Lac Lasalle
Matawinie, QuébecView mapDirections
This is MELCCFP's own trophic classification for 2025, not a LakeQuality grade. See every year
Lac Lasalle in Matawinie, Québec is classified zone de transition oligo-mésotrophe by Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (Québec) for 2025. Water clarity: 2 m visibility. Phosphorus: 9.6 µg/L. Chlorophyll-a (algae): 2.6 µg/L.
Stays via Stay22
Stays near Lac Lasalle
Compare lakeside cabins, hotels, and vacation rentals near Lac Lasalle in Matawinie, 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 Lasalle
Prices for Sep 18–20, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Follow Lac Lasalle’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Lac Lasalle is a lake in Matawinie County, Québec.
Source: Québec RSVL (MELCCFP) — not the EPA Water Quality Portal, last sampled 2025-08-01. Grade methodology: LakeQuality methodology.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lac Lasalle is safe to swim in today is a call for le Ministère de l'Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lac Lasalle
These are the measurements MELCCFP publishes for Lac Lasalle, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 6.6 ft. Phosphorus 9.6 µg/L. Chlorophyll-a 2.6 µg/L.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 m | Measured, not scored |
| Phosphorus | 9.6 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | 2.6 µg/L | Measured, not scored |
Fishing Lac Lasalle
Nearby Lakes in Matawinie
Frequently asked questions about Lac Lasalle
Ask about Lac Lasalle
Answers come straight from the public measurements and survey records on this page.
Where is Lac Lasalle?
- Lac Lasalle is a lake in Matawinie, Québec. MELCCFP classifies it zone de transition oligo-mésotrophe for 2025. This is MELCCFP's own trophic classification for 2025, not a LakeQuality grade.
What is the water quality of Lac Lasalle?
- Lac Lasalle in Matawinie, Québec is classified zone de transition oligo-mésotrophe by Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (Québec) for 2025. Water clarity: 2 m visibility. Phosphorus: 9.6 µg/L. Chlorophyll-a (algae): 2.6 µg/L.
Is Lac Lasalle safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Lac Lasalle across LakeQuality
More lakes in Québec
Other Lakes in Québec
The authority’s own classification
Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (Québec) publishes its own classification for Lac Lasalle. It is shown here as theirs, in their words, and is not folded into the LakeQuality letter.
This is MELCCFP's own trophic classification for 2025, not a LakeQuality grade.
A trophic class ranks how nutrient-rich a lake is, from oligotrophic at the low end to eutrophic at the high end. It describes nutrients and plant growth, not bacteria, and it is not a swimming clearance.
Earlier years (10 classified 2008–2025)
| Year | Published class |
|---|---|
| 2024 | zone de transition oligo-mésotrophe |
| 2021 | classe mésotrophe |
| 2018 | zone de transition méso-eutrophe |
| 2017 | classe eutrophe |
| 2015 | classe mésotrophe |
| 2014 | zone de transition oligo-mésotrophe |
| 2013 | zone de transition oligo-mésotrophe |
| 2009 | classe eutrophe |
| 2008 | zone de transition oligo-mésotrophe |
Published by Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (Québec). A classification is not a same-day swimming clearance. See data sources.
Where this data comes from
Measurements for Lac Lasalle come from the Réseau de surveillance volontaire des lacs (RSVL), not the EPA Water Quality Portal. Per-sample source details are not recorded for this lake. MELCCFP RSVL (CC BY 4.0). See data sources.