(unnamed)

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(unnamed) flows into the sea: 3 km flows in at N 33° 24′ 29″, E 130° 41′ 17″ at OSM node n745448802. 3 km flows in at N 33° 23′ 51″, E 130° 40′ 52″ at OSM node n745381576. 757 m flows in at N 33° 24′ 32″, E 130° 42′ 37″ at OSM node n745471961. (unnamed) has 2 distributaries.

• 佐田川 , which it joins at N 33° 25′ 30″, E 130° 43′ 15″ at OSM node n745491722, and 39 km of total upstream flows in. load it's distributaries
• 荷原川 , which it joins at N 33° 24′ 0″, E 130° 42′ 55″ at OSM node n745532414, and 6 km of total upstream flows in. load it's distributaries

(unnamed) has 0 tributaries.