To everyone viewing the submerged forest at Akiogi Lake (Yoroihata Dam Lake)

To everyone viewing the submerged forest at Akiogi Lake (Yoroihata Dam Lake)

Update date: March 17, 2026

Tazawako area

Large-scale improvement work is scheduled at the Yoroihata Power Plant from March 2027 to January 2032. During this period, due to changes in the reservoir water level, the view of the submerged forest, which is usually very popular, will not be available. Fiscal year 2026 will be the last opportunity to view the submerged forest before the construction begins. We appreciate your understanding and cooperation.

Contact information for inquiries regarding construction work

Akita Prefecture Tamagawa Power Plant Office

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