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LakeQuality

Lac Brome

Brome-Missisquoi, QuébecView mapDirections

classe mésotrophe

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

Clarity
3.1 m
Secchi · sampled 2025
Phosphorus
14 µg/L
Measured by MELCCFP
Chlorophyll-a
8 µg/L
Measured by MELCCFP
Max depth
~16.5 m est.
GLOBathy model
  • 54 ft max depth

Lac Brome in Brome-Missisquoi, 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 2025. Water clarity: 3.1 m visibility. Phosphorus: 14 µg/L. Chlorophyll-a (algae): 8 µg/L.

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Lac Brome is a lake in Brome-Missisquoi County, Québec with an estimated average depth of about 54 feet.

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

What Lac Brome is good for

From access and monitoring records, not editorial picks.

  • Clear water10 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 Brome 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 Brome

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

Good clarity, visible to about 10 ft. Phosphorus 14 µg/L. Chlorophyll-a 8 µg/L.

MetricValueEPA condition class
Water Clarity (Secchi Depth)3.05 mMeasured, not scored
Phosphorus14 µg/LMeasured, not scored
Chlorophyll-a (Algae)8 µg/LMeasured, not scored

Lake Details

CharacteristicValue
Maximum Depth~16.5 m est.
Average Depth~6.4 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 Brome.

Lake Size & Watershed

Watershed (drainage) area
72 sq mi
Surface area
3,628 acres
Shoreline
19.7 mi
Elevation
636 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 Brome

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Frequently asked questions about Lac Brome

Ask about Lac Brome

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

Where is Lac Brome?

Lac Brome is a lake in Brome-Missisquoi, Québec. MELCCFP classifies it classe mésotrophe for 2025. This is MELCCFP's own trophic classification for 2025, not a LakeQuality grade.

What is the water quality of Lac Brome?

Lac Brome in Brome-Missisquoi, 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 2025. Water clarity: 3.1 m visibility. Phosphorus: 14 µg/L. Chlorophyll-a (algae): 8 µg/L.

Is Lac Brome safe to swim in?

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

How deep is Lac Brome?

No published bathymetric survey covers Lac Brome, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 54 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 Brome. It is shown here as theirs, in their words, and is not folded into the LakeQuality letter.

Most recent, 2025
classe 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 (18 classified 2014–2025)
YearPublished class
2024classe mésotrophe
2023classe mésotrophe
2022classe mésotrophe
2021zone de transition méso-eutrophe
2020classe mésotrophe
2019zone de transition méso-eutrophe
2018classe mésotrophe
2017classe mésotrophe
2016classe mésotrophe
2015classe mésotrophe
2014zone de transition méso-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 Brome 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)