Lakes in Oulu, Finland
Find lakes in Oulu: county page for 30 named lakes in Finland. Official surface phosphorus, chlorophyll-a, and Secchi, shown as the authority reports them; none is a swim-safety class.
Lake map
Map shows 30 lakes with coordinates
Named lakes
| Lake | Place | Total phosphorus | Chlorophyll-a | Secchi | Year |
|---|---|---|---|---|---|
| Ahmasjärvi | Oulu | 21 µg/L | — | 0.5 m | 2025 |
| Haapajärvi | Oulu | 285 µg/L | 260 µg/L | 0.2 m | 2021 |
| Haapalampi | Oulu | 6.1 µg/L | 1.5 µg/L | 3.0 m | 2017 |
| Halajärvi | Oulu | 27 µg/L | 10 µg/L | 1.0 m | 2018 |
| Hämeenjärvi | Oulu | 12 µg/L | 3.1 µg/L | 1.8 m | 2016 |
| Heikkilänjärvi | Oulu | 28 µg/L | 34 µg/L | 1.6 m | 2016 |
| Iso Juuvanjärvi | Oulu | 16 µg/L | — | — | 2026 |
| Iso Viitajärvi | Oulu | 26 µg/L | 36 µg/L | 1.4 m | 2026 |
| Iso-Vuotunki Lake | Oulu | 50 µg/L | 6.5 µg/L | 0.8 m | 2021 |
| Jäälinjärvi | Oulu | 39 µg/L | 15 µg/L | 0.5 m | 2026 |
| Jolosjärvi | Oulu | 58 µg/L | 34 µg/L | 0.5 m | 2024 |
| Juopulinjärvi | Oulu | 48 µg/L | 34 µg/L | 0.6 m | 2026 |
| Kalimeenlampi | Oulu | 49 µg/L | 17 µg/L | 0.4 m | 2023 |
| Karahkanjärvi | Oulu | 31 µg/L | 59 µg/L | 1.0 m | 2020 |
| Koutuanjärvi | Oulu | 80 µg/L | 50 µg/L | 0.5 m | 2021 |
| Kuivasjärvi | Oulu | 76 µg/L | 20 µg/L | 0.6 m | 2026 |
| Loukkojärvi | Oulu | 35 µg/L | 16 µg/L | 0.8 m | 2021 |
| Loukkojärvi | Oulu | 61 µg/L | 54 µg/L | 0.6 m | 2026 |
| Lylykkäänjärvi | Oulu | 15 µg/L | 13 µg/L | 1.4 m | 2025 |
| Niilesjärvi | Oulu | 72 µg/L | 46 µg/L | 0.5 m | 2026 |
| Nurmijärvi | Oulu | 43 µg/L | 14 µg/L | 0.3 m | 2022 |
| Onkamonjärvi | Oulu | 21 µg/L | 7.0 µg/L | 0.7 m | 2023 |
| Papinjärvi | Oulu | 18 µg/L | 7.8 µg/L | 1.8 m | 2024 |
| Pilpajärvi | Oulu | 40 µg/L | 19 µg/L | 0.6 m | 2021 |
| Pyykösjärvi | Oulu | 22 µg/L | 14 µg/L | 1.1 m | 2026 |
| Tervajärvi | Oulu | 27 µg/L | 14 µg/L | 0.6 m | 2023 |
| Uikulanjärvi | Oulu | 31 µg/L | 247 µg/L | 0.3 m | 2022 |
| Valkiaisjärvi | Oulu | 7.9 µg/L | 3.9 µg/L | 2.6 m | 2024 |
| Vepsänjärvi | Oulu | 76 µg/L | 52 µg/L | 0.6 m | 2025 |
| Ylä-Koutuanjärvi | Oulu | 74 µg/L | 54 µg/L | 0.5 m | 2025 |
Frequently asked questions
- How many named lakes are in Oulu?
- 30 named lakes in Oulu, Finland, have official phosphorus, chlorophyll-a, and Secchi, 2016–2026. Values are the authority's measurements, shown as reported.
- Where do the Oulu readings come from?
- Oulu pages show official phosphorus, chlorophyll-a, and Secchi from the publishing authority, with the year each was taken.
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