Northern Portugal, Portugal
Region page for 12 named lakes in Portugal. Official surface phosphorus, chlorophyll-a, and Secchi — not a swim-safety class and not a LakeQuality letter.
Lake map
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Named lakes
| Lake | Place | Total phosphorus | Chlorophyll-a | Secchi | Year |
|---|---|---|---|---|---|
| Albufeira Aguieira | — | 14 µg/L | — | — | 2023 |
| Albufeira Alto Lindoso | — | 9.0 µg/L | — | — | 2023 |
| Albufeira Caldeirao | — | 11 µg/L | — | — | 2023 |
| Albufeira Castelo Bode | — | 5.9 µg/L | — | — | 2023 |
| Albufeira Fratel | — | 130 µg/L | — | — | 2023 |
| Albufeira Fronhas | — | 10 µg/L | — | — | 2023 |
| Albufeira Miranda | — | 40 µg/L | — | — | 2023 |
| Albufeira Paradela | — | 6.0 µg/L | — | — | 2023 |
| Albufeira Pocinho | — | 40 µg/L | — | — | 2023 |
| Albufeira Pracana | — | 13 µg/L | — | — | 2023 |
| Albufeira Salamonde | — | 6.0 µg/L | — | — | 2023 |
| Albufeira Vilarinho Das Furnas | — | 5.0 µg/L | — | — | 2023 |
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