上古丹12号川

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上古丹12号川 flows into 上古丹川 , which it joins at N 44° 5′ 42″, E 143° 15′ 3″ at OSM node n1476323347, and there 28 km of total upstream flows in. load it's distributaries

上古丹12号川 has 1 tributaries.

• (unnamed), which joins it at N 44° 5′ 39″, E 143° 15′ 19″ at OSM node n1476322765, and 835 m of total upstream flows in.
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