La Haute-Côte-Nord County Lake Quality
Québec, 14 lakes, average grade A (Excellent)
Only 14 lakes in La Haute-Côte-Nord County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. On average, La Haute-Côte-Nord 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 Maclure (A); the most-stressed is Lac Saint-Onge (B).
Quick Answers for La Haute-Côte-Nord County
Planning a trip? Check special fishing regulations for Lac Maclure — or check the official Québec fishing regulations.
All Lakes in La Haute-Côte-Nord County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lac Maclure | A | 15.9 ft | 2.4 µg/L |
| 2 | Lac Gobeil | A | 22.1 ft | 1.8 µg/L |
| 3 | Lac Laval | A | 15.1 ft | 2.8 µg/L |
| 4 | Lac Polette | A | 14.4 ft | 3.9 µg/L |
| 5 | Lac des CèDres | A | 11.5 ft | 4.1 µg/L |
| 6 | Lac de L'Anse à L'Eau | A | 11.2 ft | 6.6 µg/L |
| 7 | Lac des Coeurs | A | 11.5 ft | 5.1 µg/L |
| 8 | RéServoir Pipmuacan | A | 12.1 ft | 3 µg/L |
| 9 | Lac des Piliers | A | 10.5 ft | 4.4 µg/L |
| 10 | Lac Boucher | B | 9.8 ft | 3.7 µg/L |
| 11 | Lac Cormier | B | 9.2 ft | 6.8 µg/L |
| 12 | Lac Fontaine | B | 9 ft | 3.7 µg/L |
| 13 | Lac Aux Perles | B | 8.2 ft | 7.2 µg/L |
| 14 | Lac Saint-Onge | B | 4.3 ft | 15.3 µg/L |
Other Counties in Québec
See how La Haute-Côte-Nord 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.