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


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Restoration of Aka River (Tsuruoka City, Yamagata Prefecture)

As for Aka River running through Yamagata Prefecture and flowing into the Japan Sea, the number of migratory fish including oncorhynchus masou has decreased which is caused by migration prevention due to the groundsill and the disappearance of deep pools, which provide a valuable habitat. Along with the thick growth of trees such as Robinia pseudoacacia, the bar area is decreasing and the riparian part shrinking, thus the river landscape unique to Aka River has been lost.
For this reason, a nature regeneration project including the improvement of fish passes and Robinia pseudoacacia extermination tests is being conducted to secure the continuity of the river, conserve and create the river environment and regenerate the original nature of Aka River.


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