尾瀬沼
Fukushima, JapanView mapDirections
MOE publishes the water-quality measurements for 尾瀬沼. Here is what has been measured.
- Limited data
尾瀬沼 in Fukushima, Japan has official water-quality measurements, shown as reported. Water clarity: 3.5 m visibility. Phosphorus: 10 µg/L.
How 尾瀬沼 is classified
尾瀬沼 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).
尾瀬沼 is a lake in Fukushima County, Japan.
Source: the Ministry of the Environment (Japan) — not the EPA Water Quality Portal, last sampled 2024-10-15. Methodology: how these readings are compared.
What 尾瀬沼 is good for
From access and monitoring records, not editorial picks.
- Clear water11.5 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether 尾瀬沼 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.
Water quality measurements for 尾瀬沼
These are the measurements MOE publishes for 尾瀬沼. More on the source.
Good clarity, visible to about 11.5 ft. Phosphorus 10 µg/L. TSI 40.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.5m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 10µg/L | Measured, 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. | 40 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about 尾瀬沼
Answers come straight from the public measurements and survey records on this page.
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Fishing 尾瀬沼
Frequently asked questions about 尾瀬沼
Where is 尾瀬沼?
- 尾瀬沼 is a lake in Fukushima, Japan. This page reports official water-quality measurements, shown as reported.
What is the water quality of 尾瀬沼?
- 尾瀬沼 in Fukushima, Japan has official water-quality measurements, shown as reported. Water clarity: 3.5 m visibility. Phosphorus: 10 µg/L.
Is 尾瀬沼 safe to swim in?
- 尾瀬沼 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.
Explore 尾瀬沼 across LakeQuality
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Where this data comes from
20 measurements from 1 monitoring station, 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-jp20 samples · 2016–2024
Analytical methods
- MOE public water body monitoring (kosui, lakes)
Monitoring station identifiers (1)
0720010
Authority classifications are shown as the authority published them. See where the data comes from and data sources.