項内川

項内川 is 8 km long, and has a stream level of 2.

Map of 項内川

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項内川 flows into 三川目川 , which it joins at N 40° 28′ 47″, E 141° 9′ 21″ at OSM node n753859970, and there 63 km of total upstream flows in.

項内川 has 3 tributaries.

水沢, which joins it at N 40° 28′ 31″, E 141° 7′ 48″ at OSM node n753697133, and 5 km of total upstream flows in.

(unnamed), which joins it at N 40° 28′ 38″, E 141° 8′ 34″ at OSM node n753329753, and 3 km of total upstream flows in.

(unnamed), which joins it at N 40° 28′ 52″, E 141° 7′ 32″ at OSM node n753991623, and 1 km of total upstream flows in.