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湯の湖

Tochigi, JapanView mapDirections

MOE publishes the water-quality measurements for 湯の湖. Here is what has been measured.

Clarity
3.2 m
Typical for Japan
Secchi · sampled 2024
Phosphorus
14 µg/L
Typical for Japan
Measured by MOE
  • Limited data

湯の湖 in Tochigi, Japan has official water-quality measurements, shown as reported. Water clarity: 3.2 m visibility. Phosphorus: 14 µg/L.

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How 湯の湖 is classified

湯の湖 in Japan is published with the authority's own measurements and class. The measurements here are published by the agency that samples the lake, as reported. Sampling here has recorded water clarity and phosphorus, but not algae (chlorophyll-a).

LakeQuality publishes no grade of its own beside it. Everything below thathas been measured is reported on this page.

Monitoring: the Ministry of the Environment (Japan).

湯の湖 is a lake in Tochigi County, Japan.

Source: the Ministry of the Environment (Japan) — not the EPA Water Quality Portal, last sampled 2024-11-15. Methodology: how these readings are compared.

What 湯の湖 is good for

From access and monitoring records, not editorial picks.

  • Clear water10.3 ft of visibility

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether 湯の湖 is safe to swim in today is a call for the Ministry of the Environment (Japan) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for 湯の湖

These are the measurements MOE publishes for 湯の湖. More on the source.

Good clarity, visible to about 10.3 ft. Phosphorus 14 µg/L. TSI 43.

Water quality readings
MeasureReadingWhere it sits
Water clarity (Secchi depth)3.15mMeasured, not scored

How deep a black-and-white disk stays visible from the surface. Higher is clearer.

Total phosphorus14µg/LMeasured, not scored

The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.

Chlorophyll-a (algae)No reading

The green pigment in algae — a direct measure of how much algae is in the water.

Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a.43Mesotrophic
OligotrophicMesotrophicEutrophicHypereutrophic

Moderate nutrients, good water quality

Ask about 湯の湖

Answers come straight from the public measurements and survey records on this page.

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Stays near 湯の湖

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Fishing 湯の湖

Frequently asked questions about 湯の湖

Where is 湯の湖?

湯の湖 is a lake in Tochigi, Japan. This page reports official water-quality measurements, shown as reported.

What is the water quality of 湯の湖?

湯の湖 in Tochigi, Japan has official water-quality measurements, shown as reported. Water clarity: 3.2 m visibility. Phosphorus: 14 µg/L.

Measurements on this page ↑

Is 湯の湖 safe to swim in?

湯の湖 has official nutrient and clarity measurements, not a bacteria swim class and not a safety clearance. Algal blooms, currents, and depth are not covered. Always check local notices before swimming.

Swimming on this page ↑

Where this data comes from

231 measurements from 7 monitoring stations, 2016–2024. Retrieved from Japan MOE public water-body monitoring (not the EPA Water Quality Portal) on 2026-08-16.

Collected and reported by

  • Ministry of the Environment (Japan)moe-jp231 samples · 2016–2024

Analytical methods

  • MOE public water body monitoring (kosui, lakes)
Monitoring station identifiers (7)
  • 0920030
  • 0920040
  • 0920050
  • 0920060
  • 0920070
  • 0920080
  • 0920090

Authority classifications are shown as the authority published them. See where the data comes from and data sources.