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Shiromaru Dam

Travel Guide - Shiromaru Dam


In the upstream region of Hatonosu-keikoku Valley sits Shiromaru Dam, which was constructed in 1963 and holds back the Tama-gawa River. The dam has a underground facility called "Gyodo" where you can watch passing school of fish from the Tama-gawa River to the dam lake.
Further upstream from the dam lake is Kazuma-kyo Gorge. One of Okutama's most peaceful valleys, the area is very popular among fishers.

Opening HoursOpening Hours

  • Gyodo: 10:00 - 16:00 (April - November)


  • Gyodo: Irregular (April - November)
  • Gyodo: December - March

Price / Entrance FeePrice / Entrance Fee

  • Admission Free

Access / Public TransportAccess / Public Transport

  • 10 minutes walk from JR Shiromaru Station

Address / LocationAddress / Location

  • Tanazawa, Okutama-machi Nishitama-gun, Tokyo, 198-0106


Tokyo Fox 🦊 (東京狐) @tokyofox - 2018-07-13
Shiromaru Dam Fish Ladder was ladder, constructed in 2002, is 330m in length and drops 27m. It is Japan’s longest f… https://t.co/FGjlEQ6VSf
CheeseSniffer @CheeseSniffer - 2017-05-03
11:25, destination reached... sort of. The last bit of path was blocked. Lake shiromaru, tiny dam reservoir. Time t… https://t.co/5K2jfQfUwD


Basic information about traveling to Shiromaru Dam.
Opening Hours
Opening hours of Shiromaru Dam.
Closed days or periods of Shiromaru Dam.
Price / Entrance Fee
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Access / Public Transport
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Related Links
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Address / Location
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