大洞谷

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大洞谷 flows into 吉田川 , which it joins at N 35° 46′ 50″, E 137° 0′ 13″ at OSM node n726470556, and there 102 km of total upstream flows in. load it's distributaries

大洞谷 has 1 tributaries.

• (unnamed), which joins it at N 35° 45′ 49″, E 137° 0′ 56″ at OSM node n726330596, and 457 m of total upstream flows in.
load it's tributaries