Yu no Sawa Onsen; Ogawa no Yu
Ogawa, Nagano, Japan
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- Location
- Ogawa, Nagano, Japan
- Water type
- bicarbonate
- Temperature
- 40 °C
- pH
- 8
Water profile
Thermicity
Sedative
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
Yu no Sawa Onsen Ogawa no Yu, in the village of Ogawa (Nagano), has bicarbonate water with a pH of 8, heated to 40°C. An indoor bath, an outdoor rotenburo bath and a sauna are on site.
Insider tip — Ogawa-mura is one of Nagano most scenic villages, celebrated for its unobstructed panoramic views of the Hakuba and Northern Alps range stretching across the entire western horizon. The Ogawa no Yu spring at the base of terraced hills has refreshed the village for generations, set against this extraordinary alpine backdrop.
Nearby
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.