Photo of Kasuga Onsen
Photo information
Soren Bradley with Topographic - NASA Shuttle Radar Topography Mission (SRTM3) Admin ,Hillside - Geospatial Information Authority of Japan , https://nlftp.mlit. CC BY 4.0 View original page

Hokuriku & Koshinetsu · Onsen area

Kasuga Onsen

かすがおんせん · 春日温泉

Nagano · 佐久市

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Official classification

Spring type (therapeutic classes)

Official spring-type name (as recorded)アルカリ性単純温泉

Source temperature
25–41°C
pH
9.6
Flow rate
Unconfirmed
Radon
Unconfirmed

Appearance & feel

Water colour · Feel

Clear

Colour and feel are listed only where a source states them. They vary by day and by bath.

This area has basic information only. In-depth articles are being added.

Facilities in this area

Facilities come from the register (Wikipedia, OpenStreetMap, official sites). Those marked "natural spring unconfirmed" are listed on the basis of their name only.

No facility information yet.

Getting there

Public transport unconfirmed

アクセスの項を参照

Checked
no check date

Visitor reviews

No reviews yet. While the review platform is being prepared, we do not display fictional reviews or ratings.

Review posting is in preparation, with visit date, facility, comments on water, scenery and access, photos, language and reporting.

Register sources

Data status

Name & locationPublishedCoordinatesPublishedSpring typePublishedPhotosPublishedFacilitiesIn preparationVisiting info (dated)In preparationEditorial articleIn preparation

Updated 2026-10-09

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