今井川

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今井川 flows into 砂川 , which it joins at N 34° 48′ 20″, E 134° 0′ 59″ at OSM node n751693984, and there 38 km of total upstream flows in. load it's distributaries

今井川 has 2 tributaries.

• 石井川, which joins it at N 34° 49′ 1″, E 134° 1′ 34″ at OSM node n4558029593, and 2 km of total upstream flows in.
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• (unnamed), which joins it at N 34° 49′ 3″, E 134° 2′ 4″ at OSM node n751345391, and 644 m of total upstream flows in.
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