La Côte-de-Beaupré County Lake Quality
Québec, 1 lakes, average grade B (Good)
La Côte-de-Beaupré County has 1 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, La Côte-de-Beaupré 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 la Retenue (B); the most-stressed is Lac la Retenue (B).
Quick Answers for La Côte-de-Beaupré County
Planning a trip? Check special fishing regulations for Lac la Retenue — or check the official Québec fishing regulations.
All Lakes in La Côte-de-Beaupré County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lac la Retenue | B | 8.4 ft | 10.4 µg/L |
Other Counties in Québec
See how La Côte-de-Beaupré 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.