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Updated: April 2, 2018

Hamura Intake Weir 羽村取水堰

3-8-32 Hane Higashi Hamura-shi Tokyo

Tokyo's water source

You may want to thank Hamura Intake Weir on Tama River for its continued water supply to Tokyo since 1963. The weir takes in a large amount of water and discharges 2 square meters every second. When heavy rain or typhoons bring the water level up, the beams of the weir are removed so that water can flow downstream automatically. The water collected at this dam flows to Maruyama and Yamaguchi Reservoirs.

Hamura Weir is located in a wide open area. Take advantage of the beauty of its vicinity and have a picnic at the grassy area nearby. You can see cherry blossoms here in spring as well.

How to Get There

  • Hamura Sta. | 10 mins on foot
    JR Ome Line



Opening Hours

  • See official website/local tourist information office

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