Lakes in Finistère, France
Find lakes in Finistère: county page for 3 named lakes in France. 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 |
|---|---|---|---|---|---|
| Retenue de Saint Michel | Finistère | — | 4.5 µg/L | 1.0 m | 2025 |
| Retenue du Drennec | Finistère | 10 µg/L | 4.0 µg/L | 3.4 m | 2025 |
| Retenue du Moulin Neuf | Finistère | 20 µg/L | 10 µg/L | 1.5 m | 2023 |
Frequently asked questions
- How many named lakes are in Finistère?
- 3 named lakes in Finistère, France, have official phosphorus, chlorophyll-a, and Secchi, 2023–2025. Values are measurements, not a LakeQuality A–F grade.
- Does LakeQuality grade lakes in Finistère?
- No. Finistère pages show official phosphorus, chlorophyll-a, and Secchi from the publishing authority. A letter on the LakeQuality scale would be an invention.