Argenteuil County, Québec · Water Quality Report Card
Lac Ivan
Lac Ivan in Argenteuil, Québec received a water quality grade of B (Good). Water clarity: 2 m visibility. Phosphorus: 15.1 µg/L. Chlorophyll-a (algae): 5 µg/L.
- Clarity
- 2 m
- Type
- Mesotrophic
Lac Ivan is a mesotrophic lake in Argenteuil County, Québec. Water quality is graded B based on 3 sampling years through 2025. Compared to the 47 other monitored lakes in Argenteuil County, Lac Ivan ranks #42 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
Murky, only visible to about 6.6 ft. Phosphorus level: 15.1 µg/L. Chlorophyll-a: 5 µg/L. Trophic State Index: 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 m | D |
| Phosphorus | 15.1 µg/L | A |
| Chlorophyll-a (Algae) | 5 µg/L | A |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
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Fishing Lac Ivan
Location
County Ranking
Ranked #42 of 48 lakes in Argenteuil
Cleaner Lakes Within 30 Miles
Lac Ivan holds Grade B. 5 nearby lakes hold higher grades.
- ALac des Becs-ScieLes Pays-d'en-Haut · 1.3 mi · Higher grade (B → A)
- ALac HughesArgenteuil · 2.2 mi · Higher grade (B → A)
- BLac TamaracoutaArgenteuil · 1 mi · Higher overall water quality score
- BLac des ChatsLes Pays-d'en-Haut · 1.6 mi · Higher overall water quality score
- BLac KanawanaLes Pays-d'en-Haut · 1.8 mi · Higher overall water quality score
Nearby Lakes in Argenteuil
Explore Lac Ivan 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 Ivan 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: