Matawinie County, Québec · Water Quality Report Card
Lac Arbour
Lac Arbour in Matawinie, Québec received a water quality grade of C (Fair). Water clarity: 1.3 m visibility. Phosphorus: 28.1 µg/L. Chlorophyll-a (algae): 7.4 µg/L.
- Clarity
- 1.3 m
- Type
- Eutrophic
Lac Arbour is a productive, nutrient-rich eutrophic lake in Matawinie County, Québec. Water quality is graded C based on 3 sampling years through 2025. Compared to the 111 other monitored lakes in Matawinie County, Lac Arbour ranks #108 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
Murky, only visible to about 4.3 ft. Phosphorus level: 28.1 µg/L. Chlorophyll-a: 7.4 µg/L. Trophic State Index: 53.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.3 m | D |
| Phosphorus | 28.1 µg/L | B |
| Chlorophyll-a (Algae) | 7.4 µg/L | B |
| Trophic State Index (TSI) | 53 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Lac Arbour
Location
County Ranking
Ranked #108 of 112 lakes in Matawinie
Cleaner Lakes Within 30 Miles
Lac Arbour holds Grade C. 5 nearby lakes hold higher grades.
- ALac PierreMatawinie · 0.7 mi · Two grade letters higher (C → A)
- ALac RougeMatawinie · 1.2 mi · Two grade letters higher (C → A)
- ALac CloutierMatawinie · 1.7 mi · Two grade letters higher (C → A)
- ALac StevensMatawinie · 1.8 mi · Two grade letters higher (C → A)
- ALac PatrickMatawinie · 1.8 mi · Two grade letters higher (C → A)
Nearby Lakes in Matawinie
Explore Lac Arbour 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 Arbour 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: