Lakes With Algae Readings in Québec
12 lakes in Québec report elevated algae levels (chlorophyll-a above 20 µg/L). These lakes are most likely to develop blue-green algae blooms during warm, calm summer weather. Avoid swimming during visible blooms and rinse pets after contact.
Ranked List
| # | Lake | County | Clarity | Phosphorus | Algae | |
|---|---|---|---|---|---|---|
| 1 | Lac Bleu | Rouville | — | 1.1 ft | 165 µg/L | 82.4 µg/L |
| 2 | Petit Lac Saint-FrançOis | Le Val-Saint-François | — | 2.3 ft | 161.1 µg/L | 77.8 µg/L |
| 3 | Lac Saint-Charles | Bellechasse | — | 1 ft | 94.2 µg/L | 69.7 µg/L |
| 4 | Lac à Vaillancourt | Rimouski-Neigette | — | 4.9 ft | 63.7 µg/L | 56.4 µg/L |
| 5 | Lac Roxton | La Haute-Yamaska | — | 3.8 ft | 56.7 µg/L | 36.4 µg/L |
| 6 | Lac Mandeville | D'Autray | — | 3.9 ft | 28.7 µg/L | 34 µg/L |
| 7 | Lac de la Belle Montagne | Matawinie | — | 3.9 ft | 31.1 µg/L | 27.5 µg/L |
| 8 | Lac Lindsay | Coaticook | — | 3.9 ft | 37.1 µg/L | 26.2 µg/L |
| 9 | Lac Aux Canards | Bellechasse | — | 2.6 ft | 29.2 µg/L | 22.3 µg/L |
| 10 | Lac Pelletier | Abitibi-Témiscamingue | — | 7.5 ft | 39.4 µg/L | 22.3 µg/L |
| 11 | Lac Waterloo | La Haute-Yamaska | — | 4.3 ft | 33 µg/L | 21.1 µg/L |
| 12 | Lac Bill | Maskinongé | — | 4.3 ft | 21 µg/L | 20.9 µg/L |
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