Prealpine lakes, Italy
Place page for 7 named lakes in Italy. Official surface phosphorus, chlorophyll-a, and Secchi — not a swim-safety class and not a LakeQuality letter.
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Named lakes
| Lake | Place | Total phosphorus | Chlorophyll-a | Secchi | Year |
|---|---|---|---|---|---|
| Idroscalo | Milan | 7.0 µg/L | — | 2.2 m | 2018 |
| Lago di Como | Lecco | 12 µg/L | — | 5.8 m | 2021 |
| Lago di Garda | Verona | 8.0 µg/L | 2.2 µg/L | 8.1 m | 2025 |
| Lago di Idro | Brescia | 13 µg/L | — | 4.0 m | 2021 |
| Lago di Iseo | Brescia | 11 µg/L | — | 4.0 m | 2021 |
| Lago di Lugano | Varese | 13 µg/L | — | 4.5 m | 2021 |
| Lago Maggiore | Varese | 5.5 µg/L | 2.3 µg/L | 5.8 m | 2020 |
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