Lac Creux
D'Autray, QuébecView mapDirections
This is MELCCFP's own trophic classification for 2025, not a LakeQuality grade. See every year
Lac Creux in D'Autray, 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: 9.4 m visibility. Phosphorus: 3.3 µg/L. Chlorophyll-a (algae): 1.1 µg/L.
Lac Creux is a lake in D'Autray County, Québec.
Source: Québec RSVL (MELCCFP) — not the EPA Water Quality Portal, last sampled 2025-08-01. Methodology: how these readings are compared.
What Lac Creux is good for
From access and monitoring records, not editorial picks.
- Clear water30.8 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 Creux 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 Creux
These are the measurements MELCCFP publishes for Lac Creux, 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 30.8 ft down. Phosphorus 3.3 µg/L. Chlorophyll-a 1.1 µg/L.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 9.4m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 3.3µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 1.1µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
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Frequently asked questions about Lac Creux
Where is Lac Creux?
- Lac Creux is a lake in D'Autray, 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 Creux?
- Lac Creux in D'Autray, 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: 9.4 m visibility. Phosphorus: 3.3 µg/L. Chlorophyll-a (algae): 1.1 µg/L.
Is Lac Creux safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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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 Creux. 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 (12 classified 2014–2025)
| Year | Published class |
|---|---|
| 2024 | classe oligotrophe |
| 2023 | classe oligotrophe |
| 2022 | classe ultra-oligotrophe |
| 2021 | classe oligotrophe |
| 2020 | classe oligotrophe |
| 2019 | classe oligotrophe |
| 2018 | classe oligotrophe |
| 2017 | classe oligotrophe |
| 2016 | classe oligotrophe |
| 2015 | classe ultra-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 Creux 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.