La Matapédia County Lake Quality
Québec, 14 lakes, average grade A (Excellent)
Only 14 lakes in La Matapédia 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. 9 lakes pull an A on their own, and almost none fall into the D or F brackets.
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 Humqui (A) is the cleanest in the county.
Quick Answers for La Matapédia County
Planning a trip? Check special fishing regulations for Lac Humqui — or check the official Québec fishing regulations.
All Lakes in La Matapédia County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lac Humqui | A | 17.7 ft | 5.4 µg/L |
| 2 | Lac MatapéDia | A | 15.1 ft | 5.4 µg/L |
| 3 | Lac Huit Mille | A | 23.1 ft | 3.9 µg/L |
| 4 | Lac Saint-Pierre | A | 16.4 ft | 2.7 µg/L |
| 5 | Lac Angus | A | 19 ft | 4.9 µg/L |
| 6 | Lac du QuinzièMe Mille | A | 17.7 ft | 3.7 µg/L |
| 7 | Lac Casault | A | 19.4 ft | - |
| 8 | Lac Au Saumon | A | 11.5 ft | 9.3 µg/L |
| 9 | Lac à Pitre | A | 11.2 ft | 7 µg/L |
| 10 | Lac des Huit Milles | B | 9.8 ft | 7.9 µg/L |
| 11 | Lac Rouge | B | 9.4 ft | 10.4 µg/L |
| 12 | Lac Indien | B | 6.9 ft | 9.6 µg/L |
| 13 | Lac de Saint-Damase | C | 4.6 ft | 19.6 µg/L |
| 14 | Lac Michaud | C | 5.2 ft | 19.9 µg/L |
Other Counties in Québec
See how La Matapédia 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 La Matapédia County
Top-rated places to stay near La Matapédia 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 La Matapédia County?
Get lake water-quality report cards plus the best cabin & lodging deals near La Matapédia County — straight to your inbox. No spam, unsubscribe anytime.
Source: EPA National Aquatic Resource Surveys, 2026.