大平山川

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大平山川 flows into 石瀬戸川 , which it joins at N 31° 57′ 40″, E 131° 8′ 17″ at OSM node n742735906, and there 7 km of total upstream flows in. load it's distributaries

大平山川 has 1 tributaries.

• 青木川, which joins it at N 31° 58′ 16″, E 131° 8′ 30″ at OSM node n742963917, and 938 m of total upstream flows in.
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