Abitibi-Témiscamingue County, Québec · Water Quality Report Card
Lac Matissard
Lac Matissard in Abitibi-Témiscamingue, Québec received a water quality grade of C (Fair). Water clarity: 1 m visibility. Phosphorus: 24.5 µg/L. Chlorophyll-a (algae): 5 µg/L.
- Clarity
- 1 m
- Type
- Eutrophic
Lac Matissard is a productive, nutrient-rich eutrophic lake in Abitibi-Témiscamingue County, Québec. Water quality is graded C based on 3 sampling years through 2025. Compared to the 18 other monitored lakes in Abitibi-Témiscamingue County, Lac Matissard ranks #16 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
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Very murky, less than 3.3 ft of visibility. Phosphorus level: 24.5 µg/L. Chlorophyll-a: 5 µg/L. Trophic State Index: 52.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1 m | F |
| Phosphorus | 24.5 µg/L | B |
| Chlorophyll-a (Algae) | 5 µg/L | B |
| Trophic State Index (TSI) | 52 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lac Matissard
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Fishing Lac Matissard
Location
County Ranking
Ranked #16 of 19 lakes in Abitibi-Témiscamingue
Cleaner Lakes Within 30 Miles
Lac Matissard holds Grade C. 5 nearby lakes hold higher grades.
- ALac DufaultAbitibi-Témiscamingue · 16.2 mi · Two grade letters higher (C → A)
- BLac JoannèSAbitibi-Témiscamingue · 16.1 mi · Higher grade (C → B)
- BLac PreissacAbitibi · 16.8 mi · Higher grade (C → B)
- BLac D'AlembertAbitibi-Témiscamingue · 15.3 mi · Higher grade (C → B)
- CPetit Lac DufresnoyAbitibi-Témiscamingue · 12.9 mi · Higher overall water quality score
Nearby Lakes in Abitibi-Témiscamingue
Explore Lac Matissard 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 Matissard 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: