Overview
The Kiso Three Rivers is the collective name for the Kiso, Nagara, and Ibi rivers, the three great streams that flow across the Nōbi Plain. All three empty into Ise Bay, and given their location they are also called the Nōbi Three Rivers. Running side by side in close proximity, they create a vast waterside landscape of a scale rare in Japan, and they have long sustained the life and history of the plain's inhabitants. Led by the Kiso River, which begins in Nagano Prefecture, they carry water gathered from the upstream mountains to the lowlands, nurturing rich farmland and a region defined by its waterscapes.
Highlights
- ●The grand waterside landscape of the Kiso, Nagara, and Ibi rivers running side by side
- ●A flood-control history marked by the Hōreki project and de Rijke's separation works
- ●The rich farmland and waterscapes spread across the Nōbi Plain
- ●Views of all three rivers from the area where they draw closest together
History
In their lower reaches the Kiso Three Rivers once merged and divided repeatedly, frequently causing severe floods. From the Edo period onward, flood-control works were carried out again and again. The most famous are the Hōreki flood-control project undertaken by the Satsuma domain and the separation works that divided the three rivers, led in part by the Dutch engineer Johannis de Rijke. These arduous projects convey the enduring efforts of people who faced the unruly rivers, symbolizing the history of a Nōbi Plain that has lived alongside water.
Access
The three rivers run side by side mainly in the lower Nōbi Plain, near where the borders of Gifu, Aichi, and Mie prefectures meet. Where the rivers draw closest together the waterside scenery opens up, and some nearby vantage points let you take in all three at once. Because the upstream Kiso River flows down from Nagano Prefecture, the starting point for access differs greatly by section. Check official sources for details on visitor facilities and lookout conditions.
Best season
The fresh greenery of early summer, when open waters and farmland are in harmony, and clear autumn days with crisp air are especially recommended. From spring through autumn, waterside strolls and cycling are pleasant, offering grand views of the rivers running in parallel. Summer sun is strong, so stay hydrated and guard against heat; winter winds sweeping the plain are cold, so dress warmly for your visit.
Map
35.2800, 136.6500 · Wikidata
Suggested itinerary
- 1Start at the waterside area of the Nōbi Plain where the rivers converge
- 2Take in the parallel flow of the Kiso, Nagara, and Ibi from a lookout
- 3Enjoy the water-country scenery on waterside paths or by bicycle
- 4Learn the story of the three rivers at an interpretive facility on flood-control history
Did you know?
💡 The works that separated the Kiso Three Rivers left behind the story of the Hōreki flood-control project, undertaken at great sacrifice by the distant Satsuma domain in Kyushu and handed down among local people. The involvement of the Dutch engineer de Rijke and others in modern river improvement also tells of how Japan's flood-control technology drew on knowledge from across the seas. The sight of three great rivers flowing close together is a landscape shaped by nature and human effort over long years.
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