Le Rocher-Percé County Lake Quality
Québec, 2 lakes, average grade A (Excellent)
Only 2 lakes in Le Rocher-Percé 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. The county's average grade is A — among the cleanest in Québec. 1 lakes pull an A on their own, and almost none fall into the D or F brackets.
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 des Sept ÎLes (A); the most-stressed is Lac Vachon (B).
Quick Answers for Le Rocher-Percé County
Planning a trip? Check special fishing regulations for Lac des Sept ÎLes — or check the official Québec fishing regulations.
All Lakes in Le Rocher-Percé County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lac des Sept ÎLes | A | - | 3.8 µg/L |
| 2 | Lac Vachon | B | 5.2 ft | 13.8 µg/L |
Other Counties in Québec
See how Le Rocher-Percé County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 38 states.
Where to stay near Le Rocher-Percé County
Top-rated places to stay near Le Rocher-Percé County
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Le Rocher-Percé County?
Get lake water-quality report cards plus the best cabin & lodging deals near Le Rocher-Percé County — straight to your inbox. No spam, unsubscribe anytime.
Source: EPA National Aquatic Resource Surveys, 2026.