괴산댐
괴산댐 in Unknown, South Korea has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 18 µg/L. Chlorophyll-a (algae): 3 µg/L.
Why 괴산댐 has no A–F grade
괴산댐 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 phosphorus and algae (chlorophyll-a), but not water clarity.
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).
괴산댐 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 괴산댐
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 18 µg/L. Chlorophyll-a: 3 µg/L. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 18 µg/L | Not graded |
| Chlorophyll-a (Algae) | 3 µg/L | Not graded |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near 괴산댐
Compare lakeside cabins, hotels, and vacation rentals near 괴산댐 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 괴산댐
Frequently asked questions about 괴산댐
What is the water quality of 괴산댐?
- 괴산댐 in Unknown, South Korea has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 18 µg/L. Chlorophyll-a (algae): 3 µg/L.
Is 괴산댐 safe to swim in?
- 괴산댐 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 괴산댐 across LakeGrade
More lakes in South Korea
Where this data comes from
590 measurements from 3 monitoring stations, 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-kr590 samples · 2016–2025
Analytical methods
- NIER national water-quality network (호소 surface chemistry)
Monitoring station identifiers (3)
1004B101004B201004B30
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See how grades are calculated and data sources.