is a river located in the

Yamanashi Prefecture is a prefecture of Japan located in the Chūbu region of Honshu. Yamanashi Prefecture has a population of 787,592 (1 February 2025) and has a geographic area of 4,465 km2 (1,724 sq mi). Yamanashi Prefecture borders Saitama Prefecture to the n ...

of Japan. It is a tributary of the

Fuji River The is a river in Yamanashi Prefecture, Yamanashi and Shizuoka Prefectures of central Japan. It is long and has a drainage basin, watershed of . With the Mogami River and the Kuma River (Japan), Kuma River, it is regarded as one of the three mos ...

Geography

The Fuefuki River has its source the neighboring mountains of Mount Kobushi on the southern slope of Mount Kobushi in the north of Yamanashi, on

Honshu , historically known as , is the largest of the four main islands of Japan. It lies between the Pacific Ocean (east) and the Sea of Japan (west). It is the list of islands by area, seventh-largest island in the world, and the list of islands by ...

, in

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

. Its course takes a southeast direction to the Hirose dam then south, in the east of Yamanashi. Leaving Yamanashi, it successively crosses the northwest of

Fuefuki file:Ichinomiya asama-jinja.jpg, 270px, Ichinomiya Asama Shrine is a Cities of Japan, city in Yamanashi Prefecture, Japan. , the city had an estimated population of 67,300 in 30,408 households, and a population density of 340 persons per km2. The ...

to which it gives its name, south of

Kōfu is the capital Cities of Japan, city of Yamanashi Prefecture, Japan. , the city had an estimated population of 187,985 in 90,924 households, and a population density of 880 persons per km2. The total area of the city is . Overview Toponymy Kōfu ...

, central Chūō and the northwest of the town of

Ichikawamisato is a List of towns of Japan, town located in Yamanashi Prefecture, Japan. , the town had an estimated population of 15,799 in 6679 households., and a population density of 210 persons per km². The total area of the town is . Geography Ichika ...

. Near the boundary between Ichikawamisato and Fujikawa, the Fuefuki and Kamanashi rivers converge and form the

. The watershed of the Fuefuki River covers an area of in the northwest of Yamanashi prefecture.

References

Rivers of Yamanashi Prefecture Rivers of Japan {{Japan-river-stub