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LakeQuality

Petit Lac Hughes

Pontiac, QuébecView mapDirections

zone de transition oligo-mésotrophe

This is MELCCFP's own trophic classification for 2025, not a LakeQuality grade. See every year

Clarity
6 m
Secchi · sampled 2025
Phosphorus
3.4 µg/L
Measured by MELCCFP
Chlorophyll-a
1 µg/L
Measured by MELCCFP

Petit Lac Hughes in Pontiac, 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: 6 m visibility. Phosphorus: 3.4 µg/L. Chlorophyll-a (algae): 1 µg/L.

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Petit Lac Hughes is a lake in Pontiac County, Québec.

Source: Québec RSVL (MELCCFP) — not the EPA Water Quality Portal, last sampled 2025-08-01. Grade methodology: LakeQuality methodology.

What Petit Lac Hughes is good for

From access and monitoring records, not editorial picks.

  • Clear water19.5 ft of visibility

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Petit Lac Hughes 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.

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Water quality measurements for Petit Lac Hughes

These are the measurements MELCCFP publishes for Petit Lac Hughes, 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 19.5 ft down. Phosphorus 3.4 µg/L. Chlorophyll-a 1 µg/L.

MetricValueEPA condition class
Water Clarity (Secchi Depth)5.95 mMeasured, not scored
Phosphorus3.4 µg/LMeasured, not scored
Chlorophyll-a (Algae)1 µg/LMeasured, not scored

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Frequently asked questions about Petit Lac Hughes

Ask about Petit Lac Hughes

Answers come straight from the public measurements and survey records on this page.

Where is Petit Lac Hughes?

Petit Lac Hughes is a lake in Pontiac, 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 Petit Lac Hughes?

Petit Lac Hughes in Pontiac, 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: 6 m visibility. Phosphorus: 3.4 µg/L. Chlorophyll-a (algae): 1 µg/L.

Is Petit Lac Hughes safe to swim in?

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

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 Hughes. It is shown here as theirs, in their words, and is not folded into the LakeQuality letter.

Most recent, 2025
zone de transition oligo-mésotrophe

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 (14 classified 2012–2025)
YearPublished class
2024zone de transition oligo-mésotrophe
2023zone de transition oligo-mésotrophe
2022zone de transition oligo-mésotrophe
2021classe oligotrophe
2020classe oligotrophe
2019classe ultra-oligotrophe
2018classe oligotrophe
2015classe oligotrophe
2014classe oligotrophe
2013zone de transition oligo-mésotrophe
2012classe 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 Petit Lac Hughes 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.