Kouvola, Finland
County page for 52 named lakes in Finland. 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 |
|---|---|---|---|---|---|
| Enäjärvi | Kouvola | 38 µg/L | 25 µg/L | 0.6 m | 2026 |
| Haapajärvi | Kouvola | 16 µg/L | 5.9 µg/L | 0.8 m | 2024 |
| Hangasjärvi | Kouvola | 19 µg/L | 5.4 µg/L | 1.1 m | 2026 |
| Huhdasjärvi | Kouvola | 4.7 µg/L | 4.0 µg/L | 2.6 m | 2021 |
| Iso Kortejärvi | Kouvola | 3.7 µg/L | 2.3 µg/L | 4.4 m | 2021 |
| Iso-Ruhmas Lake | Kouvola | 3.2 µg/L | 1.8 µg/L | 4.5 m | 2024 |
| Junkkarinjärvi | Kouvola | 185 µg/L | 275 µg/L | 0.3 m | 2024 |
| Karijärvi | Kouvola | 3.0 µg/L | 2.9 µg/L | 5.0 m | 2025 |
| Käyrälampi | Kouvola | 12 µg/L | 6.8 µg/L | 2.0 m | 2026 |
| Kerunki Lake | Kouvola | 9.1 µg/L | 8.6 µg/L | 2.1 m | 2025 |
| Keskimmäinen Lake | Kouvola | 6.5 µg/L | — | 1.4 m | 2025 |
| Kosjärvi | Kouvola | 33 µg/L | — | — | 2025 |
| Koskijärvi | Kouvola | 4.0 µg/L | 3.2 µg/L | 2.5 m | 2026 |
| Kyynelmyksenjärvi | Kouvola | 6.4 µg/L | 5.3 µg/L | 2.2 m | 2025 |
| Lappalanjärvi | Kouvola | 11 µg/L | 7.2 µg/L | 2.0 m | 2025 |
| Lovasjärvi | Kouvola | 3.8 µg/L | 3.0 µg/L | 3.6 m | 2026 |
| Märkjärvi | Kouvola | 11 µg/L | 5.5 µg/L | 0.9 m | 2024 |
| Matalajärvi | Kouvola | 7.5 µg/L | 3.3 µg/L | 2.5 m | 2016 |
| Mölöjärvi | Kouvola | 8.0 µg/L | — | 1.5 m | 2025 |
| Muhjärvi | Kouvola | 38 µg/L | 21 µg/L | 1.2 m | 2024 |
| Musta-Ruhmas Lake | Kouvola | 4.2 µg/L | 3.4 µg/L | 3.6 m | 2024 |
| Myntjärvi | Kouvola | 5.4 µg/L | 3.4 µg/L | 3.1 m | 2026 |
| Niemijärvi | Kouvola | 27 µg/L | — | 1.2 m | 2025 |
| Niskajärvi | Kouvola | 3.9 µg/L | 1.8 µg/L | 5.0 m | 2025 |
| Orijärvi | Kouvola | 15 µg/L | — | 1.9 m | 2025 |
| Palonselkä Lake | Kouvola | 22 µg/L | 12 µg/L | 0.7 m | 2025 |
| Pesäntäjärvi | Kouvola | 11 µg/L | 3.7 µg/L | 1.9 m | 2024 |
| Pieni-Murtonen Lake | Kouvola | 31 µg/L | 15 µg/L | 0.5 m | 2022 |
| Pyhäjärvi | Kouvola | 7.1 µg/L | 4.3 µg/L | 2.5 m | 2026 |
| Raajärvi | Kouvola | 7.0 µg/L | 2.8 µg/L | 2.0 m | 2025 |
| Rapojärvi-Haukkajärvi | Kouvola | 11 µg/L | 4.9 µg/L | 2.3 m | 2026 |
| Rättilänjärvi | Kouvola | 23 µg/L | 16 µg/L | 1.0 m | 2020 |
| Rautjärvi | Kouvola | 17 µg/L | 13 µg/L | 1.4 m | 2025 |
| Rautjärvi | Kouvola | 4.0 µg/L | 2.1 µg/L | 4.0 m | 2024 |
| Repovesi-Luujärvi | Kouvola | 5.9 µg/L | 2.8 µg/L | 3.0 m | 2026 |
| Saanjärvi | Kouvola | 7.0 µg/L | 1.6 µg/L | 5.0 m | 2023 |
| Saaramaanjärvi | Kouvola | 7.0 µg/L | 5.3 µg/L | 1.9 m | 2025 |
| Saarijärvi | Kouvola | 3.6 µg/L | 2.0 µg/L | 3.9 m | 2023 |
| Saittaranjärvi | Kouvola | 30 µg/L | 25 µg/L | 0.8 m | 2026 |
| Salmento Lake | Kouvola | 17 µg/L | 13 µg/L | 1.1 m | 2023 |
| Sanijärvi | Kouvola | 20 µg/L | 17 µg/L | 1.1 m | 2026 |
| Sompanen Lake | Kouvola | 20 µg/L | 11 µg/L | 1.6 m | 2025 |
| Sonnanjärvi | Kouvola | 3.9 µg/L | 3.1 µg/L | 4.0 m | 2022 |
| Suolajärvi | Kouvola | 4.4 µg/L | 2.7 µg/L | 4.5 m | 2024 |
| Suuri-Murtonen Lake | Kouvola | 34 µg/L | 23 µg/L | 0.5 m | 2022 |
| Tervajärvi | Kouvola | 3.9 µg/L | 2.8 µg/L | 3.1 m | 2026 |
| Teutjärvi | Kouvola | 120 µg/L | 60 µg/L | 0.2 m | 2025 |
| Vahvanen Aholanjärvi | Kouvola | 20 µg/L | 12 µg/L | 1.3 m | 2025 |
| Valkjärvi | Kouvola | 4.6 µg/L | 2.1 µg/L | 4.8 m | 2024 |
| Vekaranjärvi | Kouvola | 8.2 µg/L | 6.6 µg/L | 2.1 m | 2026 |
| Vuohijärvi | Kouvola | 3.9 µg/L | 1.6 µg/L | 4.5 m | 2026 |
| Ylimmäinen Lake | Kouvola | 22 µg/L | 9.7 µg/L | 1.2 m | 2024 |
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