Photo: Douggers · CC BY 3.0 · Wikimedia Commons

Nagaragawa Onsen

Gifu · 長良川温泉

Nagaragawa Onsen is a hot spring town in Gifu, Japan. The water leaves the ground at 16°C, cool enough that the baths here are usually reheated. It measures pH 6.6 — close to neutral. Officially the water is classed as iron spring. Its sources put out around 1,000 litres a minute.

Iron spring

The water here

Iron spring 含鉄泉

Turns reddish brown as the iron meets air. The water is clear at the source.

The numbers

Water temperature: 16°C
pH: 6.6 (close to neutral)
Discharge: 1,000 litres a minute
Address in Japanese: 岐阜県岐阜市

Figures from the town's Japanese Wikipedia article.

Where it is

35.4414, 136.7831 — open the map

Read more

English Wikipedia · Japanese Wikipedia

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Planning a first soak? Read how an onsen stay works, and what to do if you have tattoos.