Le Val-Saint-François County, Québec · Water Quality Report Card
Lac Denison
Lac Denison in Le Val-Saint-François, Québec received a water quality grade of C (Fair). Water clarity: 1.6 m visibility. Phosphorus: 24.7 µg/L. Chlorophyll-a (algae): 5.8 µg/L.
- Clarity
- 1.6 m
- Type
- Eutrophic
Lac Denison is a productive, nutrient-rich eutrophic lake in Le Val-Saint-François County, Québec. Water quality is graded C based on 3 sampling years through 2010. Compared to the 9 other monitored lakes in Le Val-Saint-François County, Lac Denison ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, MELCCFP, last sampled 2010-08-01. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 5.2 ft. Phosphorus level: 24.7 µg/L. Chlorophyll-a: 5.8 µg/L. Trophic State Index: 50.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.6 m | D |
| Phosphorus | 24.7 µg/L | B |
| Chlorophyll-a (Algae) | 5.8 µg/L | B |
| Trophic State Index (TSI) | 50 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Lac Denison
Location
County Ranking
Ranked #9 of 10 lakes in Le Val-Saint-François
Cleaner Lakes Within 30 Miles
Lac Denison holds Grade C. 5 nearby lakes hold higher grades.
- APetit Lac BromptonLe Val-Saint-François · 20.2 mi · Two grade letters higher (C → A)
- BLac MillerLe Val-Saint-François · 18 mi · Higher grade (C → B)
- BLac DesmaraisLe Val-Saint-François · 19.9 mi · Higher grade (C → B)
- BSpooner PondLe Val-Saint-François · 2 mi · Higher grade (C → B)
- BLac BoissonneaultLe Val-Saint-François · 13.2 mi · Higher grade (C → B)
Nearby Lakes in Le Val-Saint-François
Explore Lac Denison across LakeGrade
More Québec Lake Rankings
Other Grade C Lakes in Québec
Eutrophic Lakes in Québec
More records, surveys & data sources
Where this data comes from
Measurements for Lac Denison 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: 2010-08-01
Monitoring stations: