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Ogata Onsen

Ogata, Akita, Tohoku, Japan
Ogata Onsen
Location
Ogata, Akita, Tohoku, Japan
Water type
bicarbonate
Temperature
40 °C
pH
8

Water profile

Thermicity
Sedative
40 °C
LowHigh

Relaxing — deep, immediate muscle release.

Mineralisation
Restorative
LowHigh

Loaded with major ions — the essential minerals (Ca, Mg).

Buoyancy
Standard buoyancy
LowHigh

Soft water — natural, classic buoyancy.

BicarbonatesSodiumCalcium

Ogata Onsen serves one of Japan's most extraordinary planned communities — Ogata Village, built on land reclaimed from the former Lake Hachiro, which was systematically drained between 1957 and 1977 in one of the largest land reclamation projects in Japanese history, reducing a shallow coastal lake of 22,000 hectares to a small remnant and creating a vast flat agricultural plain at roughly 4 meters below sea level. The reclaimed land was distributed to farming families recruited from across Japan to establish a new agricultural community in a landscape engineered from scratch, creating an artificial town whose planned layout and below-sea-level position make it one of the most unusual communities in the Japanese archipelago. The tension between the ecological loss of a major coastal wetland — formerly Japan's second-largest lake and an important waterfowl habitat — and the agricultural value of the reclaimed land continues to shape the community's self-understanding and its relationship with the surrounding landscape, making Ogata a fascinating case study in the 20th century's ambitious but complicated effort to transform Japan's natural geography into maximally productive farmland.

Insider tip — Ogata Village in northern Akita was built on reclaimed land from the former Lake Hachiro, one of Japan's most dramatic postwar land engineering projects. Its onsen facility draws bicarbonate waters at 40°C from deep below the flat, windswept reclamation fields. The stark, open landscape stretching to the Sea of Japan horizon is unlike anywhere else in Japan.
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Frequently asked questions

How hot is the water?
The water runs quite hot here, around 40 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features bicarbonate water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).