Petit Lac Long
Maskinongé, QuébecView mapDirections
This is MELCCFP's own trophic classification for 2025, not a LakeQuality grade. See every year
Petit Lac Long in Maskinongé, 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: 5.9 m visibility. Phosphorus: 4.2 µg/L. Chlorophyll-a (algae): 1.2 µg/L.
Stays via Stay22
Stays near Petit Lac Long
Compare lakeside cabins, hotels, and vacation rentals near Petit Lac Long in Maskinongé, 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 Petit Lac Long
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 Petit Lac Long’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Petit Lac Long is a lake in Maskinongé County, Québec.
Source: Québec RSVL (MELCCFP) — not the EPA Water Quality Portal, last sampled 2025-08-01. Grade methodology: LakeQuality methodology.
What Petit Lac Long is good for
From access and monitoring records, not editorial picks.
- Clear water19.2 ft of visibility
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Petit Lac Long 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 Petit Lac Long
These are the measurements MELCCFP publishes for Petit Lac Long, 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 19.2 ft down. Phosphorus 4.2 µg/L. Chlorophyll-a 1.2 µg/L.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.85 m | Measured, not scored |
| Phosphorus | 4.2 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | 1.2 µg/L | Measured, not scored |
Fishing Petit Lac Long
Nearby Lakes in Maskinongé
Frequently asked questions about Petit Lac Long
Ask about Petit Lac Long
Answers come straight from the public measurements and survey records on this page.
Where is Petit Lac Long?
- Petit Lac Long is a lake in Maskinongé, 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 Petit Lac Long?
- Petit Lac Long in Maskinongé, 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: 5.9 m visibility. Phosphorus: 4.2 µg/L. Chlorophyll-a (algae): 1.2 µg/L.
Is Petit Lac Long safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Petit Lac Long 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 Petit Lac Long. 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 | zone de transition oligo-mésotrophe |
| 2023 | zone de transition oligo-mésotrophe |
| 2022 | zone de transition oligo-mésotrophe |
| 2021 | zone de transition oligo-mésotrophe |
| 2020 | classe oligotrophe |
| 2019 | zone de transition oligo-mésotrophe |
| 2018 | zone de transition oligo-mésotrophe |
| 2017 | zone de transition oligo-mésotrophe |
| 2016 | classe oligotrophe |
| 2015 | zone de transition oligo-mésotrophe |
| 2014 | 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 Petit Lac Long 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.