Papineau County Lake Quality
Québec, 33 lakes, average grade A (Excellent)
Papineau County's 33 graded lakes fall in the moderate-density bracket for Québec. The county-level average smooths over real differences — a single agricultural watershed near the southwest corner can pull the average down even if the rest of the county runs clean. On average, Papineau County lakes grade an A. That puts it near the top of the Québec county ranking.
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 Vert (A); the most-stressed is Lac Aux Brochets (B).
Quick Answers for Papineau County
Planning a trip? Check special fishing regulations for Lac Vert — or check the official Québec fishing regulations.
All Lakes in Papineau County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lac Vert | A | 26.6 ft | 3.5 µg/L |
| 2 | Lac Vert | A | 28.9 ft | 4 µg/L |
| 3 | Lac Viceroy | A | 29.5 ft | 3.9 µg/L |
| 4 | Lac Simon | A | 21 ft | 2.6 µg/L |
| 5 | Lac Gagnon | A | 21.7 ft | 2.6 µg/L |
| 6 | Petit Lac Preston | A | 18 ft | 2.9 µg/L |
| 7 | Lac de L'Orignal | A | 15.7 ft | 4.8 µg/L |
| 8 | Lac Doré | A | 15.4 ft | 4.4 µg/L |
| 9 | Lac BarrièRe | A | 15.9 ft | 3.2 µg/L |
| 10 | Lac Hawk | A | 23.6 ft | 3.1 µg/L |
| 11 | Lac Smallian | A | 18 ft | 3.2 µg/L |
| 12 | Lac des Plages | A | 17.4 ft | 4.4 µg/L |
| 13 | Lac Lady | A | 27.6 ft | 2.3 µg/L |
| 14 | Lac Lafontaine | A | 28.2 ft | 1.8 µg/L |
| 15 | Lac Morin | A | 21.3 ft | 4.9 µg/L |
| 16 | Lac Au Loup | A | 20 ft | 5.4 µg/L |
| 17 | Lac Daoust | A | 19.2 ft | 5.1 µg/L |
| 18 | Lac Farrand | A | 15.3 ft | 6.3 µg/L |
| 19 | Lac Papineau | A | 21.7 ft | 3.8 µg/L |
| 20 | Lac Charette | A | 18.7 ft | 4.5 µg/L |
| 21 | Lac des ÎLes | A | 17.9 ft | 5.9 µg/L |
| 22 | Lac Hacquard | A | 13.8 ft | 5 µg/L |
| 23 | Lac Hotte | A | 12.8 ft | 9.6 µg/L |
| 24 | Lac Iroquois | A | 11.2 ft | 4 µg/L |
| 25 | Lac Schryer | A | 11.8 ft | 6 µg/L |
| 26 | Lac des ÎLes | A | 10.2 ft | 9.4 µg/L |
| 27 | Lac la Blanche | A | 13.8 ft | 7.7 µg/L |
| 28 | Lac de L'Argile | A | 13.5 ft | 7.1 µg/L |
| 29 | Lac du Poisson Blanc | A | 13.5 ft | 4.7 µg/L |
| 30 | Lac Lemery | A | 13 ft | 9.7 µg/L |
| 31 | Lac de la Mine D'Or | A | 11.6 ft | 9 µg/L |
| 32 | Lac Saint-Sixte | A | 13.5 ft | 4 µg/L |
| 33 | Lac Aux Brochets | B | 8.2 ft | 9.3 µg/L |
Other Counties in Québec
See how Papineau 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.