Lac Rouge
Matawinie, QuébecView mapDirections
This is MELCCFP's own trophic classification for 2025, not a LakeQuality grade. See every year
Lac Rouge in Matawinie, Québec is classified classe oligotrophe by Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (Québec) for 2025. Water clarity: 6.9 m visibility. Phosphorus: 4.2 µg/L. Chlorophyll-a (algae): 1.3 µg/L.
Stays via Stay22
Stays near Lac Rouge
Compare lakeside cabins, hotels, and vacation rentals near Lac Rouge 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 Rouge
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 Rouge’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Lac Rouge 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.
What Lac Rouge is good for
From access and monitoring records, not editorial picks.
- Clear water22.6 ft of visibility
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lac Rouge 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 Rouge
These are the measurements MELCCFP publishes for Lac Rouge, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Crystal clear, you can see 22.6 ft down. Phosphorus 4.2 µg/L. Chlorophyll-a 1.3 µg/L.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.9 m | Measured, not scored |
| Phosphorus | 4.2 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | 1.3 µg/L | Measured, not scored |
Fishing Lac Rouge
Nearby Lakes in Matawinie
Frequently asked questions about Lac Rouge
Ask about Lac Rouge
Answers come straight from the public measurements and survey records on this page.
Where is Lac Rouge?
- Lac Rouge is a lake in Matawinie, Québec. MELCCFP classifies it classe oligotrophe for 2025. This is MELCCFP's own trophic classification for 2025, not a LakeQuality grade.
What is the water quality of Lac Rouge?
- Lac Rouge in Matawinie, Québec is classified classe oligotrophe by Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (Québec) for 2025. Water clarity: 6.9 m visibility. Phosphorus: 4.2 µg/L. Chlorophyll-a (algae): 1.3 µg/L.
Is Lac Rouge safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Lac Rouge 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 Rouge. 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 (18 classified 2014–2025)
| Year | Published class |
|---|---|
| 2024 | classe oligotrophe |
| 2023 | classe oligotrophe |
| 2022 | classe oligotrophe |
| 2021 | classe oligotrophe |
| 2020 | classe oligotrophe |
| 2019 | classe oligotrophe |
| 2018 | classe ultra-oligotrophe |
| 2017 | classe oligotrophe |
| 2016 | classe oligotrophe |
| 2015 | classe oligotrophe |
| 2014 | classe oligotrophe |
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 Rouge 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.