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 Entry Archive >

Restoration of Shinano River (Niigata Prefecture)

In the middle basin of Shinano River, problems such as the simplified river channel, vanishing shallows and pools, change of high water channels into the land area and overgrowth of alien species such as robinia pseudoacacia have occurred because river improvement work focusing on flood control was promoted.
Now, however, a natural regeneration project is being conducted to restore the waterfront line (ecotone) and pools and recover the former channels. Also since July 2001, efforts have been made to increase the outflow from Nishiotaki Dam on a trial basis in cooperation with power generation companies. This is because the shallows are discontinued and algae proliferated abnormally due to a decrease in the river flow, which is caused by water intake for power generation and smoothing. While reviewing the effect and impact of an increase of the outflow on the downstream river environmental regeneration, we are improving the water environment adaptively and gradually.


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