Albufeira Caldeirao
Albufeira Caldeirao in Unknown, Portugal has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 11 µg/L.
Why Albufeira Caldeirao has no A–F grade
Albufeira Caldeirao in Portugal 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, but not water clarity 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 Portuguese Environment Agency (APA), via UNEP GEMS/Water.
Albufeira Caldeirao is a lake in Unknown County, Portugal.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2023-12-05. Grade methodology: LakeGrade methodology.
Watch Albufeira Caldeirao water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Albufeira Caldeirao
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 11 µg/L. Trophic State Index: 39.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 11 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 39 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Albufeira Caldeirao
Compare lakeside cabins, hotels, and vacation rentals near Albufeira Caldeirao in Unknown, Portugal — 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.
Top-rated places to stay near Albufeira Caldeirao
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Fishing Albufeira Caldeirao
Frequently asked questions about Albufeira Caldeirao
What is the water quality of Albufeira Caldeirao?
- Albufeira Caldeirao in Unknown, Portugal has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 11 µg/L.
Is Albufeira Caldeirao safe to swim in?
- Albufeira Caldeirao 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 Albufeira Caldeirao across LakeGrade
More lakes in Portugal
Where this data comes from
47 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
europeanenvironmentagenc47 samples · —
Analytical methods
- GEMStat OPEN / CC BY 4.0
Monitoring station identifiers (1)
PRT00047
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: 2023-12-05
Monitoring stations: 1