La Vallée-de-la-Gatineau County, Québec · Water Quality Report Card
Lac DéSormeaux
Lac DéSormeaux in La Vallée-de-la-Gatineau, Québec received a water quality grade of B (Good). Water clarity: 2.3 m visibility. Phosphorus: 13.3 µg/L. Chlorophyll-a (algae): 6.5 µg/L.
- Clarity
- 2.3 m
- Type
- Mesotrophic
Lac DéSormeaux is a mesotrophic lake in La Vallée-de-la-Gatineau County, Québec. Water quality is graded B based on 3 sampling years through 2024. Compared to the 35 other monitored lakes in La Vallée-de-la-Gatineau County, Lac DéSormeaux ranks #36 for water quality.
Source: EPA Water Quality Portal sampling records, MELCCFP, last sampled 2024-08-01. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Moderate clarity, visible to about 7.5 ft. Phosphorus level: 13.3 µg/L. Chlorophyll-a: 6.5 µg/L. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.3 m | C |
| Phosphorus | 13.3 µg/L | A |
| Chlorophyll-a (Algae) | 6.5 µg/L | B |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
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Fishing Lac DéSormeaux
Location
County Ranking
Ranked #36 of 36 lakes in La Vallée-de-la-Gatineau
Cleaner Lakes Within 30 Miles
Lac DéSormeaux holds Grade B. 5 nearby lakes hold higher grades.
- ALac HeneyLa Vallée-de-la-Gatineau · 1.1 mi · Higher grade (B → A)
- ALac PemichanganLa Vallée-de-la-Gatineau · 3.7 mi · Higher grade (B → A)
- ALac NorthfieldLa Vallée-de-la-Gatineau · 5.5 mi · Higher grade (B → A)
- ALac PaquinLa Vallée-de-la-Gatineau · 8.4 mi · Higher grade (B → A)
- ALac du Castor BlancLa Vallée-de-la-Gatineau · 8.8 mi · Higher grade (B → A)
Nearby Lakes in La Vallée-de-la-Gatineau
Explore Lac DéSormeaux across LakeGrade
More Québec Lake Rankings
Other Grade B Lakes in Québec
Mesotrophic Lakes in Québec
More records, surveys & data sources
Where this data comes from
Measurements for Lac DéSormeaux 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: 2024-08-01
Monitoring stations: