Le Fjord-du-Saguenay County, Québec · Water Quality Report Card
Lac Vert
Lac Vert in Le Fjord-du-Saguenay, Québec received a water quality grade of D (Poor). Water clarity: 0.6 m visibility. Phosphorus: 39.6 µg/L. Chlorophyll-a (algae): 11 µg/L.
- Clarity
- 0.6 m
- Type
- Eutrophic
Lac Vert is a productive, nutrient-rich eutrophic lake in Le Fjord-du-Saguenay County, Québec. Water quality is graded D based on 3 sampling years through 2025. Compared to the 22 other monitored lakes in Le Fjord-du-Saguenay County, Lac Vert ranks #23 for water quality.
Source: EPA Water Quality Portal sampling records, MELCCFP, last sampled 2025-08-01. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Very murky, less than 2 ft of visibility. Phosphorus level: 39.6 µg/L. Chlorophyll-a: 11 µg/L. Trophic State Index: 60.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.6 m | F |
| Phosphorus | 39.6 µg/L | C |
| Chlorophyll-a (Algae) | 11 µg/L | C |
| Trophic State Index (TSI) | 60 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lac Vert
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Fishing Lac Vert
Location
County Ranking
Ranked #23 of 23 lakes in Le Fjord-du-Saguenay
Cleaner Lakes Within 30 Miles
Lac Vert holds Grade D. 5 nearby lakes hold higher grades.
- ALac de L'Aqueduc de Saint-BrunoLac-Saint-Jean-Est · 12 mi · Two grade letters higher (D → A)
- ALac LouvierLac-Saint-Jean-Est · 12.6 mi · Two grade letters higher (D → A)
- ALac SéBastienLe Fjord-du-Saguenay · 12.7 mi · Two grade letters higher (D → A)
- BLac LabrecqueLac-Saint-Jean-Est · 8.9 mi · Two grade letters higher (D → B)
- BLac AmbroiseLe Fjord-du-Saguenay · 0.4 mi · Two grade letters higher (D → B)
Nearby Lakes in Le Fjord-du-Saguenay
Explore Lac Vert across LakeGrade
More Québec Lake Rankings
Other Grade D Lakes in Québec
Eutrophic Lakes in Québec
More records, surveys & data sources
Where this data comes from
Measurements for Lac Vert come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2025-08-01
Monitoring stations: