Argenteuil County, Québec · Water Quality Report Card
Lac Graham
Lac Graham in Argenteuil, Québec received a water quality grade of B (Good). Water clarity: 1.4 m visibility. Phosphorus: 17.2 µg/L. Chlorophyll-a (algae): 8.8 µg/L.
- Clarity
- 1.4 m
- Type
- Eutrophic
Lac Graham is a productive, nutrient-rich eutrophic 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 Graham ranks #46 for water quality.
Source: EPA Water Quality Portal sampling records, MELCCFP, last sampled 2025-08-01. Grade methodology: LakeGrade methodology.
Watch Lac Graham water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Murky, only visible to about 4.6 ft. Phosphorus level: 17.2 µg/L. Chlorophyll-a: 8.8 µg/L. Trophic State Index: 51.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.4 m | D |
| Phosphorus | 17.2 µg/L | A |
| Chlorophyll-a (Algae) | 8.8 µg/L | B |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lac Graham
Compare lakeside cabins, hotels, and vacation rentals near Lac Graham in Argenteuil, Québec — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Lac Graham
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Lac Graham?
Get lake water-quality report cards plus the best cabin & lodging deals near Lac Graham — straight to your inbox. No spam, unsubscribe anytime.
Fishing Lac Graham
Location
County Ranking
Ranked #46 of 48 lakes in Argenteuil
Cleaner Lakes Within 30 Miles
Lac Graham holds Grade B. 5 nearby lakes hold higher grades.
- APetit Lac RainbowArgenteuil · 1.5 mi · Higher grade (B → A)
- ALac RainbowArgenteuil · 1.6 mi · Higher grade (B → A)
- BLac McdougallArgenteuil · 1.1 mi · Higher overall water quality score
- BLac BixleyArgenteuil · 1.7 mi · Higher overall water quality score
- BLac RenoirArgenteuil · 2 mi · Higher overall water quality score
Nearby Lakes in Argenteuil
Explore Lac Graham across LakeGrade
More Québec Lake Rankings
Other Grade B Lakes in Québec
Eutrophic Lakes in Québec
More records, surveys & data sources
Where this data comes from
Measurements for Lac Graham 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: