Le Haut-Saint-François County Lake Quality
Québec, 3 lakes, average grade B (Good)
Only 3 lakes in Le Haut-Saint-François 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. With an average grade of B, Le Haut-Saint-François County sits comfortably above the Québec median.
Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Lac D'Argent (A) is the cleanest in the county.
Quick Answers for Le Haut-Saint-François County
Planning a trip? Check special fishing regulations for Lac D'Argent — or check the official Québec fishing regulations.
All Lakes in Le Haut-Saint-François County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lac D'Argent | A | 12.5 ft | 6.3 µg/L |
| 2 | Lac Miroir | A | 12.1 ft | 8.2 µg/L |
| 3 | Lac Louise | B | 4.6 ft | 13.1 µg/L |
Other Counties in Québec
See how Le Haut-Saint-François 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.