外山川

外山川 is 13 km long, and has a stream level of 2.

Map of 外山川

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外山川 flows into 米内川 , which it joins at N 39° 44′ 30″, E 141° 16′ 11″ at OSM node n754143467, and there 40 km of total upstream flows in.

外山川 has 3 tributaries.

大石川, which joins it at N 39° 47′ 6″, E 141° 20′ 10″ at OSM node n754458106, and 2 km of total upstream flows in.

(unnamed), which joins it at N 39° 45′ 28″, E 141° 15′ 45″ at OSM node n754196108, and 2 km of total upstream flows in.

(unnamed), which joins it at N 39° 46′ 29″, E 141° 17′ 21″ at OSM node n754103518, and 1 km of total upstream flows in.