ホロウツナイ川

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ホロウツナイ川 flows into 旧産化美唄川 , which it joins at N 43° 22′ 34″, E 141° 49′ 50″ at OSM node n1463443972, and there 21 km of total upstream flows in. load it's distributaries

ホロウツナイ川 has 1 tributaries.

• 十二号川, which joins it at N 43° 22′ 58″, E 141° 50′ 14″ at OSM node n1463445660, and 13 km of total upstream flows in.
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