現在、静岡、長野、山梨の3県にまたがって流れる富士川は日本三大急流の1つとして知られ、古代より交通の難所であった。江戸期に盛んになった富士川舟運は、河口に近い岩淵河岸と甲斐の鰍沢、青柳、黒沢の河岸を結んでいた。Fuji River, which at present runs through Shizuoka, Nagano and Yamanashi prefectures is known to be one of the three fastest rivers in Japan and a difficult route for transport since olden times. Maritime transport on the Fuji River, which thrived during the Edo Period, connected Iwabuchi near the mouth of the river with the banks of Akisawa in Kai, Aoyagi and Kurosawa