November 30, 2022 "People who build dams" edition of Shinmaruyama Dam was added.
September 14, 2022 Senbon Dam reinforcement work was added to Completed records of dam construction.
May 18, 2022 Kawakami Dam introduction video was added. (Available only in Japanese)
January 26, 2022 Aigawa dam embankment completed.
December 16, 2021 Start of trial filling in Kawakami Dam
September 08, 2021 Shinmaruyama Dam live video of construction work was added.
April 20, 2021 Ceremony for completion of concrete placement at Kawakami Dam construction
February 05, 2021 Kawamata Dam live video of reinforcement construction work was added.
February 05, 2021 Bedrock PS anchors were added for dam renewal.
November 14, 2020 Foundation laying ceremony for Aigawa Dam Construction