The Nagara River (長良川, Nagara-gawa) has its source in the city of Gujō, Gifu Prefecture, and its mouth in the city of Kuwana, Mie Prefecture, Japan.

In 1985, the middle section of the Nagara River was named to "Japan's 100 Famous Waters."

The river is also a popular tourist destination because of Nagaragawa Onsen, a collection of natural hot springs (mostly in the city of Gifu) that are known for their high iron content.

Other construction projects had previously changed the flow of the river, too.

As a result of this construction, about 160 ha (0.62 sq mi) of land was recovered, upon which the Gifu Memorial Center, schools, and other buildings were built.