Memphrémagog County Lake Quality
Québec, 25 lakes, average grade A (Excellent)
There are 25 graded lakes in Memphrémagog County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. On average, Memphrémagog County lakes grade an A. That puts it near the top of the Québec county ranking.
The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Lac Simoneau (A); the most-stressed is ÉTang Aux Cerises (B).
Quick Answers for Memphrémagog County
Planning a trip? Check special fishing regulations for Lac Simoneau — or check the official Québec fishing regulations.
All Lakes in Memphrémagog County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lac Simoneau | A | 17.2 ft | 4.2 µg/L |
| 2 | Lac Bowker | A | 28.7 ft | 1.9 µg/L |
| 3 | Lac Malaga | A | 16.6 ft | 6.3 µg/L |
| 4 | Lac Gilbert | A | 21.5 ft | 5.6 µg/L |
| 5 | Lac Fraser | A | 15.4 ft | 5.5 µg/L |
| 6 | Lac Orford | A | 22.6 ft | 2.6 µg/L |
| 7 | Lac Massawippi | A | 12.8 ft | 5.6 µg/L |
| 8 | Lac Nick | A | 13 ft | 8.7 µg/L |
| 9 | Lac des Monts | A | 10.5 ft | 9.5 µg/L |
| 10 | Lac Lovering | A | 13.1 ft | 7.2 µg/L |
| 11 | Lac Peasley | A | 11.2 ft | 6.5 µg/L |
| 12 | Lac Long Pond | A | 13.8 ft | 9.1 µg/L |
| 13 | Lac Trousers | A | 10.7 ft | 9.3 µg/L |
| 14 | Lac des Sittelles | A | 13.8 ft | 4.4 µg/L |
| 15 | ÉTang O'Malley | A | 14.1 ft | 8.1 µg/L |
| 16 | Lac Brompton | A | 12.3 ft | 5.9 µg/L |
| 17 | Lac à la Truite | A | 13.1 ft | 8.3 µg/L |
| 18 | Lac des FrançAis | B | 9.8 ft | 9.3 µg/L |
| 19 | Lac Bran de Scie | B | 8.5 ft | 11.3 µg/L |
| 20 | Lac Leclerc | B | 9.8 ft | 9.3 µg/L |
| 21 | ÉTang Mckey | B | 9.8 ft | 11.6 µg/L |
| 22 | Lac D'Argent | B | 9.5 ft | 8.5 µg/L |
| 23 | ÉTang George | B | 6.6 ft | 12 µg/L |
| 24 | ÉTang Aux Cerises | B | 5.9 ft | 11.9 µg/L |
| 25 | Lac Parker | B | 4.8 ft | 16.2 µg/L |
Other Counties in Québec
See how Memphrémagog County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 38 states.
Where to stay near Memphrémagog County
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Source: EPA National Aquatic Resource Surveys, 2026.