Asian River Restoration Network (ARRN)

The Asian River Restoration Network was established in Nov. 2006 to support the exchange of information relating to environmental restoration of rivers and watersheds. JRRN has a role of ARRN secretariat currently.

Go to ARRN website

Contact us (Secretariat)

Lofty Chuoh Bldg., 7th Flr.

17-24, Shinkawa 1cho-me, Chuo-ku, Tokyo 104-0033, JAPAN

Foundation for Riverfront Improvement and Restoration
Tel: +81-3-6228-3860
Fax: +81-3-3523-0640


< World's WATERFRONT:JAPAN Category: Navigation restoration >

Restoration of Uzuma River (Tochigi City, Tochigi Prefecture)

Uzuma River was so contaminated that it was named the second-most contaminated river in Japan.
However, the clear stream was recovered through water quality improvement measures and the adoption of the Hometown River Model Project. Also a comfortable water environment and living climate has been regenerated, where transportation by ship has restarted and 100,000 carps swim. In this way, local regeneration rooted in history and culture has been realized.
Today, Uzuma River is evaluated as a tourist spot with the historical landscape of Tochigi city, designated as one of the 100 best city landscapes in Japan. It also won the "Public Color Award - 10 environmental colors" in 2003 and the grand prize of the "Handmade Hometown Award" in 2005.

Restoration of Hachiman River (Omihachiman City, Shiga Prefecture)

When Hidetsugu Toyotomi opened a castle town at the base of Mt. Hachiman, the "Hachiman Moat" running through Omihachiman City was built as a canal to allow barges running in Biwa Lake, which was the artery at the time, call into Hachiman.
Due to the rapid urban development after the war, the water environment of Hachiman River was deteriorated and in the decade starting in 1965, a land reclamation plan was embodied. However, activities toward dredging and regeneration of the moat were started mainly by citizen groups who considered the moat to be historical heritage from their ancestors. Such activities are continued even today to maintain the landscape of the moat and improve the water quality by the "Citizens' Association to Protect Hachiman Moat."
Although transportation by ship has ended, ships are still used by tourists in imitation of the traditional elegant boating of the Imperial Court. Today this has become a special feature of sightseeing tours and 280,000 people visit this area yearly. Hachiman River was designated as one of the best 100 revived waters in Japan.

Restoration of Shingashi River (Kawagoe City, Saitama Prefecture)

Since the beginning of the Edo Period, ships have sailed Shingasi River transporting people and goods and it also served the cultural role of connecting Kawagoe and Edo closely. However, such a role was weakened along with the opening of the railways. Also the volume of the river water became insufficient due to river improvement work for flood prevention. Thus, transportation by ship was discontinued in the beginning of the Showa Period.
Today, there is an attempt to revive transportation by ship on Shingasi River to promote tourism, and a social experiment of transportation by ship for tourists is being conducted in the water area near streets with the atmosphere of Edo in central Kawagoe City.

Restoration of Hitachitone River (Itako City, Ibaraki Prefecture)

Itako City, together with Sahara City located in the south of Tone River, flourished as a transshipping port to convey products of each clan of Oshu to Edo.
 Today we can enjoy attractive scenery unique to a "riverside district" as a tourist town typified by small ships coming and going on the water and boatwomen.
 Itako boating station with a 2,000m course using the straight river area is highly evaluated as a waterfront for social interaction. It won the "Handmade Hometown Award" in 1986.

Restoration of Yodo River (Osaka City, Osaka)

In Yodo River running through Osaka, earth and sand are deposited around the spur dike, which was built to maintain the course for cargo ships, and many pools and valuable habitats for organisms have been created. However, because the water level fluctuation has decreased as a result of the construction of Yodo River Great Weir downstream, its environmental impact on Johoku pools is a concern.
For this reason, an experiment toward the recovery of the pool environment is being conducted by improving the operation of the weir to increase the water level fluctuation and improve the in-pool water quality.