Les Laurentides County, Québec · Water Quality Report Card
Lac de la Blanche
Lac de la Blanche in Les Laurentides, Québec received a water quality grade of A (Excellent). Water clarity: 6.2 m visibility.
- Clarity
- 6.2 m
- Type
- Oligotrophic
Lac de la Blanche is a cold, clear oligotrophic lake in Les Laurentides County, Québec. Water quality is graded A based on 1 sampling years through 2025. Compared to the 118 other monitored lakes in Les Laurentides County, Lac de la Blanche ranks #59 for water quality.
Source: EPA Water Quality Portal sampling records, MELCCFP, last sampled 2025-08-01. Grade methodology: LakeGrade methodology.
Watch Lac de la Blanche water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 20.3 ft down. Trophic State Index: 34.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.2 m | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 34 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Lac de la Blanche
Compare lakeside cabins, hotels, and vacation rentals near Lac de la Blanche in Les Laurentides, 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 de la Blanche
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 de la Blanche?
Get lake water-quality report cards plus the best cabin & lodging deals near Lac de la Blanche — straight to your inbox. No spam, unsubscribe anytime.
Fishing Lac de la Blanche
Location
County Ranking
Ranked #59 of 119 lakes in Les Laurentides
Nearby Lakes in Les Laurentides
Explore Lac de la Blanche across LakeGrade
More Québec Lake Rankings
Other Grade A Lakes in Québec
Oligotrophic Lakes in Québec
More records, surveys & data sources
Where this data comes from
Measurements for Lac de la Blanche 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: