The is a river in Japan which flows through

Gifu Prefecture is a prefecture of Japan located in the Chūbu region of Honshu. Gifu Prefecture has a population of 1,991,390 () and has a geographic area of . Gifu Prefecture borders Toyama Prefecture to the north; Ishikawa Prefecture to the northwest, F ...

, and empties into the

Nagara River The has its source in the city of Gujō, Gifu Prefecture, and its mouth in the city of Kuwana, Mie Prefecture, Japan. Along with the Kiso River and Ibi River, the Nagara River is one of the Kiso Three Rivers of the Nōbi Plain. Previously, ...

Geography

The river flows from the city of

Motosu Usuzumizakura is a city located in Gifu, Japan. , the city had an estimated population of 34,453 in 12, 464 households, and a population density of 390 persons per km2. The total area of the city was . Geography Motosu is located in western Gi ...

, where it takes water from the

Neo River The is a river in Japan which flows through Gifu Prefecture, and is part of the Kiso River system. North of Ōno, the river is also called the . Geography The river originates on Mount Nōgōhaku, which lies on the border of Gifu and Fukui p ...

and flows south. After running through Hozumi and

Ōgaki Ōgaki Castle is a city located in Gifu, Japan. , the city had an estimated population of 161,539, and a population density of 782 persons per km2 in 65,931 households. The total area of the city was . Ōgaki was the final destination for the h ...

, it runs parallel to the Nagara River, which it joins in Anpachi. The

cherry blossom A cherry blossom, also known as Japanese cherry or sakura, is a flower of many trees of genus ''Prunus'' or ''Prunus'' subg. ''Cerasus''. They are common species in East Asia, including China, Korea and especially in Japan. They generally ...

s on the banks of the river near

Sunomata Castle 250px, Tenshu is a Japanese castle in Ōgaki in Gifu Prefecture at the confluence of the Sai and Nagara rivers. It is also called the , due to the legend that it was built in one night. The castle was constructed by Toyotomi Hideyoshi, at the ...

are well known and are included on a list of the top 33 cherry blossom sites in Gifu Prefecture.

History

*1530: A large flood shifted the main branch of the original

to its current route. This same flood created the Sai River. *1641: A fight broke out between the owners of the Mushiroda Canal (席田用水 ''Mushiroda Yōsui'') and the Makuwa Canal (真桑用水 ''Makuwa Yōsui'') over water usage from the Sai River. The dispute was settled with the Mushiroda Canal taking 60% of the flow and the Makuwa Canal taking the remaining 40%. *1929: The

Sai River Incident Sai or SAI may refer to: Companies * Science Applications Incorporated, original name of Leidos * ICAO designator for Shaheen Air, a Pakistani airline * Skandinavisk Aero Industri, a former Danish aeroplane manufacturer * Software Architects, In ...

occurred when residents demonstrated against the prefectural governor for plans to alter the flow of the river.

References

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