平古場川

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平古場川 flows into 松浦川 , which it joins at N 33° 13′ 59″, E 129° 58′ 3″ at OSM node n717192603, and there 58 km of total upstream flows in. load it's distributaries

平古場川 has 2 tributaries.

• 内田川, which joins it at N 33° 13′ 58″, E 129° 58′ 34″ at OSM node n717194124, and 3 km of total upstream flows in.
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• (unnamed), which joins it at N 33° 14′ 12″, E 129° 59′ 14″ at OSM node n717195173, and 147 m of total upstream flows in.
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