Abitibi-Témiscamingue County, Québec · Water Quality Report Card
Lac D'Alembert
Lac D'Alembert in Abitibi-Témiscamingue, Québec received a water quality grade of B (Good). Water clarity: 1.4 m visibility. Phosphorus: 14.2 µg/L. Chlorophyll-a (algae): 5.6 µg/L.
- Clarity
- 1.4 m
- Type
- Mesotrophic
Lac D'Alembert is a mesotrophic lake in Abitibi-Témiscamingue County, Québec. Water quality is graded B based on 3 sampling years through 2025. Compared to the 18 other monitored lakes in Abitibi-Témiscamingue County, Lac D'Alembert ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, MELCCFP, last sampled 2025-08-01. Grade methodology: LakeGrade methodology.
Watch Lac D'Alembert 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 4.4 ft. Phosphorus level: 14.2 µg/L. Chlorophyll-a: 5.6 µg/L. Trophic State Index: 49.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.35 m | D |
| Phosphorus | 14.2 µg/L | A |
| Chlorophyll-a (Algae) | 5.6 µg/L | B |
| Trophic State Index (TSI) | 49 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Lac D'Alembert
Compare lakeside cabins, hotels, and vacation rentals near Lac D'Alembert in Abitibi-Témiscamingue, 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 D'Alembert
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 D'Alembert?
Get lake water-quality report cards plus the best cabin & lodging deals near Lac D'Alembert — straight to your inbox. No spam, unsubscribe anytime.
Fishing Lac D'Alembert
Location
County Ranking
Ranked #9 of 19 lakes in Abitibi-Témiscamingue
Cleaner Lakes Within 30 Miles
Lac D'Alembert holds Grade B. 2 nearby lakes hold higher grades.
- ALac DufaultAbitibi-Témiscamingue · 5.8 mi · Higher grade (B → A)
- ALac OsiskoAbitibi-Témiscamingue · 10.2 mi · Higher grade (B → A)
Nearby Lakes in Abitibi-Témiscamingue
Explore Lac D'Alembert 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 D'Alembert 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: