Lac Grenier
Les Pays-d'en-Haut, QuébecView mapDirections
This is MELCCFP's own trophic classification for 2024, not a LakeQuality grade. See every year
- 39 ft max depth
Lac Grenier in Les Pays-d'en-Haut, Québec is classified classe mésotrophe by Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (Québec) for 2024. Water clarity: 2.1 m visibility. Phosphorus: 9.1 µg/L. Chlorophyll-a (algae): 5.6 µg/L.
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Lac Grenier is a lake in Les Pays-d'en-Haut County, Québec with an estimated average depth of about 39 feet.
Source: Québec RSVL (MELCCFP) — not the EPA Water Quality Portal, last sampled 2024-08-01. 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 Grenier 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 Grenier
These are the measurements MELCCFP publishes for Lac Grenier, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 6.9 ft. Phosphorus 9.1 µg/L. Chlorophyll-a 5.6 µg/L.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.1 m | Measured, not scored |
| Phosphorus | 9.1 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | 5.6 µg/L | Measured, not scored |
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~11.9 m est. |
| Average Depth | ~5.2 m est. |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Québec has not published bathymetry for Lac Grenier.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
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Frequently asked questions about Lac Grenier
Ask about Lac Grenier
Answers come straight from the public measurements and survey records on this page.
Where is Lac Grenier?
- Lac Grenier is a lake in Les Pays-d'en-Haut, Québec. MELCCFP classifies it classe mésotrophe for 2024. This is MELCCFP's own trophic classification for 2024, not a LakeQuality grade.
What is the water quality of Lac Grenier?
- Lac Grenier in Les Pays-d'en-Haut, Québec is classified classe mésotrophe by Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (Québec) for 2024. Water clarity: 2.1 m visibility. Phosphorus: 9.1 µg/L. Chlorophyll-a (algae): 5.6 µg/L.
Is Lac Grenier safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Lac Grenier?
- No published bathymetric survey covers Lac Grenier, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 39 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
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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 Grenier. 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 2024, 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 (4 classified 2009–2024)
| Year | Published class |
|---|---|
| 2023 | zone de transition oligo-mésotrophe |
| 2011 | zone de transition oligo-mésotrophe |
| 2009 | 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 Grenier 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.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)