Bellechasse County Lake Quality
Québec, 9 lakes, average grade B (Good)
Bellechasse County has 9 graded lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. With an average grade of B, Bellechasse County sits comfortably above the Québec median.
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 CrèVe-Faim (A); the most-stressed is Lac Saint-Charles (F).
Quick Answers for Bellechasse County
Planning a trip? Check special fishing regulations for Lac CrèVe-Faim — or check the official Québec fishing regulations.
All Lakes in Bellechasse County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lac CrèVe-Faim | A | 11.8 ft | 9.3 µg/L |
| 2 | Lac Therrien | A | - | 10.6 µg/L |
| 3 | Lac Mailloux | B | 9.2 ft | 10.4 µg/L |
| 4 | Lac Dion | B | 5.2 ft | 13.8 µg/L |
| 5 | Lac Pierre-Paul | B | 4.4 ft | 11.1 µg/L |
| 6 | Lac Vert | B | 4.9 ft | 14.3 µg/L |
| 7 | Lac Beaumont | C | 3 ft | 22.6 µg/L |
| 8 | Lac Aux Canards | D | 2.6 ft | 29.2 µg/L |
| 9 | Lac Saint-Charles | F | 1 ft | 94.2 µg/L |
Other Counties in Québec
See how Bellechasse County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 38 states.
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Source: EPA National Aquatic Resource Surveys, 2026.