Dam Koprinka
Dam Koprinka in Unknown, Bulgaria has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 2.2 m visibility. Phosphorus: 35.5 µg/L. Chlorophyll-a (algae): 15.2 µg/L.
- Clarity
- 2.2 m
Why Dam Koprinka has no A–F grade
Dam Koprinka in Bulgaria 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 Executive Environment Agency of Bulgaria, via UNEP GEMS/Water.
Dam Koprinka is a lake in Unknown County, Bulgaria.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2023-11-28. 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 Dam Koprinka
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Moderate clarity, visible to about 7.2 ft. Phosphorus level: 35.5 µg/L. Chlorophyll-a: 15.2 µg/L. Trophic State Index: 54.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.2 m | Not graded |
| Phosphorus | 35.5 µg/L | Not graded |
| Chlorophyll-a (Algae) | 15.2 µg/L | Not graded |
| Trophic State Index (TSI) | 54 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Dam Koprinka
Compare lakeside cabins, hotels, and vacation rentals near Dam Koprinka in Unknown, Bulgaria — 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 Dam Koprinka
Frequently asked questions about Dam Koprinka
What is the water quality of Dam Koprinka?
- Dam Koprinka in Unknown, Bulgaria has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 2.2 m visibility. Phosphorus: 35.5 µg/L. Chlorophyll-a (algae): 15.2 µg/L.
Is Dam Koprinka safe to swim in?
- Dam Koprinka 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
34 measurements from 1 monitoring station, 2016–2023. Retrieved from UNEP GEMS/Water GFQA (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- European Environment Agency
europeanenvironmentagenc34 samples · —
Analytical methods
- GEMStat OPEN / CC BY 4.0
Monitoring station identifiers (1)
BGR00132
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See methodology and data sources.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2023-11-28
Monitoring stations: 1