Portneuf County Lake Quality
Québec, 23 lakes, measured by MELCCFP
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. The 23 monitored lakes in Portneuf County carry whatever clarity, phosphorus, and chlorophyll-a readings MELCCFP has published, shown as reported.
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.
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Quick Answers for Portneuf County
Planning a trip? Check special fishing regulations for Lac Sergent — or check the official Québec fishing regulations.
All Lakes in Portneuf County
23 lakes · 0 ranked on readings, 23 without enough sampling0 lakes ranked on readings · 23 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|
| Lac SergentPortneuf | 11.2 ft | 8.6 µg/L | 5.2 µg/L | No recent samples | Not recorded | |
| Lac BleuPortneuf | 10.8 ft | 8 µg/L | 2.9 µg/L | No recent samples | Not recorded | |
| Lac SimonPortneuf | 13.8 ft | 3.5 µg/L | 1.3 µg/L | No recent samples | Not recorded | |
| Lac AlainPortneuf | 6.7 ft | 7.8 µg/L | 6.4 µg/L | No recent samples | Not recorded | |
| Lac CarillonPortneuf | 13.3 ft | 4.8 µg/L | 3 µg/L | No recent samples | Not recorded | |
| Lac de L'OasisPortneuf | 5.9 ft | 12.3 µg/L | 2.7 µg/L | No recent samples | Not recorded | |
| Lac BlancPortneuf | 11.5 ft | 6.6 µg/L | 2.9 µg/L | No recent samples | Not recorded | |
| Lac MontaubanPortneuf | 12.6 ft | 6.4 µg/L | 3.1 µg/L | No recent samples | Not recorded | |
| Lac LongPortneuf | 13.8 ft | 6 µg/L | 2.8 µg/L | No recent samples | Not recorded | |
| Lac PerreaultPortneuf | 7.5 ft | 6.1 µg/L | 3.1 µg/L | No recent samples | Not recorded | |
| Lac ÉMeraudePortneuf | 23.5 ft | 2.6 µg/L | 1.1 µg/L | No recent samples | Not recorded | |
| Lac Sainte-AnnePortneuf | 12 ft | 5.3 µg/L | 1.9 µg/L | No recent samples | Not recorded | |
| Lac ClairPortneuf | 26.6 ft | 2.5 µg/L | 1 µg/L | No recent samples | Not recorded | |
| Lac à L'AnguillePortneuf | 17.7 ft | 3.6 µg/L | 1.1 µg/L | No recent samples | Not recorded | |
| Lac Aux CèDresPortneuf | 11.2 ft | 5.4 µg/L | 1.6 µg/L | No recent samples | Not recorded | |
| Lac TraversPortneuf | 9.8 ft | 5 µg/L | 1.7 µg/L | No recent samples | Not recorded | |
| Le Gros LacPortneuf | 14.8 ft | 5 µg/L | 1.9 µg/L | No recent samples | Not recorded | |
| Lac à la HachePortneuf | 4.6 ft | 10.2 µg/L | 2.3 µg/L | No recent samples | Not recorded | |
| Lac RitaPortneuf | 27.6 ft | 5.4 µg/L | 1.8 µg/L | No recent samples | Not recorded | |
| Lac MorassePortneuf | 9.5 ft | 6.3 µg/L | 2 µg/L | No recent samples | Not recorded | |
| Lac VertPortneuf | 13.5 ft | 5.8 µg/L | 5.2 µg/L | No recent samples | Not recorded | |
| Lac de la FermePortneuf | 9.5 ft | 7.1 µg/L | 1.8 µg/L | No recent samples | Not recorded | |
| Lac Sept ÎLesPortneuf | 11.8 ft | 7.3 µg/L | 4.2 µg/L | No recent samples | Not recorded |
NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.
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Source: le Ministère de l'Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs. See data sources.