Harju, Estonia
County page for 11 named lakes in Estonia. 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 |
|---|---|---|---|---|---|
| Harku Järv | Harju | 130 µg/L | 125 µg/L | 0.3 m | 2024 |
| Kahala Järv | Harju | 47 µg/L | 9.1 µg/L | 1.1 m | 2024 |
| Klooga Järv | Harju | 31 µg/L | 4.5 µg/L | 1.5 m | 2024 |
| Lohja Järv | Harju | 98 µg/L | 29 µg/L | 0.6 m | 2025 |
| Maardu Järv | Harju | 46 µg/L | 13 µg/L | 2.1 m | 2025 |
| Männiku Järv | Harju | 20 µg/L | 3.6 µg/L | 3.0 m | 2024 |
| Paunküla Veehoidla | Harju | 25 µg/L | 6.6 µg/L | 3.0 m | 2021 |
| Raku Järv | Harju | 34 µg/L | 10 µg/L | 2.5 m | 2021 |
| Rummu Järv | Harju | 11 µg/L | 1.0 µg/L | 8.8 m | 2024 |
| Tänavjärv | Harju | 23 µg/L | 10 µg/L | 1.1 m | 2025 |
| Ülemiste Järv | Harju | 36 µg/L | 24 µg/L | 0.7 m | 2021 |
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