ポンイワナイ川

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ポンイワナイ川 flows into ウンジョウヤ川 , which it joins at N 42° 58′ 34″, E 140° 30′ 59″ at OSM node n1451529534, and there 16 km of total upstream flows in. load it's distributaries

ポンイワナイ川 has 1 tributaries.

• (unnamed), which joins it at N 42° 58′ 37″, E 140° 32′ 39″ at OSM node n1451529914, and 1 km of total upstream flows in.
load it's tributaries