Le Val-Saint-François County Lake Quality
Québec, 10 lakes, average grade B (Good)
Only 10 lakes in Le Val-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 Val-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 Stukely (A) is the cleanest in the county.
Quick Answers for Le Val-Saint-François County
Planning a trip? Check special fishing regulations for Lac Stukely — or check the official Québec fishing regulations.
All Lakes in Le Val-Saint-François County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lac Stukely | A | 19.4 ft | 3.4 µg/L |
| 2 | Lac Montjoie | A | 14.9 ft | 6.1 µg/L |
| 3 | Petit Lac Brompton | A | 15.7 ft | 7.6 µg/L |
| 4 | Lac Desmarais | B | 8.5 ft | 12.7 µg/L |
| 5 | Lac Miller | B | 9.5 ft | 7.9 µg/L |
| 6 | Lac Brais | B | 9.2 ft | 11.9 µg/L |
| 7 | Lac Boissonneault | B | 4.9 ft | 17.3 µg/L |
| 8 | Spooner Pond | B | 7.1 ft | 20 µg/L |
| 9 | Lac Denison | C | 5.2 ft | 24.7 µg/L |
| 10 | Petit Lac Saint-FrançOis | F | 2.3 ft | 161.1 µg/L |
Other Counties in Québec
See how Le Val-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.