홍성천

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홍성천 flows into 삽교천 , which it joins at N 36° 36′ 20″, E 126° 41′ 2″ at OSM node n4693120103, and there 52 km of total upstream flows in. load it's distributaries

홍성천 has 1 tributaries.

• 월계천, which joins it at N 36° 36′ 14″, E 126° 40′ 9″ at OSM node n4693120304, and 5 km of total upstream flows in.
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