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Updated: October 1, 2019
As one of the largest drinking water reservoirs in Japan, Ogouchi Reservoir holds about 189 million tons of water to supply the people of Tokyo. The 149-meter-high and 353-meter-long structure wasn’t completed without hardship--nearly 90 people died during its construction.
You will see Tamagawa River at the foot of the reservoir, and not far away is Mount Mitake, long held sacred by residents of the area. Visit the observation tower for stunning views of the water. If you're active, take the Mt. Mitake Rock Garden route and trek through moss-covered stones, waterfalls, and fresh mountain streams. Wear a bear bell if possible--black bears are found in this area.
For updated information on opening hours, closings, prices, and more, please check the official website or ask the facility directly.
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