LAKE HYOKO

Reduction of Sludge in the Reservoir Area in the City of Agano, Niigata, Japan

The reservoir was created in 1639 during the Edo period of Japanese history. It is noted for its abundant and diverse bird life, and is an important overwintering grounds for Whooper swans and Tundra swans. The area received protection from the Japanese government as a wildlife refuge in 2005, and in October 30, 2008, it was registered as a United Nation’s Ramsar Wetland site, which means that any activity on the lake has to be sensitive not to interfere with or damage the local environment or its wildlife. 

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