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LakeQuality

Lac LéGaré

Matawinie, QuébecView mapDirections

zone de transition oligo-mésotrophe

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

Clarity
4.7 m
Secchi · sampled 2025
Phosphorus
4.4 µg/L
Measured by MELCCFP
Chlorophyll-a
1.6 µg/L
Measured by MELCCFP
Max depth
~25.3 m est.
GLOBathy model
  • 83 ft max depth

Lac LéGaré in Matawinie, 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: 4.7 m visibility. Phosphorus: 4.4 µg/L. Chlorophyll-a (algae): 1.6 µg/L.

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Lac LéGaré is a lake in Matawinie County, Québec with an estimated average depth of about 83 feet.

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

What Lac LéGaré is good for

From access and monitoring records, not editorial picks.

  • Clear water15.4 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 Lac LéGaré 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 Lac LéGaré

These are the measurements MELCCFP publishes for Lac LéGaré, 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 15.4 ft down. Phosphorus 4.4 µg/L. Chlorophyll-a 1.6 µg/L.

MetricValueEPA condition class
Water Clarity (Secchi Depth)4.7 mMeasured, not scored
Phosphorus4.4 µg/LMeasured, not scored
Chlorophyll-a (Algae)1.6 µg/LMeasured, not scored

Lake Details

CharacteristicValue
Maximum Depth~25.3 m est.
Average Depth~12.2 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 LéGaré.

Lake Size & Watershed

Watershed (drainage) area
101 sq mi
Surface area
2,689 acres
Shoreline
34 mi
Elevation
1,424 ft

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.

Fishing Lac LéGaré

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Frequently asked questions about Lac LéGaré

Ask about Lac LéGaré

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

Where is Lac LéGaré?

Lac LéGaré is a lake in Matawinie, 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 Lac LéGaré?

Lac LéGaré in Matawinie, 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: 4.7 m visibility. Phosphorus: 4.4 µg/L. Chlorophyll-a (algae): 1.6 µg/L.

Is Lac LéGaré safe to swim in?

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

How deep is Lac LéGaré?

No published bathymetric survey covers Lac LéGaré, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 83 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.

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 LéGaré. 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 (10 classified 2016–2025)
YearPublished class
2024zone de transition oligo-mésotrophe
2023zone de transition oligo-mésotrophe
2022zone de transition oligo-mésotrophe
2021zone de transition oligo-mésotrophe
2020zone de transition oligo-mésotrophe
2019zone de transition oligo-mésotrophe
2018zone de transition oligo-mésotrophe
2017classe oligotrophe
2016classe 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 LéGaré 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)