東砂古谷川

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東砂古谷川 flows into 下倉谷川 , which it joins at N 34° 42′ 30″, E 133° 39′ 51″ at OSM node n751041093, and there 3 km of total upstream flows in. load it's distributaries

東砂古谷川 has 1 tributaries.

• (unnamed), which joins it at N 34° 42′ 17″, E 133° 40′ 14″ at OSM node n751086196, and 26 m of total upstream flows in.
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