Lakes in Gers, France
Find lakes in Gers: county page for 17 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 |
|---|---|---|---|---|---|
| Barrage de Candau | Gers | 39 µg/L | 5.9 µg/L | 0.6 m | 2022 |
| Barrage de la Baradée | Gers | 21 µg/L | 7.0 µg/L | 0.8 m | 2023 |
| Barrage de Lunax | Gers | 10 µg/L | 1.5 µg/L | 2.8 m | 2024 |
| Barrage de Saint-Jean | Gers | 57 µg/L | 11 µg/L | 0.2 m | 2022 |
| Barrage du Lizet | Gers | 27 µg/L | 7.9 µg/L | 0.6 m | 2020 |
| Barrage-Réservoir de L'Astarac | Gers | 20 µg/L | 4.0 µg/L | 1.2 m | 2024 |
| Lac D'Aous-Bernatas | Gers | 27 µg/L | 4.1 µg/L | 3.0 m | 2016 |
| Lac de Cahuzac-Sur-Adour | Gers | 23 µg/L | 9.0 µg/L | 3.6 m | 2022 |
| Lac de Castagnère | Gers | 39 µg/L | 3.0 µg/L | 0.9 m | 2022 |
| Lac de L'Uby | Gers | 50 µg/L | 19 µg/L | 0.6 m | 2022 |
| Lac de Lupiac | Gers | 18 µg/L | 1.4 µg/L | 2.1 m | 2024 |
| Lac de Miélan | Gers | 40 µg/L | 6.3 µg/L | 0.9 m | 2024 |
| Lac de Thoux-Saint-Cricq | Gers | — | 5.8 µg/L | 0.9 m | 2022 |
| Lac du Houga | Gers | 118 µg/L | 32 µg/L | 0.3 m | 2024 |
| Réservoir de Lapeyrie | Gers | — | 6.0 µg/L | 0.3 m | 2022 |
| Réservoir de Maribot | Gers | — | 29 µg/L | 0.4 m | 2022 |
| Réservoir du Bourgès | Gers | — | 2.0 µg/L | 0.7 m | 2022 |
Frequently asked questions
- How many named lakes are in Gers?
- 17 named lakes in Gers, France, have official phosphorus, chlorophyll-a, and Secchi, 2016–2024. Values are measurements, not a LakeQuality A–F grade.
- Does LakeQuality grade lakes in Gers?
- No. Gers pages show official phosphorus, chlorophyll-a, and Secchi from the publishing authority. A letter on the LakeQuality scale would be an invention.