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Video Library

Yanba Dam - Naganohara, Agatsuma District, Gunma Prefecture, Japan

Watch a video of pipe laying work for regular use flood discharge pipes

** Provided by Yanba Dam Construction Office, Ministry of Land, Infrastructure, Transport and Tourism (temporary)

Purpose of facility

Yanba Dam is a multipurpose dam at Naganohara, Agatsuma District, Gunma Prefecture on Agatsumagawa River, a tributary of the Tone River. It secures a new mains water and industrial water supply and offers power generation while providing flood control and maintaining the normal water flow.
Construction is still under way and should be completed in 2019.

Outline of construction project

[Model] Main gate: High-pressure radial gate
Reserve gate: High-pressure slide gate
[Dimensions] Main gate: 4.85 m clear span x 4.85 m effective height
Reserve gate: 7.525 m clear span x 8.162 m effective height
[Number of Gates] 2

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