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LakeQuality

Lac Iroquois

Papineau, QuébecView mapDirections

zone de transition oligo-mésotrophe

This is MELCCFP's own trophic classification for 2023, not a LakeQuality grade. See every year

Clarity
3.4 m
Secchi · sampled 2023
Phosphorus
4 µg/L
Measured by MELCCFP
Chlorophyll-a
1.9 µg/L
Measured by MELCCFP
Max depth
~16.2 m est.
GLOBathy model
  • 53 ft max depth

Lac Iroquois in Papineau, 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 2023. Water clarity: 3.4 m visibility. Phosphorus: 4 µg/L. Chlorophyll-a (algae): 1.9 µg/L.

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Lac Iroquois is a lake in Papineau County, Québec with an estimated average depth of about 53 feet.

Source: Québec RSVL (MELCCFP) — not the EPA Water Quality Portal, last sampled 2023-08-01. Grade methodology: LakeQuality methodology.

What Lac Iroquois is good for

From access and monitoring records, not editorial picks.

  • Clear water11.2 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 Iroquois 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 Iroquois

These are the measurements MELCCFP publishes for Lac Iroquois, 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 11.2 ft. Phosphorus 4 µg/L. Chlorophyll-a 1.9 µg/L.

MetricValueEPA condition class
Water Clarity (Secchi Depth)3.4 mMeasured, not scored
Phosphorus4 µg/LMeasured, not scored
Chlorophyll-a (Algae)1.9 µg/LMeasured, not scored

Lake Details

CharacteristicValue
Maximum Depth~16.2 m est.
Average Depth~10.1 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 Iroquois.

Lake Size & Watershed

Watershed (drainage) area
3 sq mi
Surface area
351 acres
Shoreline
5.5 mi
Elevation
837 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 Iroquois

Nearby Lakes in Papineau

Frequently asked questions about Lac Iroquois

Ask about Lac Iroquois

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

Where is Lac Iroquois?

Lac Iroquois is a lake in Papineau, Québec. MELCCFP classifies it zone de transition oligo-mésotrophe for 2023. This is MELCCFP's own trophic classification for 2023, not a LakeQuality grade.

What is the water quality of Lac Iroquois?

Lac Iroquois in Papineau, 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 2023. Water clarity: 3.4 m visibility. Phosphorus: 4 µg/L. Chlorophyll-a (algae): 1.9 µg/L.

Is Lac Iroquois safe to swim in?

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

How deep is Lac Iroquois?

No published bathymetric survey covers Lac Iroquois, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 53 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 Iroquois. It is shown here as theirs, in their words, and is not folded into the LakeQuality letter.

Most recent, 2023
zone de transition oligo-mésotrophe

This is MELCCFP's own trophic classification for 2023, 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 (9 classified 2008–2023)
YearPublished class
2022classe mésotrophe
2021classe oligotrophe
2020classe oligotrophe
2019classe oligotrophe
2013classe oligotrophe
2011classe mésotrophe
2009classe oligotrophe
2008classe 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 Iroquois 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)