Cavan, Ireland
County page for 16 named lakes in Ireland. 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 |
|---|---|---|---|---|---|
| Lough Acurry | Cavan | 27 µg/L | 2.3 µg/L | — | 2022 |
| Lough Annagh | Cavan | 28 µg/L | 4.2 µg/L | — | 2022 |
| Lough Ardan | Cavan | 32 µg/L | 3.8 µg/L | — | 2022 |
| Lough Atrain | Cavan | 50 µg/L | 17 µg/L | — | 2022 |
| Lough Bawn | Cavan | 46 µg/L | 1.6 µg/L | — | 2022 |
| Lough Corglass | Cavan | 44 µg/L | 3.5 µg/L | — | 2023 |
| Lough Derrybrick | Cavan | 26 µg/L | 6.9 µg/L | — | 2019 |
| Lough Drumkeery | Cavan | 38 µg/L | 12 µg/L | — | 2022 |
| Lough Farnharn | Cavan | 170 µg/L | 2.5 µg/L | — | 2022 |
| Lough Macnean Upper | Cavan | 23 µg/L | 7.6 µg/L | — | 2023 |
| Lough Mill | Cavan | 34 µg/L | 3.1 µg/L | — | 2022 |
| Lough Mushlin | Cavan | 22 µg/L | 5.3 µg/L | — | 2023 |
| Lough Oughter South | Cavan | 56 µg/L | 5.8 µg/L | — | 2022 |
| Lough Sheelin | Cavan | 21 µg/L | 4.3 µg/L | — | 2023 |
| Lough Skeagh Upper | Cavan | 37 µg/L | 19 µg/L | — | 2023 |
| Lower Lough Macnean | Cavan | 27 µg/L | 6.8 µg/L | — | 2023 |
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