주남저수지
주남저수지 in Unknown, South Korea has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 0.5 m visibility. Phosphorus: 69.5 µg/L. Chlorophyll-a (algae): 40.2 µg/L.
- Clarity
- 0.5 m
Why 주남저수지 has no A–F grade
주남저수지 in South Korea is published with the authority's own measurements, not a LakeQuality letter. official authority class; not a LakeQuality A–F letter Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).
A letter on the LakeQuality scale would be an invention, not an official class. Everything below that has been measured is still reported on this page.
Monitoring: the National Institute of Environmental Research (Korea).
주남저수지 is a lake in Unknown County, South Korea.
Source: the National Institute of Environmental Research (Korea) — not the EPA Water Quality Portal, last sampled 2025-12-15. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for 주남저수지
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Very murky, less than 1.6 ft of visibility. Phosphorus level: 69.5 µg/L. Chlorophyll-a: 40.2 µg/L. Trophic State Index: 67.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.5 m | Not graded |
| Phosphorus | 69.5 µg/L | Not graded |
| Chlorophyll-a (Algae) | 40.2 µg/L | Not graded |
| Trophic State Index (TSI) | 67 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near 주남저수지
Compare lakeside cabins, hotels, and vacation rentals near 주남저수지 in Unknown, South Korea — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
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Fishing 주남저수지
Frequently asked questions about 주남저수지
What is the water quality of 주남저수지?
- 주남저수지 in Unknown, South Korea has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 0.5 m visibility. Phosphorus: 69.5 µg/L. Chlorophyll-a (algae): 40.2 µg/L.
Is 주남저수지 safe to swim in?
- 주남저수지 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.
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Where this data comes from
353 measurements from 1 monitoring station, 2016–2025. Retrieved from the listed programme (not the EPA Water Quality Portal). See data sources on 2026-08-20.
Collected and reported by
- National Institute of Environmental Research (Korea)
nier-kr353 samples · 2016–2025
Analytical methods
- NIER national water-quality network (호소 surface chemistry)
Monitoring station identifiers (1)
2020B10
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See how grades are calculated and data sources.