大洞川

大洞川 is 1 km long, and has a stream level of 3.

Map of 大洞川

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大洞川 flows into 藤沢川 , which it joins at N 35° 47′ 32″, E 137° 56′ 24″ at OSM node n748120048, and there 13 km of total upstream flows in.

大洞川 has 3 tributaries.

前沢川, which joins it at N 35° 47′ 34″, E 137° 56′ 17″ at OSM node n747999792, and 3 km of total upstream flows in.

(unnamed), which joins it at N 35° 47′ 33″, E 137° 56′ 1″ at OSM node n10901562072, and 760 m of total upstream flows in.

(unnamed), which joins it at N 35° 47′ 34″, E 137° 55′ 50″ at OSM node n12098180438, and 473 m of total upstream flows in.