Rimouski-Neigette County Lake Quality
Québec, 12 lakes, average grade B (Good)
Rimouski-Neigette County has 12 graded lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. The county-wide average lands at B — solid water quality with most lakes carrying clear summer transparency and low-to-moderate phosphorus.
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 Ferré (A) is the cleanest in the county.
Quick Answers for Rimouski-Neigette County
Planning a trip? Check special fishing regulations for Lac Ferré — or check the official Québec fishing regulations.
All Lakes in Rimouski-Neigette County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lac Ferré | A | 17.6 ft | 4.2 µg/L |
| 2 | Lac Noir | A | 15.4 ft | 6.7 µg/L |
| 3 | Lac à Gasse | A | - | 11.1 µg/L |
| 4 | Lac Plourde | B | 11.3 ft | 11 µg/L |
| 5 | Lac Neigette | B | 10.3 ft | 9.9 µg/L |
| 6 | Grand Lac Shaw | B | 9.8 ft | 8.8 µg/L |
| 7 | Lac à la Truite | B | 7.1 ft | 12.7 µg/L |
| 8 | Lac à L'Anguille | B | 8.2 ft | 18.9 µg/L |
| 9 | Lac de la Pelle | C | 7.2 ft | - |
| 10 | Lac des Joncs | C | 9.5 ft | - |
| 11 | Lac à Vaillancourt | D | 4.9 ft | 63.7 µg/L |
| 12 | Grand Lac MalobèS | F | 2.6 ft | - |
Other Counties in Québec
See how Rimouski-Neigette 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.