSM node n5278366129, and 2 km of total upstream flows in.
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• (unnamed), which joins it at N 37° 50′ 28″, E 127° 55′ 51″ at OSM node n10115408580, and 964 m of total upstream flows in.
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• (unnamed), which joins it at N 37° 49′ 31″, E 127° 55′ 53″ at OSM node n5278365878, and 474 m of total upstream flows in.
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