長岩谷川

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長岩谷川 flows into 黒田川 , which it joins at N 35° 31′ 7″, E 135° 53′ 3″ at OSM node n719755716, and there 4 km of total upstream flows in. load it's distributaries

長岩谷川 has 1 tributaries.

• (unnamed), which joins it at N 35° 31′ 3″, E 135° 52′ 47″ at OSM node n9220752931, and 314 m of total upstream flows in.
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