 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.Downstream, the Nagara River converges and diverges with the Kiso and Ibi rivers at multiple times.Though the Nagara River is considered part of the Kiso River system, various construction projects over the years have kept the two rivers separate all the way to the mouth of the river.