Matawinie County, Québec · Water Quality Report Card
Lac Delisle
Lac Delisle in Matawinie, Québec received a water quality grade of B (Good). Water clarity: 4 m visibility.
- Clarity
- 4 m
- Type
- Mesotrophic
Lac Delisle is a mesotrophic lake in Matawinie County, Québec. Water quality is graded B based on 1 sampling years through 2025. Compared to the 111 other monitored lakes in Matawinie County, Lac Delisle ranks #101 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
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 13.1 ft. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4 m | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
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Fishing Lac Delisle
Location
County Ranking
Ranked #101 of 112 lakes in Matawinie
Cleaner Lakes Within 30 Miles
Lac Delisle holds Grade B. 5 nearby lakes hold higher grades.
Nearby Lakes in Matawinie
Explore Lac Delisle 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 Delisle 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: