Valga, Estonia
County page for 6 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 |
|---|---|---|---|---|---|
| Aheru Järv | Valga | 44 µg/L | 25 µg/L | 1.1 m | 2023 |
| Ähijärv | Valga | 32 µg/L | 12 µg/L | 1.9 m | 2025 |
| Köstrijärv | Valga | 33 µg/L | 6.9 µg/L | 1.6 m | 2024 |
| Nõuni Järv | Valga | 22 µg/L | 3.6 µg/L | 4.2 m | 2021 |
| Pühajärv | Valga | 29 µg/L | 7.6 µg/L | 2.7 m | 2025 |
| Tündre Järv | Valga | 28 µg/L | 8.5 µg/L | 1.9 m | 2023 |
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