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LakeQuality

Lac Hervé

Abitibi-Témiscamingue, QuébecView mapDirections

classe hyper-eutrophe

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

Clarity
0.5 m
Secchi · sampled 2025
Phosphorus
45 µg/L
Measured by MELCCFP
Chlorophyll-a
9.9 µg/L
Measured by MELCCFP
Max depth
~18 m est.
GLOBathy model
  • 59 ft max depth

Lac Hervé in Abitibi-Témiscamingue, Québec is classified classe hyper-eutrophe by Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (Québec) for 2025. Water clarity: 0.5 m visibility. Phosphorus: 45 µg/L. Chlorophyll-a (algae): 9.9 µg/L.

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Lac Hervé is a lake in Abitibi-Témiscamingue County, Québec with an estimated average depth of about 59 feet.

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

Swimming conditions

No reading

Not rated

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

Whether Lac Hervé 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 Hervé

These are the measurements MELCCFP publishes for Lac Hervé, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

Very murky, less than 1.6 ft of visibility. Phosphorus 45 µg/L. Chlorophyll-a 9.9 µg/L.

MetricValueEPA condition class
Water Clarity (Secchi Depth)0.5 mMeasured, not scored
Phosphorus45 µg/LMeasured, not scored
Chlorophyll-a (Algae)9.9 µg/LMeasured, not scored

Lake Details

CharacteristicValue
Maximum Depth~18 m est.
Average Depth~4.3 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 Hervé.

Lake Size & Watershed

Watershed (drainage) area
3 sq mi
Surface area
255 acres
Shoreline
3.9 mi
Elevation
906 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 Hervé

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Frequently asked questions about Lac Hervé

Ask about Lac Hervé

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

Where is Lac Hervé?

Lac Hervé is a lake in Abitibi-Témiscamingue, Québec. MELCCFP classifies it classe hyper-eutrophe for 2025. This is MELCCFP's own trophic classification for 2025, not a LakeQuality grade.

What is the water quality of Lac Hervé?

Lac Hervé in Abitibi-Témiscamingue, Québec is classified classe hyper-eutrophe by Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (Québec) for 2025. Water clarity: 0.5 m visibility. Phosphorus: 45 µg/L. Chlorophyll-a (algae): 9.9 µg/L.

Is Lac Hervé safe to swim in?

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

How deep is Lac Hervé?

No published bathymetric survey covers Lac Hervé, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 59 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 Hervé. It is shown here as theirs, in their words, and is not folded into the LakeQuality letter.

Most recent, 2025
classe hyper-eutrophe

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
2024classe eutrophe
2023classe hyper-eutrophe
2022classe hyper-eutrophe
2021classe hyper-eutrophe
2020classe hyper-eutrophe
2019classe hyper-eutrophe
2018classe hyper-eutrophe
2017classe hyper-eutrophe
2016classe eutrophe

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 Hervé 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)